CVE-2026-13575
HTTP::Session versions before 0.54 for Perl allow memcached command injection via unfiltered session ids in HTTP::Session::Store::CHI
- State
- Published
- Severity
- Not scored
- Published
- Nov 1, 2026
- Updated
- Nov 1, 2026
- Reserved
- Jun 28, 2026
Description
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.
Scores
The record has no CVSS score.
Weaknesses
- CWE-93 Improper Neutralization of CRLF Sequences
Affected Products
| Product | Versions |
|---|---|
http-session |
|
References
- https://metacpan.org/release/KTAT/http-session-0.53/source/lib/HTTP/Session/Store/CHI.pm
- https://github.com/tokuhirom/http-session/commit/58288cbf941da6d2aad4ff5c0c79e523d9e583b4.patchpatch
- https://metacpan.org/release/TOKUHIROM/http-session-0.54/changesrelease-notes
- http://www.openwall.com/lists/oss-security/2026/11/01/2
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