CVE-2026-44317
6.5 MEDIUMfree5GC is an open-source implementation of the 5G core network
Published: 2026-05-27 · Last updated: 2026-05-28
Severity and scoring
- CVSS
- 6.5 MEDIUM
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CWE
- CWE-476, CWE-754
Affected products
| Vendor | Product |
|---|---|
| free5gc | free5gc |
Description
free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's PCF POST /npcf-policyauthorization/v1/app-sessions handler panics on a single authenticated request whose ascReqData.suppFeat == "1" (enabling traffic-routing feature negotiation) and whose medComponents entries supply an afAppId but NO AfRoutReq. The create path then calls provisioningOfTrafficRoutingInfo(smPolicy, appID, routeReq, ...) with routeReq == nil and dereferences routeReq.RouteToLocs (and other fields) without a nil check, causing runtime error: invalid memory address or nil pointer dereference. Gin recovery converts the panic into HTTP 500. This vulnerability is fixed in 4.2.2.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-44317
- [Exploit reference]https://github.com/free5gc/free5gc/issues/879
- [Vendor advisory]https://github.com/free5gc/free5gc/security/advisories/GHSA-wwqh-7jm5-gj7w
- [Patch]https://github.com/free5gc/pcf/commit/508d70b8527a6c8c923179dad450ea01e16b6aeb
- [Patch]https://github.com/free5gc/pcf/pull/65
- [Vendor advisory]https://github.com/free5gc/free5gc/security/advisories/GHSA-wwqh-7jm5-gj7w
Related CVEs
Same vendor
- CVE-2026-44330 — free5GC is an open-source implementation of the 5G core network (10.0 CRITICAL)
- CVE-2026-44329 — free5GC is an open-source implementation of the 5G core network (10.0 CRITICAL)
- CVE-2026-44328 — free5GC is an open-source implementation of the 5G core network (8.2 HIGH)
- CVE-2026-44327 — free5GC is an open-source implementation of the 5G core network (10.0 CRITICAL)
- CVE-2026-44326 — free5GC is an open-source implementation of the 5G core network (9.4 CRITICAL)
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