Dancer versions before 1.3400 for Perl pass unvalidated session ids from the session cookie to the session engine

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Summary

CVECVE-2015-10149
StatePUBLISHED
AssignerCPANSec
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-14 20:17:39 UTC
Updated2026-11-14 23:16:46 UTC
DescriptionDancer versions before 1.3400 for Perl pass unvalidated session ids from the session cookie to the session engine. read_session_id returns the cookie value as the session id without checking its characters, and Dancer hands it to the session engine to load the session. A remote attacker may cause path traversal or injection in a session engine that uses the id in a file path, cache command or query without checking it.

Risk And Classification

Problem Types: CWE-1286 | CWE-1286 CWE-1286 Improper Validation of Syntactic Correctness of Input

References

ReferenceSourceLinkTags
github.com/PerlDancer/Dancer/issues/1117 9b29abf9-4ab0-4765-b253-1875cd9b441e github.com
github.com/PerlDancer/Dancer/issues/1118 9b29abf9-4ab0-4765-b253-1875cd9b441e github.com
metacpan.org/release/BIGPRESH/Dancer-1.3400/changes 9b29abf9-4ab0-4765-b253-1875cd9b441e metacpan.org
github.com/PerlDancer/Dancer/pull/1172 9b29abf9-4ab0-4765-b253-1875cd9b441e github.com
www.openwall.com/lists/oss-security/2026/11/14/15 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
github.com/PerlDancer/Dancer/commit/5a68fddbaef903fd3bd58517ce585cde9867... 9b29abf9-4ab0-4765-b253-1875cd9b441e github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2015-06-03T00:00:00.000ZSession id validation vulnerability first reported in issue 1117.
CNA2016-02-15T00:00:00.000ZDancer version 1.3300 adds session id validation.
CNA2016-02-16T00:00:00.000ZDancer version 1.3301 reverts session id changes that broke Dancer::Session::Cookie.
CNA2018-02-04T00:00:00.000ZPull request 1172 with session id validation created,
CNA2018-05-20T00:00:00.000ZDancer version 1.3203 released with session id validation.
CNA2018-06-15T00:00:00.000ZDancer version 1.3400 released that promotes previous trial releases to stable release.

Solutions

CNA: Upgrade to Dancer 1.3400 or later.

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