HTTP::Body versions before 1.24_02 for Perl parse the trailer in quadratic time.
Everything after the last chunk in the same call to add() is parsed with HTTP::Headers, which takes time quadratic in the number of fields of one name. For example, it takes several seconds to parse 16 KiB of "a:" lines.
A remote attackercan exhause the CPU with a single request.
HTTP::Body version 1.25 limits the size and number of lines in the trailer.
Metrics
Affected Vendors & Products
References
History
Fri, 06 Nov 2026 11:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Libwww-perl
Libwww-perl http-body |
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| Vendors & Products |
Libwww-perl
Libwww-perl http-body |
Fri, 06 Nov 2026 08:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | HTTP::Body versions before 1.24_02 for Perl parse the trailer in quadratic time. Everything after the last chunk in the same call to add() is parsed with HTTP::Headers, which takes time quadratic in the number of fields of one name. For example, it takes several seconds to parse 16 KiB of "a:" lines. A remote attackercan exhause the CPU with a single request. HTTP::Body version 1.25 limits the size and number of lines in the trailer. | |
| Title | HTTP::Body versions before 1.24_02 for Perl parse the trailer in quadratic time | |
| Weaknesses | CWE-770 | |
| References |
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Status: PUBLISHED
Assigner: CPANSec
Published: 2026-11-06T07:47:23.570Z
Updated: 2026-11-06T07:47:23.570Z
Reserved: 2026-11-03T07:58:36.822Z
Link: CVE-2026-121006
No data.
Status : Received
Published: 2026-11-06T08:17:19.827
Modified: 2026-11-06T08:17:19.827
Link: CVE-2026-121006
No data.
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