PT-2026-39709 · Jq · Jq

Califmonk · Published 2026-05-11 · Updated 2026-07-07 · CVE-2026-40612

Positive Technologies (AI Summary)

CVSS v4.0

6.8

Medium

Base vector

AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions jq versions prior to 1.8.2

Description The jv contains() function recurses into nested arrays and objects without a depth limit. When processing a sufficiently nested input structure, this can lead to C stack exhaustion, causing the application to crash.

Recommendations Update to a version later than 1.8.1. As a temporary workaround, restrict the use of the jv contains() function when processing deeply nested JSON structures.

Exploit

Fix

Uncontrolled Recursion

Weakness Enumeration

CWE-674

Related Identifiers

CVE-2026-40612

ECHO-1E5B-F6F3-755B

GHSA-R7M6-X9C7-H69J

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

RHSA-2026:29986

Affected Products

Jq

References · 55

• 🔥 https://github.com/jqlang/jq/security/advisories/GHSA-r7m6-x9c7-h69j · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40612.json · Exploit
• https://osv.dev/vulnerability/openSUSE-SU-2026:10850-1 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2487 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-40612 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-40612 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2426 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-40612 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-41257 · Security Note
• https://osv.dev/vulnerability/OESA-2026-2424 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:21248-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-40612 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-40612 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-44777 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-40612 · Security Note