PT-2026-39710 · Jq · Jq

Klungler · Published 2026-05-11 · Updated 2026-07-07 · CVE-2026-41256

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions jq versions 1.8.1 and earlier

Description Top-level programs loaded from a file using the '-f' flag are truncated at the first embedded NUL byte. A specially crafted filter file containing a NUL byte followed by an arbitrary suffix will compile and execute only the prefix preceding the NUL byte. This results in a prefix/full-buffer mismatch during the compilation path.

Recommendations Update to a version later than 1.8.1.

Exploit

Fix

Weakness Enumeration

CWE-158

Related Identifiers

CVE-2026-41256

ECHO-0FBB-9CA8-7649

GHSA-VF2H-CHRJ-Q3FG

OESA-2026-2424

OESA-2026-2425

OESA-2026-2426

OESA-2026-2427

OESA-2026-2487

OPENSUSE-SU-2026:10850-1

OPENSUSE-SU-2026:21248-1

SUSE-SU-2026:22545-1

Affected Products

Jq

References · 59

• 🔥 https://github.com/jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41256.json · Exploit
• https://osv.dev/vulnerability/OESA-2026-2487 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43896 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-41256 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43894 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-41256 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10850-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-40612 · Security Note
• https://osv.dev/vulnerability/OESA-2026-2426 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43895 · Security Note
• https://osv.dev/vulnerability/OESA-2026-2427 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2425 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-41256 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:22545-1 · Vendor Advisory