CVE-2026-41901

CRITICALNVD 9.09.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.0 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 66% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.0
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.0Exploit: NoneExposed: 0

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

Thymeleaf is a server-side Java template engine for web and standalone environments. Prior to 3.1.5.RELEASE, a security bypass vulnerability exists in the expression execution mechanisms of Thymeleaf. Although the library provides mechanisms to avoid the execution of potentially dangerous expressions in some specific sandboxed (restricted) contexts, it fails to properly neutralize specific constructs that allow this kind of expressions to be executed. If an application developer passes to the template engine unsanitized variables that contain such expressions, and these values are used in sandboxed contexts inside the templates, these expressions can be executed achieving Server-Side Template Injection (SSTI). This vulnerability is fixed in 3.1.5.RELEASE.

CVSS v3
9.0
EG Score
9.0(medium)
EPSS
34.4%
KEV
Not listed

Published

May 12, 2026

Last Modified

May 13, 2026

Advisory Details (1)

Auto-updated May 12, 2026
Patch available. Sources: github.
github Patch Available

Improper recognition of unauthorized syntax patterns in sandboxed Thymeleaf expressions · Advisory · thymeleaf/thymeleaf · GitHub

https://github.com/thymeleaf/thymeleaf/security/advisories/GHSA-c9ph-gxww-7744

Affected Packages

(3 across 1 ecosystem)
Maven(3)
PackageVulnerable rangeFixed inDependents
org.thymeleaf:thymeleaf1.0.0 ... m1 (82 versions)3.1.5.RELEASE—
org.thymeleaf:thymeleaf-spring53.0.10.RELEASE ... 3.1.4.RELEASE (23 versions)3.1.5.RELEASE—
org.thymeleaf:thymeleaf-spring63.1.0.M1 ... 3.1.4.RELEASE (10 versions)3.1.5.RELEASE—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 63× 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 161 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-41901?
CVE-2026-41901 is a critical vulnerability published on May 12, 2026. Thymeleaf is a server-side Java template engine for web and standalone environments. Prior to 3.1.5.RELEASE, a security bypass vulnerability exists in the expression execution mechanisms of Thymeleaf. Although the library provides mechanisms to avoid the execution of potentially dangerous…
When was CVE-2026-41901 disclosed?
CVE-2026-41901 was first published in the National Vulnerability Database on May 12, 2026, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41901 actively exploited?
CVE-2026-41901 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 34.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-41901?
CVE-2026-41901 has a CVSS v3 base score of 9.0 (NVD).
How do I remediate CVE-2026-41901?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41901, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-41901

Explore →

Is Your Infrastructure Affected by CVE-2026-41901?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs