CVE-2026-40249
- Source
- https://cve.org/CVERecord?id=CVE-2026-40249
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40249.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-40249
- Aliases
- Published
- 2026-04-16T21:59:36.282Z
- Modified
- 2026-07-08T08:13:12.405523475Z
- Severity
-
- 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- free5gc UDR fail-open request handling in PolicyDataSubsToNotifySubsIdPut may allow unintended subscription updates after input errors
- Details
-
free5GC is an open-source implementation of the 5G core network. In versions 4.2.1 and below of the UDR service, the PUT handler for updating Policy Data notification subscriptions at /nudr-dr/v2/policy-data/subs-to-notify/{subsId} does not return after request body retrieval or deserialization errors. Although HTTP 500 or 400 error responses are sent, execution continues and the processor is invoked with a potentially uninitialized or partially initialized PolicyDataSubscription object. This fail-open behavior may allow unintended modification of existing Policy Data notification subscriptions with invalid or empty input, depending on downstream processor and storage behavior. A patched version was not available at the time of publication.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40249.json", "cwe_ids": [ "CWE-636", "CWE-754" ], "cna_assigner": "GitHub_M" }- References
Affected packages
Git / github.com/free5gc/free5gc
Affected ranges
- Type
- GIT
- Repo
- https://github.com/free5gc/free5gc
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedLast affected
- Database specific
{ "cpe": "cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*", "extracted_events": [ { "introduced": "0" }, { "last_affected": "4.2.1" } ], "source": [ "AFFECTED_FIELD", "CPE_RANGE" ] }