CVE-2026-114629 Affecting libweb-simple-perl package, versions <0.035-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-LIBWEBSIMPLEPERL-21694221
- published25 Oct 2026
- disclosed24 Oct 2026
Introduced: 24 Oct 2026
NewCVE-2026-114629 (opens in a new tab)How to fix?
Upgrade Debian:unstable libweb-simple-perl to version 0.035-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libweb-simple-perl package and not the libweb-simple-perl package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
Web::Simple versions before 0.035 for Perl allocate a buffer sized by the Content-Length header for urlencoded body parameters.
Web::Dispatch::ParamParser::get_unpacked_body_from reads an application/x-www-form-urlencoded body using a single read call, with no cap and the return value ignored. Perl's read grows the buffer to the requested length before reading, so the declared Content-Length determines the allocation.
An attacker can trigger this through any route whose dispatch specification has a % body-parameter match, such as sub (POST + %name=), sending a Content-Length far larger than the body actually sent. No authentication is involved.