Red Hat Security Advisory: jq security update
Affects Red Hat jqSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 6.9 Medium.
Data as of 11 Nov 2026, 15:33 UTC
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 13 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| jqlangjq | Affected
| Fixed in– |
AI-suggested
Red Hat has released updated jq packages for Red Hat Enterprise Linux 10 and associated CodeReady Linux Builder products that address these vulnerabilities. Users should apply the security update as detailed in Red Hat advisory RHSA-2026:98603 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation is required beyond applying the official patch.
Description
Two security vulnerabilities were identified in jq, a command-line JSON processor. The first is an out-of-bounds read in the jv_parse_sized() function triggered by error formatting for non-NUL-terminated buffers (CVE-2026-39979). The second is a denial of service vulnerability caused by crafted JSON objects that induce hash collisions (CVE-2026-40164). Red Hat has issued an important security update for jq in Red Hat Enterprise Linux 10 and related products to address these issues.
References
- access.redhat.com/errata/RHSA-2026:98603 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2458077 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2458084 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_98603.json (opens in a new tab)