CVE-2026-13593

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-06-29. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
6.5
EG Score
6.5(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

June 29, 2026

Last Modified

June 30, 2026

Advisory Details (1)

Auto-updated Jun 29, 2026
No patch confirmed yet.
generic

Changes - metacpan.org

https://metacpan.org/release/GTERMARS/CSS-Minifier-XS-0.14/changes

Vendor Advisories for CVE-2026-13593(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 4 ecosystems)
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
perl-css-minifier-xs—0.16-r0—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libcss-minifier-xs-perl0.13-1, 0.14-1, 0.15-1——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libcss-minifier-xs-perl0.13-1, 0.14-1, 0.15-1——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libcss-minifier-xs-perl0.13-10.14-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 51× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 151 total refreshes for this CVE.

  1. 2026-09-11 14:52 UTCEPSS rescore
  2. 2026-09-11 09:36 UTCEPSS rescore
  3. 2026-09-10 09:34 UTCEPSS rescore
  4. 2026-09-08 22:00 UTCEPSS rescore
  5. 2026-09-07 16:01 UTCEPSS rescore
  6. 2026-09-06 14:40 UTCEG score recompute
  7. 2026-09-06 14:40 UTCGHSA enrichment
  8. 2026-09-06 13:47 UTCEPSS rescore
  9. 2026-09-04 05:06 UTCEPSS rescore
  10. 2026-09-02 14:11 UTCEPSS rescore
  11. 2026-09-01 13:53 UTCEPSS rescore
  12. 2026-09-01 04:39 UTCEPSS rescore
  13. 2026-08-30 19:17 UTCEPSS rescore
  14. 2026-08-30 18:30 UTCEG score recompute
  15. 2026-08-30 18:30 UTCGHSA enrichment
  16. 2026-08-30 01:21 UTCEPSS rescore
  17. 2026-08-28 21:40 UTCEPSS rescore
  18. 2026-08-27 22:46 UTCEG score recompute
  19. 2026-08-27 22:46 UTCGHSA enrichment
  20. 2026-08-27 14:24 UTCEPSS rescore
  21. 2026-08-25 13:48 UTCEPSS rescore
  22. 2026-08-24 12:40 UTCEG score recompute
  23. 2026-08-24 12:40 UTCGHSA enrichment
  24. 2026-08-23 08:29 UTCEG score recompute
  25. 2026-08-23 08:29 UTCGHSA enrichment
Show 75 more
  1. 2026-08-23 00:19 UTCEPSS rescore
  2. 2026-08-22 08:49 UTCEG score recompute
  3. 2026-08-22 08:49 UTCGHSA enrichment
  4. 2026-08-21 23:48 UTCEPSS rescore
  5. 2026-08-21 05:11 UTCEG score recompute
  6. 2026-08-21 05:11 UTCGHSA enrichment
  7. 2026-08-20 22:55 UTCEPSS rescore
  8. 2026-08-20 05:44 UTCEG score recompute
  9. 2026-08-20 05:44 UTCGHSA enrichment
  10. 2026-08-19 17:03 UTCEPSS rescore
  11. 2026-08-18 23:09 UTCEG score recompute
  12. 2026-08-18 23:09 UTCGHSA enrichment
  13. 2026-08-18 13:48 UTCEPSS rescore
  14. 2026-08-17 13:36 UTCEG score recompute
  15. 2026-08-17 13:36 UTCGHSA enrichment
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 14:10 UTCEG score recompute
  18. 2026-08-16 14:10 UTCGHSA enrichment
  19. 2026-08-16 02:14 UTCEPSS rescore
  20. 2026-08-15 14:44 UTCEG score recompute
  21. 2026-08-15 14:44 UTCGHSA enrichment
  22. 2026-08-15 01:30 UTCEPSS rescore
  23. 2026-08-14 15:17 UTCEG score recompute
  24. 2026-08-14 15:17 UTCGHSA enrichment
  25. 2026-08-13 22:00 UTCEPSS rescore
  26. 2026-08-13 15:51 UTCGHSA enrichment
  27. 2026-08-12 16:00 UTCEG score recompute
  28. 2026-08-12 16:00 UTCGHSA enrichment
  29. 2026-08-12 13:50 UTCEPSS rescore
  30. 2026-08-11 16:34 UTCEG score recompute
  31. 2026-08-11 16:34 UTCGHSA enrichment
  32. 2026-08-11 13:42 UTCEPSS rescore
  33. 2026-08-10 23:59 UTCEPSS rescore
  34. 2026-08-10 17:08 UTCGHSA enrichment
  35. 2026-08-09 16:36 UTCEG score recompute
  36. 2026-08-09 16:36 UTCGHSA enrichment
  37. 2026-08-09 13:46 UTCEPSS rescore
  38. 2026-08-08 17:11 UTCEG score recompute
  39. 2026-08-08 17:11 UTCGHSA enrichment
  40. 2026-08-08 16:37 UTCEPSS rescore
  41. 2026-08-07 17:45 UTCEG score recompute
  42. 2026-08-07 17:45 UTCGHSA enrichment
  43. 2026-08-06 18:19 UTCEG score recompute
  44. 2026-08-06 18:19 UTCGHSA enrichment
  45. 2026-08-06 13:46 UTCEPSS rescore
  46. 2026-08-05 19:17 UTCEPSS rescore
  47. 2026-08-05 18:53 UTCGHSA enrichment
  48. 2026-08-04 19:24 UTCEG score recompute
  49. 2026-08-04 19:24 UTCGHSA enrichment
  50. 2026-08-04 15:09 UTCEPSS rescore
  51. 2026-08-04 10:38 UTCEPSS rescore
  52. 2026-08-03 19:58 UTCEG score recompute
  53. 2026-08-03 19:58 UTCGHSA enrichment
  54. 2026-08-03 10:35 UTCEPSS rescore
  55. 2026-08-02 20:32 UTCEG score recompute
  56. 2026-08-02 20:32 UTCGHSA enrichment
  57. 2026-08-02 02:26 UTCEPSS rescore
  58. 2026-08-01 21:06 UTCEG score recompute
  59. 2026-08-01 21:06 UTCGHSA enrichment
  60. 2026-08-01 04:15 UTCEPSS rescore
  61. 2026-07-31 21:40 UTCGHSA enrichment
  62. 2026-07-30 22:13 UTCEG score recompute
  63. 2026-07-30 22:13 UTCGHSA enrichment
  64. 2026-07-30 16:27 UTCEPSS rescore
  65. 2026-07-30 01:30 UTCEPSS rescore
  66. 2026-07-29 22:37 UTCEG score recompute
  67. 2026-07-29 22:37 UTCGHSA enrichment
  68. 2026-07-28 19:43 UTCEG score recompute
  69. 2026-07-28 19:43 UTCGHSA enrichment
  70. 2026-07-28 15:36 UTCEPSS rescore
  71. 2026-07-27 16:54 UTCEG score recompute
  72. 2026-07-27 16:54 UTCGHSA enrichment
  73. 2026-07-27 14:13 UTCEPSS rescore
  74. 2026-07-26 14:54 UTCEPSS rescore
  75. 2026-07-26 14:54 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-13593?
CVE-2026-13593 is a medium vulnerability published on June 29, 2026. 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.
When was CVE-2026-13593 disclosed?
CVE-2026-13593 was first published in the National Vulnerability Database on June 29, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13593 actively exploited?
CVE-2026-13593 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 78.4% of all scored CVEs.
What is the CVSS score of CVE-2026-13593?
CVE-2026-13593 has a CVSS v3.1 base score of 6.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-13593?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13593, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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