Unrated severityNVD Advisory· Published Oct 19, 2026· Updated Oct 19, 2026
CVE-2026-110673
CVE-2026-110673
Description
Cpanel::JSON::XS versions before 4.80 for Perl allow stack exhaustion via nested tagged values under allow_tags in decode_tag.
With allow_tags, "(" starts a tagged value. Its tag and value are decoded recursively, and each can start another tagged value. Unlike arrays and objects, this nesting is not counted against max_depth.
A run of "(" bytes exhausts the C stack and triggers an uncatchable segmentation fault regardless of max_depth.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1- Range: <4.80
Patches
Vulnerability mechanics
References
2News mentions
1- Cpanel::JSON::XS: Batch of 14 Vulnerabilities Affecting Parsing and Encoding DisclosedVypr Intelligence · Oct 19, 2026