CVE-2026-15743: CWE-524 Use of Cache Containing Sensitive Information
Description
CVE-2026-15743 affects Catalyst::Plugin::Static::Simple for Perl versions up to 0.38. The plugin marks HTTP responses as publicly cacheable by always setting the Cache-Control header to "public" in the _serve_static method, ignoring configuration to disable caching. This behavior can cause sensitive information to be stored in shared caches and potentially served to unauthorized users, including those sending requests with Authorization headers.
CVSS v3.1
Score 5.7medium
Affected software
pkg:github/Catalyst-Plugin-Static-SimpleRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Catalyst::Plugin::Static::Simple versions through 0.38 for Perl have a vulnerability where the _serve_static method unconditionally sets the Cache-Control header to "public". This instructs proxies and shared caches to store the response, which may contain sensitive information. Attempts to disable caching by setting the expires time to "0" are ignored, leading to potential exposure of sensitive data to other users via shared caches.
Potential Impact
Sensitive information may be cached in shared proxy caches and subsequently served to unauthorized users, including those making authenticated requests. This can lead to unintended data disclosure. The vulnerability does not affect integrity or availability but impacts confidentiality.
Mitigation Recommendations
No official patch or fix is currently available. Users should avoid using affected versions or implement custom workarounds to override the Cache-Control header behavior. Monitor vendor advisories for updates regarding remediation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CPANSec
- Date Reserved
- 2026-07-14T14:24:29.805Z
- State
- PUBLISHED
Threat ID: 6a8745f0acd9273b49fa84a8
Added to database: 08/20/2026, 18:22:40 UTC
Last enriched: 09/11/2026, 04:18:28 UTC
Last updated: 10/05/2026, 06:48:14 UTC
Views: 74
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