CVE-2026-41293

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 1.7%, top 24% 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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.7%CVSS: 9.8Exploit: None knownExposed services: Not assessed

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
9.8CRITICALmedium confidence
EG Risk
60
EG Risk 60/100

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
Severity98% × 45%
Exploitation2% × 40%
Automatability100% × 15%
EPSS PROB
1.7%
EPSS %ILE
76th
KEV
Not listed

Published

May 12, 2026

Last Modified

September 17, 2026

Advisory Details (2)

Auto-updated Oct 9, 2026
Patch available.
generic

Pony Mail

https://lists.apache.org/thread/qwg0q16z7xkb2qrr853wdll5531mvl1r
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

Vendor Advisories for CVE-2026-41293(15)

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

Patch Availability(7)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntutomcat9-user (9.0.16-3ubuntu0.18.04.2+esm8) @ bionic2026-09-17ubuntu
ubuntutomcat11-user (11.0.18-1ubuntu0.1~esm1) @ resolute2026-09-17ubuntu
redhattomcat9-1:9.0.120-1.el10_02026-09-14redhat
redhattomcat-1:10.1.49-1.el10_02026-09-14redhat
redhattomcat-coyote2026-07-22redhat
redhatjws6-tomcat-0:10.1.49-15.redhat_00013.1.el9jws2026-07-22redhat
redhatjws7-tomcat-0:11.0.21-5.redhat_00004.1.el9jws2026-07-14redhat

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

(13 across 5 ecosystems)
Maven(4)
PackageVulnerable rangeFix by version rangeDependents
org.apache.tomcat.embed:tomcat-embed-core11.0.0 ... 11.0.9 (42 versions)
  • 8.5.0 up to 9.0.118: fixed in 9.0.118
  • 10.1.0-M1 up to 10.1.55: fixed in 10.1.55
  • 11.0.0-M1 up to 11.0.22: fixed in 11.0.22
—
org.apache.tomcat:tomcat11.0.0 ... 11.0.9 (42 versions)
  • 8.5.0 up to 9.0.118: fixed in 9.0.118
  • 10.1.0-M1 up to 10.1.55: fixed in 10.1.55
  • 11.0.0-M1 up to 11.0.22: fixed in 11.0.22
—
org.apache.tomcat:tomcat-catalina11.0.0 ... 11.0.9 (42 versions)
  • every version up to 9.0.118: fixed in 9.0.118
  • 10.1.0-M1 up to 10.1.55: fixed in 10.1.55
  • 11.0.0-M1 up to 11.0.22: fixed in 11.0.22
—
org.apache.tomcat:tomcat-coyote11.0.0 ... 11.0.9 (42 versions)
  • 8.5.0 up to 9.0.118: fixed in 9.0.118
  • 10.1.0-M1 up to 10.1.55: fixed in 10.1.55
  • 11.0.0-M1 up to 11.0.22: fixed in 11.0.22
—
Debian:13(3)
PackageVulnerable rangeFix by version rangeDependents
tomcat1010.1.40-1 ... 10.1.55-1~deb12u1 (8 versions)
  • every version up to 10.1.55-1~deb13u1: fixed in 10.1.55-1~deb13u1
—
tomcat1111.0.11-1 ... 11.0.6-1 (6 versions)
  • every version up to 11.0.22-1~deb13u1: fixed in 11.0.22-1~deb13u1
—
tomcat9—
  • every version up to 9.0.70-2: fixed in 9.0.70-2
—
Debian:14(3)
PackageVulnerable rangeFix by version rangeDependents
tomcat1010.1.40-1 ... 10.1.55-1~deb13u1 (9 versions)
  • every version up to 10.1.55-1: fixed in 10.1.55-1
—
tomcat1111.0.11-1 ... 11.0.6-1 (7 versions)
  • every version up to 11.0.22-1: fixed in 11.0.22-1
—
tomcat9—
  • every version up to 9.0.70-2: fixed in 9.0.70-2
—
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
tomcat1010.1.10-1 ... 10.1.9-1 (33 versions)
  • every version up to 10.1.55-1~deb12u1: fixed in 10.1.55-1~deb12u1
—
tomcat9—
  • every version up to 9.0.70-2: fixed in 9.0.70-2
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
tomcat99.0.107-0+deb11u1 ... 9.0.95-1 (34 versions)
  • every version up to 9.0.118-0+deb11u1: fixed in 9.0.118-0+deb11u1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 26× 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 276 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

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 on May 12, 2026, with the most recent update on September 17, 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 1.7% probability of exploitation in the next 30 days (76th percentile of EPSS-scored CVEs).
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?
A fix for CVE-2026-41293 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-41293 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-41293

Explore →

Is Your Infrastructure Affected by CVE-2026-41293?

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

Book a Demo →Browse All CVEs