CVE-2026-116285
Dashboard / Vulnerabilities / CVE-2026-116285
Summary: HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodies
Details: 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.
References: https://cpan.org/modules, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/116xxx/CVE-2026-116285.json, https://metacpan.org/release/GETTY/HTTP-Body-1.24/changes, https://nvd.nist.gov/vuln/detail/CVE-2026-116285, https://github.com/libwww-perl/HTTP-Body/commit/954a5343d2a095b59d357f28759c5388d1169574.patch, https://github.com/libwww-perl/HTTP-Body
Affected packages
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