Description
Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler.

The handler compares the request path against the layout directory name as text, while the lookup that follows canonicalises it. A doubled slash, a dot segment, a percent-encoded slash, or a different capitalisation on a case-insensitive filesystem therefore misses the guard.

The handler is off by default, enabled with auto_page. The layout wrapping every page is already public, so this discloses one of the application's other layouts.
Published: 2026-09-22
Score: 5.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Upgrade to Dancer2 2.2.0 or later.

Tracking

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History

Wed, 23 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 22 Sep 2026 03:30:00 +0000

Type Values Removed Values Added
References

Tue, 22 Sep 2026 01:00:00 +0000

Type Values Removed Values Added
Description Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler. The handler compares the request path against the layout directory name as text, while the lookup that follows canonicalises it. A doubled slash, a dot segment, a percent-encoded slash, or a different capitalisation on a case-insensitive filesystem therefore misses the guard. The handler is off by default, enabled with auto_page. The layout wrapping every page is already public, so this discloses one of the application's other layouts.
Title Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler
Weaknesses CWE-41
References

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: CPANSec

Published:

Updated: 2026-09-23T19:45:35.340Z

Reserved: 2026-09-18T15:05:23.319Z

Link: CVE-2026-93709

cve-icon Vulnrichment

Updated: 2026-09-23T18:34:24.837Z

cve-icon NVD

Status : Deferred

Published: 2026-09-22T01:16:55.610

Modified: 2026-09-23T20:17:23.067

Link: CVE-2026-93709

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-23T21:45:02Z

Weaknesses
  • CWE-41

    Improper Resolution of Path Equivalence