要点
- CVE-2026-23831 是影响 github.com/sigstore/rekor, rekor (linuxfoundation) 的中危 (CVSS 5.3)漏洞。
- 未来 30 天内被利用的概率（EPSS）：0.43%，高于 36.9% 的漏洞。
- 修复：升级到 1.5.0 或更高版本。
Description
Summary
Rekor’s cose v0.0.1 entry implementation can panic on attacker-controlled input when canonicalizing a proposed entry with an empty spec.message. validate() returns nil (success) when message is empty, leaving sign1Msg uninitialized, and Canonicalize() later dereferences v.sign1Msg.Payload.
Impact
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.
Patches
Upgrade to v1.5.0
Workarounds
None
NVD description
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.
github.com/sigstore/rekor 的其他漏洞
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