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SCA: security update for github.com/sigstore/rekor (GHSA-273p-m2cw-6833)

medium Tenable Self-Hosted Container Security Plugin ID 436907

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-23831)

See Also

https://github.com/advisories/GHSA-273p-m2cw-6833

Plugin Details

Severity: Medium

ID: 436907

Version: Revision 1.7

Type: Local

Family: SCA Checks

Published: 1/23/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2026-23831

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 1/22/2026

Vulnerability Publication Date: 1/22/2026

Reference Information

CVE: CVE-2026-23831

cwe: CWE-476