CVE-2026-23831

MEDIUM5.3EPSS 0.02%

Rekor's COSE v0.0.1 entry type nil pointer dereference in Canonicalize via empty Message

發布日:2026/1/22修改日:2026/2/4
也稱為:GHSA-273p-m2cw-6833CGA-28f7-f37x-xfxjGO-2026-4354

描述

## 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

受影響套件(3)

CVSS 分數

來源版本嚴重程度向量
osvCVSS 3.1MEDIUM5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

參考連結(6)