CVE-2026-41293

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 1.3%, top 32% 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
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

Improper Input Validation vulnerability in Apache Tomcat.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 10.0.0-M1 through 10.0.27. Older, end of support versions may also be affected.

Users are recommended to upgrade to version [FIXED_VERSION], which fixes the issue.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
68.0%
KEV
Not listed

Published

May 12, 2026

Last Modified

May 15, 2026

Advisory Details (2)

Auto-updated Jun 21, 2026
No patch confirmed yet.
generic

oss-security - CVE-2026-41293: Apache Tomcat: HTTP/2 request headers not validated

http://www.openwall.com/lists/oss-security/2026/05/12/13
generic
https://lists.apache.org/thread/qwg0q16z7xkb2qrr853wdll5531mvl1r

Vendor Advisories for CVE-2026-41293(1)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntutomcat10-user (10.1.16-1ubuntu0.1~esm4) @ noble2026-06-28ubuntu
ubuntutomcat11-user (11.0.18-1ubuntu0.1~esm1) @ resolute2026-06-28ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 1 ecosystem)
Maven(3)
PackageVulnerable rangeFixed inDependents
org.apache.tomcat.embed:tomcat-embed-core11.0.0 ... 11.0.9 (42 versions)11.0.22—
org.apache.tomcat:tomcat11.0.0 ... 11.0.9 (42 versions)11.0.22—
org.apache.tomcat:tomcat-catalina11.0.0 ... 11.0.9 (42 versions)11.0.22—

Weakness Classification(1)

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

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 9× in last 7d / 91× 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 218 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 13:28 UTCEG score recompute
  16. 2026-06-28 13:28 UTCVendor advisory
  17. 2026-06-28 08:24 UTCEG score recompute
  18. 2026-06-28 08:24 UTCVendor advisory
  19. 2026-06-28 04:56 UTCEPSS rescore
  20. 2026-06-28 02:20 UTCEG score recompute
  21. 2026-06-28 02:20 UTCVendor advisory
  22. 2026-06-27 13:17 UTCEG score recompute
  23. 2026-06-27 13:17 UTCVendor advisory
  24. 2026-06-27 08:25 UTCEG score recompute
  25. 2026-06-27 08:25 UTCVendor advisory
Show 75 more
  1. 2026-06-27 03:08 UTCEPSS rescore
  2. 2026-06-26 20:55 UTCEG score recompute
  3. 2026-06-26 20:55 UTCVendor advisory
  4. 2026-06-26 04:02 UTCEG score recompute
  5. 2026-06-26 04:02 UTCVendor advisory
  6. 2026-06-25 22:02 UTCEG score recompute
  7. 2026-06-25 22:02 UTCVendor advisory
  8. 2026-06-25 13:49 UTCEPSS rescore
  9. 2026-06-25 13:49 UTCEPSS rescore
  10. 2026-06-24 14:05 UTCEPSS rescore
  11. 2026-06-23 21:33 UTCEPSS rescore
  12. 2026-06-22 14:25 UTCEPSS rescore
  13. 2026-06-22 14:25 UTCEPSS rescore
  14. 2026-06-21 14:56 UTCEPSS rescore
  15. 2026-06-21 14:56 UTCEPSS rescore
  16. 2026-06-21 01:59 UTCEPSS rescore
  17. 2026-06-19 19:25 UTCEPSS rescore
  18. 2026-06-18 17:52 UTCEPSS rescore
  19. 2026-06-18 17:52 UTCEPSS rescore
  20. 2026-06-17 17:53 UTCEPSS rescore
  21. 2026-06-17 05:14 UTCEG score recompute
  22. 2026-06-17 05:14 UTCVendor advisory
  23. 2026-06-17 00:10 UTCEG score recompute
  24. 2026-06-17 00:10 UTCVendor advisory
  25. 2026-06-16 17:52 UTCEPSS rescore
  26. 2026-06-16 11:45 UTCEG score recompute
  27. 2026-06-16 11:45 UTCVendor advisory
  28. 2026-06-16 06:42 UTCEG score recompute
  29. 2026-06-16 06:42 UTCVendor advisory
  30. 2026-06-15 17:49 UTCEPSS rescore
  31. 2026-06-15 06:00 UTCEG score recompute
  32. 2026-06-15 06:00 UTCVendor advisory
  33. 2026-06-15 02:10 UTCEG score recompute
  34. 2026-06-15 02:10 UTCVendor advisory
  35. 2026-06-14 22:21 UTCEG score recompute
  36. 2026-06-14 22:21 UTCVendor advisory
  37. 2026-06-14 18:28 UTCEG score recompute
  38. 2026-06-14 18:28 UTCVendor advisory
  39. 2026-06-14 14:24 UTCEG score recompute
  40. 2026-06-14 14:24 UTCVendor advisory
  41. 2026-06-14 10:28 UTCEG score recompute
  42. 2026-06-14 10:28 UTCVendor advisory
  43. 2026-06-14 06:34 UTCEG score recompute
  44. 2026-06-14 06:34 UTCVendor advisory
  45. 2026-06-14 00:57 UTCEG score recompute
  46. 2026-06-14 00:57 UTCVendor advisory
  47. 2026-06-13 23:00 UTCEPSS rescore
  48. 2026-06-13 09:22 UTCEG score recompute
  49. 2026-06-13 09:22 UTCVendor advisory
  50. 2026-06-13 05:31 UTCEG score recompute
  51. 2026-06-13 00:44 UTCEG score recompute
  52. 2026-06-13 00:44 UTCVendor advisory
  53. 2026-06-12 23:12 UTCEPSS rescore
  54. 2026-06-12 23:12 UTCEPSS rescore
  55. 2026-06-12 20:54 UTCEG score recompute
  56. 2026-06-12 20:54 UTCVendor advisory
  57. 2026-06-12 17:01 UTCEG score recompute
  58. 2026-06-12 17:01 UTCVendor advisory
  59. 2026-06-12 12:06 UTCEG score recompute
  60. 2026-06-12 12:06 UTCVendor advisory
  61. 2026-06-12 08:18 UTCEG score recompute
  62. 2026-06-12 08:18 UTCVendor advisory
  63. 2026-06-12 04:28 UTCEG score recompute
  64. 2026-06-12 04:28 UTCVendor advisory
  65. 2026-06-12 00:40 UTCEG score recompute
  66. 2026-06-12 00:40 UTCVendor advisory
  67. 2026-06-11 20:51 UTCEG score recompute
  68. 2026-06-11 20:51 UTCVendor advisory
  69. 2026-06-11 17:03 UTCEG score recompute
  70. 2026-06-11 17:03 UTCVendor advisory
  71. 2026-06-11 14:00 UTCEPSS rescore
  72. 2026-06-11 13:13 UTCEG score recompute
  73. 2026-06-11 13:13 UTCVendor advisory
  74. 2026-06-11 09:24 UTCEG score recompute
  75. 2026-06-11 09:24 UTCVendor advisory

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Frequently asked(5)

What is CVE-2026-41293?
CVE-2026-41293 is a critical vulnerability published on May 12, 2026. Improper Input Validation vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 10.0.0-M1 through 10.0.27. Older, end of support versions may also be affected. Users are recommended to…
When was CVE-2026-41293 disclosed?
CVE-2026-41293 was first published in the National Vulnerability Database on May 12, 2026, with the most recent update on May 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41293 actively exploited?
CVE-2026-41293 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 68.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-41293?
CVE-2026-41293 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-41293?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41293, 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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