HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodies.
In chunked mode, used when no content length is given, add() matches each chunk-size line with `/^([\da-fA-F]+).*\x0D\x0A/`. On a line of hex digits whose first LF has no CR before it, the digits and `.*` backtrack against each other, so a single add() takes time quadratic in the line's length. Nothing limits how long the line can be.
A remote attacker can exhaust CPU in applications that pass chunked request bodies to HTTP::Body.
CVSS
No CVSS.
References
Configurations
No configuration.
History
28 Oct 2026, 18:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-10-28 18:17
Updated : 2026-10-29 15:11
NVD link : CVE-2026-116285
Mitre link : CVE-2026-116285
CVE.ORG link : CVE-2026-116285
JSON object : View
Products Affected
No product.
CWE
CWE-1333
Inefficient Regular Expression Complexity
