CVE-2026-110685

critical · 9.1

Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded arguments of a tagged value when its THAW method dies in decode_tag. With allow_tags, a tagged value's class name and argument array are decoded and passed to the class's THAW method. Both are released only after THAW returns, so a THAW that dies leaves the whole decoded argument structure allocated. Each rejected document leaks data of a size the sender chooses, so a process that catches the error and keeps running exhausts its memory.

9.1

CVSS

0.5%

EPSS (exploit prob.)

43rd

EPSS percentile

2026-10-19

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Weaknesses

CWE-401

References

https://github.com/rurban/Cpanel-JSON-XS/commit/9ab010221c069a7af9ef7463454ecd3b8ace9c58.patch
https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.80/changes

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-110685