CVE-2026-44325 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-44325HIGH

free5GC: NRF POST /oauth2/token structured-form parser type-confusion panic family (Reflect.Set on incompatible types)

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  N  H    7.5   .0039   32.7     —

AFFECTED
  Product  Versions   Fixed
  free5gc  < 4.2.2 –  —

TIMELINE
  May 5   Reserved by GitHub_M
  May 27  EXPLOIT PUBLISHED — CVE-2026-44325 (free5gc). Public exploit reference added.
  May 27  Published (CNA: GitHub_M)

CWE-20, CWE-755, CWE-843 · CNA: GitHub_M · CVSS v3.1 · 4 references · NVD status: Analyzed

Description

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NRF root SBI endpoint POST /oauth2/token contains a parser-level type-confusion bug family. The handler in NFs/nrf/internal/sbi/api_accesstoken.go reflects over models.NrfAccessTokenAccessTokenReq, special-cases only plain string and NrfNfManagementNfType fields, and treats every other field as if it were a single models.PlmnId. The parsed *models.PlmnId is then assigned with reflect.Value.Set() to whichever field name the attacker put in the form body, which panics whenever the destination field's real type is incompatible (slice, different struct, primitive). Gin recovery converts each panic into HTTP 500, but the endpoint remains remotely panicable from a single unauthenticated form-encoded request and is repeatedly triggerable. This vulnerability is fixed in 4.2.2.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 5, 2026	Reserved	Reserved by GitHub_M
May 27, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-44325 (free5gc). Public exploit reference added.
May 27, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
free5gc	free5gc	—	< 4.2.2	—

Weaknesses

CWE-20 · CWE-755 · CWE-843

References (4)

https://github.com/free5gc/free5gc/issues/918 [Exploit, Issue Tracking]
https://github.com/free5gc/free5gc/security/advisories/GHSA-f8qv-7x5w-qr48 [Exploit, Vendor Advisory]
https://github.com/free5gc/nrf/commit/f7bc77daa7425506af7569f2e61c2a210f5a0423 [Patch]
https://github.com/free5gc/nrf/pull/83 [Issue Tracking, Patch]

Authoritative record: CVE-2026-44325 at cve.org

Vendors: free5gc

Weaknesses: CWE-20 · CWE-755 · CWE-843

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-44325 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.