{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-4176", "tracking": { "current_release_date": "2026-04-02T12:20:16.568062Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-4176", "initial_release_date": "2026-03-29T21:24:37.914465Z", "revision_history": [ { "date": "2026-03-29T21:24:37.914465Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| References created (6)." }, { "date": "2026-03-29T21:24:44.187924Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-29T21:38:51.640959Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| Products created (3).| References created (6).| CWES updated (1)." }, { "date": "2026-03-29T21:38:57.710804Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-30T05:38:49.523229Z", "number": "5", "summary": "References created (1)." }, { "date": "2026-03-30T12:07:48.195919Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Products created (3).| References created (3)." }, { "date": "2026-03-30T12:07:54.916875Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-03-30T14:13:59.407421Z", "number": "8", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-30T16:25:03.632283Z", "number": "9", "summary": "CVSS created.| References created (1)." }, { "date": "2026-03-30T16:25:08.383680Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-03-30T16:39:04.847931Z", "number": "11", "summary": "CVSS created.| Unknown change." }, { "date": "2026-03-30T16:39:07.219514Z", "number": "12", "summary": "NCSC Score updated." }, { "date": "2026-03-31T00:27:36.810118Z", "number": "13", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (12).| Product Identifiers created (6).| Product Remediations created (12).| References created (8).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-03-31T00:27:47.066545Z", "number": "14", "summary": "NCSC Score updated." }, { "date": "2026-04-01T07:28:45.515733Z", "number": "15", "summary": "NCSC Score updated." }, { "date": "2026-04-01T12:21:53.540673Z", "number": "16", "summary": "Source connected.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (2).| CWES updated (1)." }, { "date": "2026-04-01T12:21:56.916641Z", "number": "17", "summary": "NCSC Score updated." }, { "date": "2026-04-02T12:19:55.273124Z", "number": "18", "summary": "CVSS updated.| Products connected (38)." }, { "date": "2026-04-02T12:20:12.623135Z", "number": "19", "summary": "NCSC Score updated." } ], "status": "interim", "version": "19" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<5.40.4-rc1", "product": { "name": "vers:unknown/<5.40.4-rc1", "product_id": "CSAFPID-5963602" } }, { "category": "product_version_range", "name": "vers:unknown/<5.42.2-rc1", "product": { "name": "vers:unknown/<5.42.2-rc1", "product_id": "CSAFPID-5963600" } }, { "category": "product_version_range", "name": "vers:unknown/<5.43.9", "product": { "name": "vers:unknown/<5.43.9", "product_id": "CSAFPID-5963601" } } ], "category": 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Azure Linux 3.0" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/*", "product": { "name": "vers:microsoft/*", "product_id": "CSAFPID-5238784", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:azl3_qtbase_6.6.3-4:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "azl3 qtbase 6.6.3-4 on Azure Linux 3.0" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/*", "product": { "name": "vers:microsoft/*", "product_id": "CSAFPID-5775821", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:azl3_sudo_1.9.17-1:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "azl3 sudo 1.9.17-1 on Azure Linux 3.0" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/*", "product": { "name": "vers:microsoft/*", "product_id": "CSAFPID-5687136", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:azl3_tcl_8.6.13-3:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "azl3 tcl 8.6.13-3 on Azure Linux 3.0" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/*", "product": { "name": "vers:microsoft/*", "product_id": "CSAFPID-5687132", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:cbl2_grpc_1.42.0-11:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "cbl2 grpc 1.42.0-11 on CBL Mariner 