Out-of-bounds Read in Jqlang Jq
CVE-2026-39979
jq is a command-line JSON processor. In commits before 2f09060afab23fe9390cce7cb860b10416e1bf5f, the jv_parse_sized() API in libjq accepts a counted buffer with an explicit length parameter, but its error-handling path formats the input bu…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (22.0th percentile) — read the EPSS interpretation.
Affected products
- Jqlang Jq — versions < 2f09060afab23fe9390cce7cb860b10416e1bf5f
Weakness classification (CWE)
References
- https://github.com/jqlang/jq/security/advisories/GHSA-2hhh-px8h-355p (x_refsource_CONFIRM)
- https://github.com/jqlang/jq/commit/2f09060afab23fe9390cce7cb860b10416e1bf5f (x_refsource_MISC)