{ "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-2026-31933", "tracking": { "current_release_date": "2026-04-03T16:59:25.708707Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-31933", "initial_release_date": "2026-04-02T14:27:26.918016Z", "revision_history": [ { "date": "2026-04-02T14:27:26.918016Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-04-02T14:27:29.968910Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-04-02T14:38:40.491368Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (2).| References created (2).| CWES updated (1)." }, { "date": "2026-04-02T14:38:43.028477Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-04-02T15:35:28.344453Z", "number": "5", "summary": "NCSC Score updated." }, { "date": "2026-04-03T00:27:43.466340Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-04-03T00:27:46.035293Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-04-03T12:44:15.781879Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| Description created for source.| Products connected (2)." }, { "date": "2026-04-03T12:44:18.532959Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-04-03T15:37:08.826249Z", "number": "10", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-04-03T15:37:18.449632Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-04-03T16:39:14.358775Z", "number": "12", "summary": "Unknown change." } ], "status": "interim", "version": "12" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-2530884" } } ], "category": "product_name", "name": "suricata" } ], "category": "product_family", "name": "bookworm" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-2530885" } } ], "category": "product_name", "name": "suricata" } ], "category": "product_family", "name": "bullseye" } ], "category": "vendor", "name": "Debian" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<7.0.15", "product": { "name": "vers:unknown/<7.0.15", "product_id": "CSAFPID-5984840" } }, { "category": "product_version_range", "name": "vers:unknown/>=8.0.0|<8.0.4", "product": { "name": "vers:unknown/>=8.0.0|<8.0.4", "product_id": "CSAFPID-5984841" } } ], "category": "product_name", "name": "suricata" } ], "category": "vendor", "name": "OISF" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-31933", "cwe": { "id": "CWE-407", "name": "Inefficient Algorithmic Complexity" }, "notes": [ { "category": "description", "text": "Suricata is a network IDS, IPS and NSM engine. Prior to versions 7.0.15 and 8.0.4, specially crafted traffic can cause Suricata to slow down, affecting performance in IDS mode. This issue has been patched in versions 7.0.15 and 8.0.4.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-31933" }, { "category": "description", "text": "Suricata is a network IDS, IPS and NSM engine. Prior to versions 7.0.15 and 8.0.4, specially crafted traffic can cause Suricata to slow down, affecting performance in IDS mode. This issue has been patched in versions 7.0.15 and 8.0.4.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/31xxx/CVE-2026-31933.json" }, { "category": "description", "text": "A flaw was found in Suricata, a network Intrusion Detection System (IDS), Intrusion Prevention System (IPS), and Network Security Monitoring (NSM) engine. A remote attacker can exploit this vulnerability by sending specially crafted network traffic. This can cause Suricata to slow down significantly, leading to a denial of service (DoS) in IDS mode, which impacts the system's ability to detect and prevent threats.\nThis is an Important denial of service vulnerability in Suricata, a network Intrusion Detection System (IDS). Specially crafted network traffic can cause Suricata to experience significant performance degradation when operating in IDS mode. This can impair the system's ability to effectively detect and prevent threats in Red Hat environments where Suricata is deployed.", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31933.json" }, { "category": "description", "text": "Suricata is a network IDS, IPS and NSM engine. Prior to versions 7.0.15 and 8.0.4, specially crafted traffic can cause Suricata to slow down, affecting performance in IDS mode. This issue has been patched in versions 7.0.15 and 8.0.4.", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-31933" }, { "category": "other", "text": "0.0004", "title": "EPSS" }, { "category": "other", "text": "4.4", "title": "NCSC Score" }, { "category": "other", "text": "There is cvss data available from source Redhat", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to (a version of) an uncommon product, There is cwe data available from source Nvd", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 3\n", "title": "Vendor assessment" } ], "product_status": { "known_affected": [ "CSAFPID-5984840", "CSAFPID-5984841", "CSAFPID-2530884", "CSAFPID-2530885" ] }, "references": [ { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-31933" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/31xxx/CVE-2026-31933.json" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31933.json" }, { "category": "external", "summary": "Source - debian", "url": "https://security-tracker.debian.org/tracker/CVE-2026-31933" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; redhat", "url": "https://github.com/OISF/suricata/security/advisories/GHSA-hvp5-gpr6-j4gp" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; redhat", "url": "https://redmine.openinfosecfoundation.org/issues/8272" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-31933" }, { "category": "external", "summary": "Reference - redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31933" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-2530884", "CSAFPID-2530885", "CSAFPID-5984840", "CSAFPID-5984841" ] } ], "title": "CVE-2026-31933" } ] }