Is github.com/sigstore/rekor affected by CVE-2026-23831?

Go github.com/sigstore/rekor is affected in <1.5.0.

Is CVE-2026-23831 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

medium

CVE-2026-23831

Q: Is CVE-2026-23831 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

Go · github.com/sigstore/rekor

Summary

Rekor's COSE v0.0.1 entry type nil pointer dereference in Canonicalize via empty Message in github.com/sigstore/rekor

Severity: medium
EPSS: 0.4% (p30)
Also known as: GHSA-273p-m2cw-6833, GO-2026-4354
Published: 2026-02-02

References

https://github.com/sigstore/rekor/security/advisories/GHSA-273p-m2cw-6833
https://nvd.nist.gov/vuln/detail/CVE-2026-23831
https://github.com/sigstore/rekor/commit/39bae3d192bce48ef4ef2cbd1788fb5770fee8cd

Related advisories

CVE-2026-24117 — medium · Go/github.com/sigstore/rekor

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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.