{ "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-2026-32937", "tracking": { "current_release_date": "2026-03-27T20:49:29.979789Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-32937", "initial_release_date": "2026-03-18T17:42:51.687855Z", "revision_history": [ { "date": "2026-03-18T17:42:51.687855Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (5).| CWES updated (1)." }, { "date": "2026-03-18T17:42:57.747970Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-18T18:12:32.220238Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (4).| CWES updated (1)." }, { "date": "2026-03-18T18:12:42.116221Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-19T11:40:03.150635Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (5).| CWES updated (1)." }, { "date": "2026-03-20T18:24:03.551426Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1)." }, { "date": "2026-03-20T18:24:09.507885Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-03-20T18:24:40.648643Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (4).| CWES updated (1)." }, { "date": "2026-03-20T18:24:47.622368Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-03-20T20:39:18.990551Z", "number": "10", "summary": "Unknown change." }, { "date": "2026-03-20T21:41:31.574770Z", "number": "11", "summary": "References created (1)." }, { "date": "2026-03-20T21:59:21.941294Z", "number": "12", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-20T21:59:25.580266Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-03-21T13:47:16.150703Z", "number": "14", "summary": "References removed (1)." }, { "date": "2026-03-22T00:51:42.522453Z", "number": "15", "summary": "References created (1)." }, { "date": "2026-03-22T11:24:45.943708Z", "number": "16", "summary": "References removed (1)." }, { "date": "2026-03-23T00:53:52.163650Z", "number": "17", "summary": "References created (1)." }, { "date": "2026-03-23T05:15:48.980201Z", "number": "18", "summary": "References removed (1)." }, { "date": "2026-03-24T20:56:07.745300Z", "number": "19", "summary": "References created (1)." }, { "date": "2026-03-25T18:13:31.377593Z", "number": "20", "summary": "References created (1)." }, { "date": "2026-03-25T18:13:33.512707Z", "number": "21", "summary": "Source created.| CVE status created. (valid)| Description created for source.| References created (5)." }, { "date": "2026-03-25T18:13:34.024588Z", "number": "22", "summary": "NCSC Score updated." }, { "date": "2026-03-27T19:47:15.075368Z", "number": "23", "summary": "CVSS created.| Products created (1).| Product Identifiers created (1)." }, { "date": "2026-03-27T19:47:17.324865Z", "number": "24", "summary": "NCSC Score updated." } ], "status": "interim", "version": "24" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<1.2.2", "product": { "name": "vers:unknown/<1.2.2", "product_id": "CSAFPID-5944116", "product_identification_helper": { "cpe": "cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Free5gc" } ], "category": "vendor", "name": "free5GC" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<1.2.2", "product": { "name": "vers:unknown/<1.2.2", "product_id": "CSAFPID-5874330" } }, { "category": "product_version_range", "name": "vers:unknown/>=0|<1.2.2", "product": { "name": "vers:unknown/>=0|<1.2.2", "product_id": "CSAFPID-5844762" } } ], "category": "product_name", "name": "chf" } ], "category": "vendor", "name": "free5gc" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-32937", "cwe": { "id": "CWE-129", "name": "Improper Validation of Array Index" }, "notes": [ { "category": "description", "text": "### Impact\nThis is an out-of-bounds slice access vulnerability in the CHF `nchf-convergedcharging` service.\nA valid authenticated request to PUT `/nchf-convergedcharging/v3/recharging/:ueId?ratingGroup=...` can trigger a server-side panic in `github.com/free5gc/chf/internal/sbi.(*Server).RechargePut(...)` due to an out-of-range slice access. In the reported runtime, Gin recovery converts the panic into HTTP 500, but the recharge path remains remotely panic-triggerable and can be abused repeatedly to degrade recharge functionality and flood logs. In deployments without equivalent recovery handling, this panic may cause more severe service disruption.\n\n### Patches\nhttps://github.com/free5gc/chf/pull/61\n\n### Workarounds\n- Restrict access to the `nchf-convergedcharging` recharge endpoint to strictly trusted NF callers only.\n- Apply rate limiting or network ACLs in front of the CHF SBI interface to reduce repeated panic-trigger attempts.\n- If the recharge API is not required, temporarily disable or block external reachability to this route.\n- Ensure panic recovery, monitoring, and alerting are enabled.", "title": "github - https://github.com/advisories/GHSA-6g43-577r-wf4x" }, { "category": "description", "text": "### Impact\nThis is an out-of-bounds slice access vulnerability in the CHF `nchf-convergedcharging` service.\nA valid authenticated request to PUT `/nchf-convergedcharging/v3/recharging/:ueId?ratingGroup=...` can trigger a server-side panic in `github.com/free5gc/chf/internal/sbi.(*Server).RechargePut(...)` due to an out-of-range slice access. In the reported runtime, Gin recovery converts the panic into HTTP 500, but the recharge path remains remotely panic-triggerable and can be abused repeatedly to degrade recharge functionality and flood logs. In deployments without equivalent recovery handling, this panic may cause more severe service disruption.\n\n### Patches\nhttps://github.com/free5gc/chf/pull/61\n\n### Workarounds\n- Restrict access to the `nchf-convergedcharging` recharge endpoint to strictly trusted NF callers only.\n- Apply rate limiting or network ACLs in front of the CHF SBI interface to reduce repeated panic-trigger attempts.\n- If the recharge API is not required, temporarily disable or block external reachability to this route.\n- Ensure panic recovery, monitoring, and alerting are enabled.