Is github.com/free5gc/smf affected by CVE-2026-44321?

Go github.com/free5gc/smf is affected in <=1.4.3.

Is CVE-2026-44321 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.3%.

high

CVE-2026-44321

Q: Is CVE-2026-44321 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.3%.

Go · github.com/free5gc/smf

Summary

free5GC's SMF UPI POST /upi/v1/upNodesLinks exits the SMF process on overlapping UE pools (unauthenticated, reachable Fatalf)

Severity: high
EPSS: 0.3% (p25)
Also known as: GHSA-44qj-cghf-9p97
Published: 2026-05-08

References

https://github.com/free5gc/free5gc/security/advisories/GHSA-44qj-cghf-9p97
https://nvd.nist.gov/vuln/detail/CVE-2026-44321
https://github.com/free5gc/free5gc/issues/906

Related advisories

CVE-2026-44328 — high · Go/github.com/free5gc/smf
CVE-2026-44329 — medium · Go/github.com/free5gc/smf

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.