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VulnerabilityPublished

CVE-2026-120194: Red Hat Enterprise Linux 10 · Infinite Loop

Affects Red Hat Enterprise Linux 10Source CVE Database V5

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Not known to be exploited · CVSS 7.5 High.

Data as of 31 Oct 2026, 10:36 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.17.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 31 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10json-glibAffected–Fixed in–
Red Hat Enterprise Linux 7json-glibAffected–Fixed in–
Red Hat Enterprise Linux 8json-glibAffected–Fixed in–
Red Hat Enterprise Linux 9json-glibAffected–Fixed in–
Red Hat OpenShift Container Platform 4openshift/ose-rhel-coreos-8Affected–Fixed in–
Red Hat OpenShift Container Platform 4openshift/ose-rhel-coreos-9Affected–Fixed in–

AI-suggested

Do not evaluate untrusted JSONPath expressions with json_path_query() or related APIs until a fix is available. Prefer using fixed, application-defined JSONPath expressions. Specifically, reject or avoid slice expressions that specify a negative step. Monitor Red Hat's advisory for the release of a patch and apply it once available.

Description

CVE-2026-120194 is a vulnerability in json-glib's JSONPath slice evaluator used by json_path_query() that can cause an infinite loop when processing a slice expression with a negative step. This flaw allows an attacker who can supply crafted JSONPath expressions to cause the application to hang, resulting in a denial of service. There is no impact on confidentiality or integrity. No fixed release is currently available, and all shipped Red Hat and Fedora json-glib builds with this evaluator are affected. Mitigation involves avoiding evaluation of untrusted JSONPath expressions and rejecting slice expressions with negative steps until a fix is released.

References

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