HTTP::Session versions before 0.43 for Perl allow memcached command injection via unfiltered session ids in HTTP::Session::Store::Memcached

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Summary

CVECVE-2011-10042
StatePUBLISHED
AssignerCPANSec
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-14 14:17:21 UTC
Updated2026-11-14 21:16:49 UTC
DescriptionHTTP::Session versions before 0.43 for Perl allow memcached command injection via unfiltered session ids in HTTP::Session::Store::Memcached. The session id from the client's cookie reaches memcached unchanged as the cache key. A CR and LF in the session id end the cache command early, and the server reads the bytes after them as further commands.

Risk And Classification

Problem Types: CWE-93 | CWE-93 CWE-93 Improper Neutralization of CRLF Sequences

References

ReferenceSourceLinkTags
github.com/tokuhirom/http-session/commit/039345db9bc9311868019fde67b89c3... 9b29abf9-4ab0-4765-b253-1875cd9b441e github.com
metacpan.org/release/TOKUHIROM/HTTP-Session-0.42/changes 9b29abf9-4ab0-4765-b253-1875cd9b441e metacpan.org
www.openwall.com/lists/oss-security/2026/11/14/10 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Masahiro Nagano (kazeburo) (en)

Additional Advisory Data

SourceTimeEvent
CNA2011-02-20T00:00:00.000ZHTTP::Session version 0.42 released.
CNA2011-02-20T00:00:00.000ZHTTP::Session version 0.43 released with improved protections against memcached injection
CNA2026-06-27T00:00:00.000ZHTTP::Session version 0.54 released, with the distribution marked as deprecated.

Solutions

CNA: Upgrade to HTTP::Session 0.43 or later. Note that HTTP::Session 0.54 includes additional security fixes, but has been marked as deprecated. Users should migrate to an alternative such as Plack::Middleware::Session.

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