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.
Metrics
Affected Vendors & Products
| Vendors | Products |
|---|---|
| Rurban |
|
No data.
No data.
References
History
Mon, 19 Oct 2026 21:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Rurban
Rurban cpanel::json::xs |
|
| Vendors & Products |
Rurban
Rurban cpanel::json::xs |
Mon, 19 Oct 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | 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 | |
| Weaknesses | CWE-401 | |
| References |
|
MITRE
Status: PUBLISHED
Assigner: CPANSec
Published: 2026-10-19T18:12:17.344Z
Updated: 2026-10-19T18:12:17.344Z
Reserved: 2026-10-14T13:26:41.061Z
Link: CVE-2026-110685
Vulnrichment
No data.
NVD
Status : Awaiting Analysis
Published: 2026-10-19T19:17:22.097
Modified: 2026-10-19T20:50:17.967
Link: CVE-2026-110685
Redhat
No data.