PT-2026-39711 · Jq · Jq

Califmonk · Published 2026-05-11 · Updated 2026-07-07 · CVE-2026-41257

Positive Technologies (AI Summary)

CVSS v4.0

7.3

High

Base vector

AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/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 bytecode VM's data stack tracks its allocation size using a signed integer. When the stack grows beyond approximately 1 GiB through deeply nested generator forks, the doubling arithmetic overflows. This wrapped value is then passed to realloc and subsequently used in a memmove operation with offsets influenced by an attacker.

Recommendations Update to a version later than 1.8.1.

Exploit

Fix

Memory Corruption

Integer Overflow

Weakness Enumeration

CWE-787

CWE-190

Related Identifiers

CVE-2026-41257

ECHO-5CB6-067B-5460

GHSA-4JM8-M363-4539

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

Affected Products

Jq

References · 57

• 🔥 https://github.com/jqlang/jq/security/advisories/GHSA-4jm8-m363-4539 · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41257.json · Exploit
• https://osv.dev/vulnerability/OESA-2026-2426 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-40612 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-41257 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-41257 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43894 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-41257 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-41256 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43896 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2026:10850-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:21248-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-41257 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43895 · Security Note
• https://osv.dev/vulnerability/OESA-2026-2487 · Vendor Advisory