2.0" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/*", "product": { "name": "vers:microsoft/*", "product_id": "CSAFPID-5687146", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:cbl2_tcl_8.6.13-3:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "cbl2 tcl 8.6.13-3 on CBL Mariner 2.0" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/*", "product": { "name": "vers:microsoft/*", "product_id": "CSAFPID-5687147", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:cbl2_zlib_1.2.13-2:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "cbl2 zlib 1.2.13-2 on CBL Mariner 2.0" } ], "category": "product_family", "name": "Mariner" } ], "category": "vendor", "name": "Microsoft" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/5.41.0|<5.42.2-rc1", "product": { "name": "vers:unknown/5.41.0|<5.42.2-rc1", "product_id": "CSAFPID-5961963" } }, { "category": "product_version_range", "name": "vers:unknown/5.43.0|<5.43.9", "product": { "name": "vers:unknown/5.43.0|<5.43.9", "product_id": "CSAFPID-5961964" } }, { "category": "product_version_range", "name": "vers:unknown/5.9.4|<5.40.4-rc1", "product": { "name": "vers:unknown/5.9.4|<5.40.4-rc1", "product_id": "CSAFPID-5961962" } } ], "category": "product_name", "name": "perl" } ], "category": "vendor", "name": "SHAY" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-4176", "cwe": { "id": "CWE-1395", "name": "Dependency on Vulnerable Third-Party Component" }, "notes": [ { "category": "description", "text": "Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib.\n\nCompress::Raw::Zlib is included in the Perl package as a dual-life core module, and is vulnerable to CVE-2026-3381 due to a vendored version of zlib which has several vulnerabilities, including CVE-2026-27171. The bundled Compress::Raw::Zlib was updated to version 2.221 in Perl blead commit c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-4176" }, { "category": "description", "text": "Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib.\n\nCompress::Raw::Zlib is included in the Perl package as a dual-life core module, and is vulnerable to CVE-2026-3381 due to a vendored version of zlib which has several vulnerabilities, including CVE-2026-27171. The bundled Compress::Raw::Zlib was updated to version 2.221 in Perl blead commit c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/4xxx/CVE-2026-4176.json" }, { "category": "description", "text": "Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib.\nCompress::Raw::Zlib is included in the Perl package as a dual-life core module, and is vulnerable to CVE-2026-3381 due to a vendored version of zlib which has several vulnerabilities, including CVE-2026-27171. The bundled Compress::Raw::Zlib was updated to version 2.221 in Perl blead commit c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94.\nA flaw was found in Perl, stemming from its inclusion of an outdated `Compress::Raw::Zlib` module. This module bundles a vulnerable version of the `zlib` library, which is known to contain multiple security flaws, including CVE-2026-3381 and CVE-2026-27171. Exploitation of these underlying vulnerabilities could lead to various security impacts, depending on the specific flaw within `zlib`.\nThis is an Important vulnerability affecting Red Hat Enterprise Linux and OpenShift Container Platform. The Perl package includes an outdated `Compress::Raw::Zlib` module, which bundles a vulnerable version of the `zlib` library. Exploitation of the underlying `zlib` flaws could lead to various security impacts, depending on the flaw exploited. The general impact is tied to the same impact as the original flaw being exploited.", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4176.json" }, { "category": "description", "text": "Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib", "title": "microsoft - https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Mar" }, { "category": "other", "text": "9e-05", "title": "EPSS" }, { "category": "other", "text": "4.6", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Certbundde", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to a product by vendor Open Source", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 2\n", "title": "Vendor