CVE-2026-23831
Rekor COSE v0.0.1 Canonicalize crashes when passed empty Message
5.3CVSSMEDIUM
Description
Rekor's COSE v0.0.1 entry type nil pointer dereference in Canonicalize via empty Message
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:LAvailabilityLow
Weaknesses
Affected Products
Attack Graph
Products CVE Techniques Tactics
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Exploitability
Official Patch Available
MITRE ATT&CK
2 techniques Impact
Initial Access
References
https://github.com/sigstore/rekor/security/advisories/GHSA-273p-m2cw-6833
github.com
https://nvd.nist.gov/vuln/detail/CVE-2026-23831
nvd.nist.gov
https://github.com/sigstore/rekor/commit/39bae3d192bce48ef4ef2cbd1788fb5770fee8cd
github.com
and 2 more references View all →
Timeline
Published
Jan 22, 2026
Last Updated
Feb 2, 2026
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