CVE-2026-9537: Mojo::JWT 0 to before 1.02

CVE-2026-9537. CVSS 3.1 base score 5.3 (MEDIUM, Source advisory). EPSS 0.00322 (percentile 0.24084), scored 24-Oct-2026.

Affected technology

Mojo::JWT · 0 to before 1.02
JBERGER

Description’s affected range: versions before 1.02 for Perl verify HMAC signatures with a non-constant-time string comparison

Component: Not specified by the source
Function: Mojo::JWT::decode
File: lib/Mojo/JWT.pm

Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Source advisory’s CVSS 3.1 assessment (base score 5.3/10) rates confidentiality and availability impact as none; integrity impact as low. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 25-Oct-2026 01:30 UTC

CWE: CWE-208
CCR priority: 21.3 /100 (P4)
CVSS 3.1: 5.3 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N · Source advisory
EPSS: 0.00322 · percentile 0.24084 · 2026-10-24
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-25 01:28:19.133527+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-9537.html