PT-2026-39710 · Jqlang · Jq

Published 2026-05-11 · Updated 2026-05-11 · CVE-2026-41256

Mitre

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

jq is a command-line JSON processor. In 1.8.1 and earlier, Top-level jq programs loaded from a file with -f are truncated at the first embedded NUL byte on current upstream HEAD. A crafted filter file such as . followed by x00 and arbitrary suffix compiles and executes as only the prefix before the NUL. This leaves jq with a post-CVE-2026-33948 prefix/full-buffer mismatch on the compilation path even though the JSON parser path has already been fixed.

Fix

Weakness Enumeration

CWE-158

Related Identifiers

CVE-2026-41256

Affected Products

Jq

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-41256 · Security Note
• https://github.com/jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg · Note