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-6g43-577r-wf4x.json?alt=media" }, { "category": "description", "text": "### Impact\nThis is an out-of-bounds slice access vulnerability in the CHF `nchf-convergedcharging` service.\nA valid authenticated request to PUT `/nchf-convergedcharging/v3/recharging/:ueId?ratingGroup=...` can trigger a server-side panic in `github.com/free5gc/chf/internal/sbi.(*Server).RechargePut(...)` due to an out-of-range slice access. In the reported runtime, Gin recovery converts the panic into HTTP 500, but the recharge path remains remotely panic-triggerable and can be abused repeatedly to degrade recharge functionality and flood logs. In deployments without equivalent recovery handling, this panic may cause more severe service disruption.\n\n### Patches\nhttps://github.com/free5gc/chf/pull/61\n\n### Workarounds\n- Restrict access to the `nchf-convergedcharging` recharge endpoint to strictly trusted NF callers only.\n- Apply rate limiting or network ACLs in front of the CHF SBI interface to reduce repeated panic-trigger attempts.\n- If the recharge API is not required, temporarily disable or block external reachability to this route.\n- Ensure panic recovery, monitoring, and alerting are enabled.", "title": "github - https://api.github.com/advisories/GHSA-6g43-577r-wf4x" }, { "category": "description", "text": "free5GC is an open source 5G core network. free5GC CHF prior to version 1.2.2 has an out-of-bounds slice access vulnerability in the CHF `nchf-convergedcharging` service. A valid authenticated request to PUT `/nchf-convergedcharging/v3/recharging/:ueId?ratingGroup=...` can trigger a server-side panic in `github.com/free5gc/chf/internal/sbi.(*Server).RechargePut(...)` due to an out-of-range slice access. In the reported runtime, Gin recovery converts the panic into HTTP 500, but the recharge path remains remotely panic-triggerable and can be abused repeatedly to degrade recharge functionality and flood logs. In deployments without equivalent recovery handling, this panic may cause more severe service disruption. free5GC CHF patches the issue. Some workarounds are available: Restrict access to the `nchf-convergedcharging` recharge endpoint to strictly trusted NF callers only; apply rate limiting or network ACLs in front of the CHF SBI interface to reduce repeated panic-trigger attempts; if the recharge API is not required, temporarily disable or block external reachability to this route; and/or ensure panic recovery, monitoring, and alerting are enabled.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-32937" }, { "category": "description", "text": "free5GC is an open source 5G core network. free5GC CHF prior to version 1.2.2 has an out-of-bounds slice access vulnerability in the CHF `nchf-convergedcharging` service. A valid authenticated request to PUT `/nchf-convergedcharging/v3/recharging/:ueId?ratingGroup=...` can trigger a server-side panic in `github.com/free5gc/chf/internal/sbi.(*Server).RechargePut(...)` due to an out-of-range slice access. In the reported runtime, Gin recovery converts the panic into HTTP 500, but the recharge path remains remotely panic-triggerable and can be abused repeatedly to degrade recharge functionality and flood logs. In deployments without equivalent recovery handling, this panic may cause more severe service disruption. free5GC CHF patches the issue. Some workarounds are available: Restrict access to the `nchf-convergedcharging` recharge endpoint to strictly trusted NF callers only; apply rate limiting or network ACLs in front of the CHF SBI interface to reduce repeated panic-trigger attempts; if the recharge API is not required, temporarily disable or block external reachability to this route; and/or ensure panic recovery, monitoring, and alerting are enabled.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/32xxx/CVE-2026-32937.json" }, { "category": "description", "text": "Out-of-Bounds Slice Access in free5GC CHF Leading to DoS in github.com/free5gc/chf", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGO-2026-4750.json?alt=media" }, { "category": "other", "text": "0.00042", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "title": "CVSSV4" }, { "category": "other", "text": "7.1", "title": "CVSSV4 base score" }, { "category": "other", "text": "4.4", "title": "NCSC Score" }, { "category": "other", "text": "Is related to (a version of) an uncommon product", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5844762", "CSAFPID-5874330", "CSAFPID-5944116" ] }, "references": [ { "category": "external", "summary": "Source - github", "url": "https://github.com/advisories/GHSA-6g43-577r-wf4x" }, { "category": "external", "summary": "Source raw - github", "url": "https://api.github.com/advisories/GHSA-6g43-577r-wf4x" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-6g43-577r-wf4x.json?alt=media" }, { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-6g43-577r-wf4x" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-32937" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/32xxx/CVE-2026-32937.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGO-2026-4750.json?alt=media" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/free5gc/free5gc/security/advisories/GHSA-6g43-577r-wf4x" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/free5gc/free5gc/issues/864" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/free5gc/chf/pull/61" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/free5gc/chf/commit/55af766f321a00afa978e806548c96f8a7d2433e" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-6g43-577r-wf4x" }, { "category": "external", "summary": "Reference - github; osv", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32937" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-5844762", "CSAFPID-5874330", "CSAFPID-5944116" ] } ], "title": "CVE-2026-32937" } ] }