rekor: Rekor is a software supply chain transparency log
CVE-2026-23831 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-23831, released January 22, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Rekor is a software supply chain transparency log. In versions 1.4.3 and below, the entry implementation can panic on attacker-controlled input when canonicalizing a proposed entry with an empty spec.message, causing nil Pointer Dereference. Function validate() returns nil (success) when message is empty, leaving sign1Msg uninitialized, and Canonicalize() later dereferences v.sign1Msg.Payload. A malformed proposed entry of the cose/v0.0.1 type can cause a panic on a thread within the Rekor process. The thread is recovered so the client receives a 500 error message and service still continues, so the availability impact of this is minimal. This issue has been fixed in version 1.5.0.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| govulncheck-vulndb · opensuse-leap 15.6 | 0.0.20260205T172317-150000.1.146.1 | SUSE-SU-2026:0403-1 | Feb 6, 2026 |
| govulncheck-vulndb · opensuse-leap 16.0 | 0.0.20260723T184607-160000.1.1 | OPENSUSE-SU-2026:21483-1 | Jul 30, 2026 |
| rekor · Debian 14 | 1.5.0-1 | DEBIAN-CVE-2026-23831 | Jan 22, 2026 |
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