assessment" } ], "product_status": { "known_affected": [ "CSAFPID-5961962", "CSAFPID-5961963", "CSAFPID-5961964", "CSAFPID-5963600", "CSAFPID-5963601", "CSAFPID-5963602", "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-1439328", "CSAFPID-1439329", "CSAFPID-2695641", "CSAFPID-2695642", "CSAFPID-2695643", "CSAFPID-2695644", "CSAFPID-2858634", "CSAFPID-2879645", "CSAFPID-5775812", "CSAFPID-5897287", "CSAFPID-5177652", "CSAFPID-5197899", "CSAFPID-5202168", "CSAFPID-5202171", "CSAFPID-5202181", "CSAFPID-5238780", "CSAFPID-5238784", "CSAFPID-5263222", "CSAFPID-5263224", "CSAFPID-5630127", "CSAFPID-5687125", "CSAFPID-5687130", "CSAFPID-5687131", "CSAFPID-5687132", "CSAFPID-5687135", "CSAFPID-5687136", "CSAFPID-5687137", "CSAFPID-5687138", "CSAFPID-5687139", "CSAFPID-5687140", "CSAFPID-5687141", "CSAFPID-5687142", "CSAFPID-5687143", "CSAFPID-5687146", "CSAFPID-5687147", "CSAFPID-5733333", "CSAFPID-5761982", "CSAFPID-5775809", "CSAFPID-5775810", "CSAFPID-5775813", "CSAFPID-5775814", "CSAFPID-5775815", "CSAFPID-5775816", "CSAFPID-5775818", "CSAFPID-5775821", "CSAFPID-5826710", "CSAFPID-5874039", "CSAFPID-5874046" ] }, "references": [ { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-4176" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/4xxx/CVE-2026-4176.json" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0901.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-4176.json" }, { "category": "external", "summary": "Source - microsoft", "url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Mar" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; redhat", "url": "https://github.com/Perl/perl5/commit/c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; redhat", "url": "https://lists.security.metacpan.org/cve-announce/msg/37638919/" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; redhat", "url": "https://metacpan.org/release/PMQS/Compress-Raw-Zlib-2.221/source/Changes" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; redhat", "url": "https://metacpan.org/release/SHAY/perl-5.40.4/changes" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; redhat", "url": "https://metacpan.org/release/SHAY/perl-5.42.2/changes" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-3381" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "http://www.openwall.com/lists/oss-security/2026/03/30/2" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0901.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0901" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/advisories/GHSA-q2q4-jjp8-f6m3" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-4176" }, { "category": "external", "summary": "Reference - redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4176" } ], "remediations": [ { "category": "mitigation", "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.", "product_ids": [ "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-1439328", "CSAFPID-1439329", "CSAFPID-2695641", "CSAFPID-2695642", "CSAFPID-2695643", "CSAFPID-2695644", "CSAFPID-2858634", "CSAFPID-2879645" ] } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL" }, "products": [ "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-1439328", "CSAFPID-1439329", "CSAFPID-2695641", "CSAFPID-2695642", "CSAFPID-2695643", "CSAFPID-2695644", "CSAFPID-2858634", "CSAFPID-2879645", "CSAFPID-5177652", "CSAFPID-5197899", "CSAFPID-5202168", "CSAFPID-5202171", "CSAFPID-5202181", "CSAFPID-5238780", "CSAFPID-5238784", "CSAFPID-5263222", "CSAFPID-5263224", "CSAFPID-5630127", "CSAFPID-5687125", "CSAFPID-5687130", "CSAFPID-5687131", "CSAFPID-5687132", "CSAFPID-5687135", "CSAFPID-5687136", "CSAFPID-5687137", "CSAFPID-5687138", "CSAFPID-5687139", "CSAFPID-5687140", "CSAFPID-5687141", "CSAFPID-5687142", "CSAFPID-5687143", "CSAFPID-5687146", "CSAFPID-5687147", "CSAFPID-5733333", "CSAFPID-5761982", "CSAFPID-5775809", "CSAFPID-5775810", "CSAFPID-5775812", "CSAFPID-5775813", "CSAFPID-5775814", "CSAFPID-5775815", "CSAFPID-5775816", "CSAFPID-5775818", "CSAFPID-5775821", "CSAFPID-5826710", "CSAFPID-5874039", "CSAFPID-5874046", "CSAFPID-5897287", "CSAFPID-5961962", "CSAFPID-5961963", "CSAFPID-5961964", "CSAFPID-5963600", "CSAFPID-5963601", "CSAFPID-5963602" ] } ], "title": "CVE-2026-4176" } ] }