Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Free5GC's PCF (Go package github.com/free5gc/pcf) before 1.4.3 can panic with a nil pointer dereference on the app-session create endpoint when a request sets suppFeat to "1" and omits AfRoutReq from medComponents. An attacker needs a valid npcf-policyauthorization OAuth2 access token, and can then repeatedly trigger HTTP 500 responses and per-request crashes, causing availability degradation without process termination. Upgrade to version 1.4.3, where this is fixed.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.5 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0035, the 28th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:06 UTC First seen by agentprime
- 31 Oct 2026, 15:06 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-wwqh-7jm5-gj7w
- OSV: GHSA-wwqh-7jm5-gj7w
- github.com/free5gc/free5gc/security/advisories/GHSA-wwqh-7jm5-gj7w
- nvd.nist.gov/vuln/detail/CVE-2026-44317
- github.com/free5gc/free5gc/issues/879
- github.com/free5gc/pcf/pull/65
- github.com/free5gc/pcf/commit/508d70b8527a6c8c923179dad450ea01e16b6aeb
- github.com/free5gc/free5gc