CVE-2026-13593: GTERMARS CSS::Minifier::XS · Memory Leak
Affects GTERMARS CSS::Minifier::XSSource CVE Database V5
Not known to be exploited · CVSS 6.5 Medium : upgrade to 0.14 when convenient.
Data as of 12 Nov 2026, 23:24 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 0.14
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 29 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Upgrade CSS::Minifier::XS and CSS-Minifier-XS to 0.14.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| GTERMARSCSS::Minifier::XS | Affected
| Fixed in
|
GitHubCSS-Minifier-XSpkg:github/CSS-Minifier-XSOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, users should consider avoiding minifying CSS documents that consist solely of removable characters or implement external memory management workarounds.
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.