{"id":"CVE-2026-13575","title":"HTTP::Session versions before 0.54 for Perl allow memcached command injection via unfiltered session ids in HTTP::Session::Store::CHI","summary":"HTTP::Session versions before 0.54 for Perl allow memcached command injection via unfiltered session ids in HTTP::Session::Store::CHI.\n\nThe session id from the client's cookie reaches the CHI cache unchanged. The sibling HTTP::Session::S…","severity":"none","cwe":["CWE-93"],"product":"http-session","affected":["http-session < 0.54"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-11-06T15:00:56.028964Z"},"published":"2026-11-01","updated":"2026-11-06","sourceUpdated":"2026-11-06T15:01:08.985Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-13575","references":[{"url":"https://metacpan.org/release/KTAT/http-session-0.53/source/lib/HTTP/Session/Store/CHI.pm"},{"url":"https://github.com/tokuhirom/http-session/commit/58288cbf941da6d2aad4ff5c0c79e523d9e583b4.patch"},{"url":"https://metacpan.org/release/TOKUHIROM/http-session-0.54/changes"}],"tags":["cve.org"],"epss":0.00933,"epssPercentile":0.60953,"ingestedAt":"2026-11-05T19:30:42.605Z","slug":"CVE-2026-13575","body":"## Overview\n\nHTTP::Session versions before 0.54 for Perl allow memcached command injection via unfiltered session ids in HTTP::Session::Store::CHI.\n\nThe 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.\n\nWith 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.\n\n## Affected\n\n- `http-session < 0.54`\n\n## Remediation\n\nUpgrade to http-session 0.54 or later.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}