CVE-2026-120194: Json-glib: json-glib: infinite loop in json_path_query() with negative jsonpath slice step

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
Public exploit or detection template: none known
Published: 2026-10-31 · updated 2026-11-01
Weakness: CWE-835

Description

A flaw was found in json-glib. The JSONPath slice evaluator used by json_path_query() can enter an infinite loop when given a slice expression with a negative step. An application that evaluates attacker-controlled JSONPath expressions can be forced into a hang, leading to a denial of service.

Affected products

Red Hat OpenShift Container Platform 4.18: all versions
Red Hat Enterprise Linux 10: all versions
Red Hat Enterprise Linux 7: all versions
Red Hat Enterprise Linux 8: all versions
Red Hat Enterprise Linux 9: all versions

References

https://access.redhat.com/security/cve/CVE-2026-120194
https://bugzilla.redhat.com/show_bug.cgi?id=2564418
https://gitlab.gnome.org/GNOME/json-glib/-/issues/96

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