CVE-2026-13575
CVE-2026-13575
HTTP::Session versions before 0.54 for Perl allow memcached command injection via unfiltered session ids in HTTP::Session::Store::CHI. The session id from the client's cookie reaches the CHI cache unchanged. The sibling HTTP::Session::Store::Memcached rejects ids that contain control characters, but the CHI store has no such check, and CHI does not escape keys for its memcached drivers. With a memcached driver, a CR and LF in the session id end the cache command early, and the server reads the bytes after them as further commands.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
No affected-product ranges reported in collected sources.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/tokuhirom/http-session/commit/58288cbf941da6d2aad4ff5c0c79e523d9e583b4.patch9b29abf9-4ab0-4765-b253-1875cd9b441e
- https://metacpan.org/release/KTAT/http-session-0.53/source/lib/HTTP/Session/Store/CHI.pm9b29abf9-4ab0-4765-b253-1875cd9b441e
- https://metacpan.org/release/TOKUHIROM/http-session-0.54/changes9b29abf9-4ab0-4765-b253-1875cd9b441e
- http://www.openwall.com/lists/oss-security/2026/11/01/2af854a3a-2127-422b-91ae-364da2661108