Vulnerability · Published May 11, 2026 · Assigned by GitHub_M

CVE-2026-44777jq: stack overflow in module loading on mutual `include`

Medium 5.4

In plain English

A medium-severity security flaw in jq from jqlang. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.4Medium
Exploit odds (30 days)0.2%top 94.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

jq is a command-line JSON processor. In 1.8.2rc1 and earlier, the ordinary module loader recurses without cycle detection when two otherwise valid modules include each other.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.22jq1.8.2-r0ALPINE-CVE-2026-44777
Alpine:v3.23jq1.8.2-r0ALPINE-CVE-2026-44777
Alpine:v3.24jq1.8.2-r0ALPINE-CVE-2026-44777
Debian:12jq1.6-2.1+deb12u2DEBIAN-CVE-2026-44777
Debian:13jq1.7.1-6+deb13u3DEBIAN-CVE-2026-44777
Debian:14jq1.8.1-6DEBIAN-CVE-2026-44777
Ubuntu:22.04:LTSjqno fix listedUBUNTU-CVE-2026-44777
Ubuntu:24.04:LTSjqno fix listedUBUNTU-CVE-2026-44777
Ubuntu:25.10jqno fix listedUBUNTU-CVE-2026-44777
Ubuntu:26.04:LTSjqno fix listedUBUNTU-CVE-2026-44777
Ubuntu:26.10jqno fix listedUBUNTU-CVE-2026-44777

Affected products (as reported)

VendorProductVersions
jqlang jq <= 1.8.2rc1

Weakness: CWE-674 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P

References