CVE-2026-13593: CWE-401 Missing Release of Memory after Effective Lifetime in GTERMARS CSS::Minifier::XS
CSS::Minifier::XS versions before 0.14 for Perl have a memory leak when the entire document is minified away. The minify function has a memory leak when processing a document containing only characters to be removed, such as comments and whitespace.
AI Analysis
Technical Summary
CVE-2026-13593 describes a memory leak vulnerability (CWE-401) in the CSS::Minifier::XS Perl module versions prior to 0.14. The vulnerability occurs when the minify function processes CSS documents that consist solely of characters that are removed during minification, such as comments and whitespace. In this scenario, allocated memory is not properly released, leading to a leak. There is no CVSS score or detailed vendor advisory available, and no patch or remediation level has been confirmed.
Potential Impact
The vulnerability causes a memory leak during CSS minification of documents containing only removable characters. This can lead to increased memory consumption in applications using affected versions of CSS::Minifier::XS, potentially degrading performance or causing resource exhaustion in long-running processes. There is no indication of known exploits in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider avoiding minifying CSS documents that consist solely of removable characters or implement external memory management workarounds. Monitor vendor channels for updates regarding patches or official fixes.
CVE-2026-13593: CWE-401 Missing Release of Memory after Effective Lifetime in GTERMARS CSS::Minifier::XS
Description
CSS::Minifier::XS versions before 0.14 for Perl have a memory leak when the entire document is minified away. The minify function has a memory leak when processing a document containing only characters to be removed, such as comments and whitespace.
CVSS v3.1
Score 6.5medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-13593 describes a memory leak vulnerability (CWE-401) in the CSS::Minifier::XS Perl module versions prior to 0.14. The vulnerability occurs when the minify function processes CSS documents that consist solely of characters that are removed during minification, such as comments and whitespace. In this scenario, allocated memory is not properly released, leading to a leak. There is no CVSS score or detailed vendor advisory available, and no patch or remediation level has been confirmed.
Potential Impact
The vulnerability causes a memory leak during CSS minification of documents containing only removable characters. This can lead to increased memory consumption in applications using affected versions of CSS::Minifier::XS, potentially degrading performance or causing resource exhaustion in long-running processes. There is no indication of known exploits in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider avoiding minifying CSS documents that consist solely of removable characters or implement external memory management workarounds. Monitor vendor channels for updates regarding patches or official fixes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CPANSec
- Date Reserved
- 2026-06-29T06:55:43.347Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a42d3d027e9c7971972c78f
Added to database: 06/29/2026, 20:21:36 UTC
Last enriched: 06/29/2026, 20:52:56 UTC
Last updated: 06/30/2026, 01:04:25 UTC
Views: 6
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