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TI-2026-46786 Aliases CVE-2026-65637GHSA-f525-44xv-f2qj

Apache Tomcat: HTTP/2 no-authority bypass of strict SNI validation - CVE-2026-32990 fix incomplete

Priority MEDIUM 50CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 10 fixed, 4 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat.

Summary

Improper Input Validation vulnerability in Apache Tomcat due to incomplete fix for CVE-2026-32990. This issue affects Apache Tomcat: from 11.0.20 through 11.0.24, from 10.1.53 through 10.1.57, from 9.0.115 through 9.0.120. Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00751 55th percentileScored 2026-11-07
Fix Partial org.apache.tomcat:tomcat-coyote (Maven): 11.0.25, 10.1.59, 9.0.121org.apache.tomcat.embed:tomcat-embed-core (Maven): 11.0.25, 10.1.59, 9.0.121Red Hat: 9 advisoriesRed Hat: 10 fixed, 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Tomcat11.0.20 – 11.0.24; 10.1.53 – 10.1.57; 9.0.115 – 9.0.120—No fix listedCNA
—org.apache.tomcat:tomcat-coyote (Maven)11.0.20 to before 11.0.2511.0.25Patch availableGHSA-f525-44xv-f2qj
—org.apache.tomcat:tomcat-coyote (Maven)10.1.53 to before 10.1.5910.1.59Patch availableGHSA-f525-44xv-f2qj
—org.apache.tomcat:tomcat-coyote (Maven)9.0.115 to before 9.0.1219.0.121Patch availableGHSA-f525-44xv-f2qj
—org.apache.tomcat.embed:tomcat-embed-core (Maven)11.0.20 to before 11.0.2511.0.25Patch availableGHSA-f525-44xv-f2qj
—org.apache.tomcat.embed:tomcat-embed-core (Maven)10.1.53 to before 10.1.5910.1.59Patch availableGHSA-f525-44xv-f2qj
—org.apache.tomcat.embed:tomcat-embed-core (Maven)9.0.115 to before 9.0.1219.0.121Patch availableGHSA-f525-44xv-f2qj
  • Apache Tomcat VendorApache Affected 11.0.20 – 11.0.24; 10.1.53 – 10.1.57; 9.0.115 – 9.0.120 Fixed in — No fix listed CNA
  • org.apache.tomcat:tomcat-coyote (Maven) Vendor— Affected 11.0.20 to before 11.0.25 Fixed in 11.0.25 Patch available GHSA-f525-44xv-f2qj
  • org.apache.tomcat:tomcat-coyote (Maven) Vendor— Affected 10.1.53 to before 10.1.59 Fixed in 10.1.59 Patch available GHSA-f525-44xv-f2qj
  • org.apache.tomcat:tomcat-coyote (Maven) Vendor— Affected 9.0.115 to before 9.0.121 Fixed in 9.0.121 Patch available GHSA-f525-44xv-f2qj
  • org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 11.0.20 to before 11.0.25 Fixed in 11.0.25 Patch available GHSA-f525-44xv-f2qj
  • org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 10.1.53 to before 10.1.59 Fixed in 10.1.59 Patch available GHSA-f525-44xv-f2qj
  • org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 9.0.115 to before 9.0.121 Fixed in 9.0.121 Patch available GHSA-f525-44xv-f2qj

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*9.0.115 to before 9.0.121; 10.1.53 to before 10.1.58; 11.0.20 to before 11.0.25VulnerableApache
  • cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* Versions 9.0.115 to before 9.0.121; 10.1.53 to before 10.1.58; 11.0.20 to before 11.0.25 Vulnerable ·Apache

Remediation

  • Fix · GHSA-f525-44xv-f2qj org.apache.tomcat:tomcat-coyote (Maven) Fixed in 11.0.25 Advisory →
  • Fix · GHSA-f525-44xv-f2qj org.apache.tomcat:tomcat-coyote (Maven) Fixed in 10.1.59 Advisory →
  • Fix · GHSA-f525-44xv-f2qj org.apache.tomcat:tomcat-coyote (Maven) Fixed in 9.0.121 Advisory →
  • Fix · GHSA-f525-44xv-f2qj org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 11.0.25 Advisory →
  • Fix · GHSA-f525-44xv-f2qj org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 10.1.59 Advisory →
  • Fix · GHSA-f525-44xv-f2qj org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 9.0.121 Advisory →

Red Hat 9 advisories

  • RHSA-2026:93469 Released 2026-11-02 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream (v. 9) tomcat-1:9.0.121-1.el9_8, tomcat-admin-webapps-1:9.0.121-1.el9_8, tomcat-docs-webapp-1:9.0.121-1.el9_8 +5
  • RHSA-2026:92869 Released 2026-10-29 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream (v. 8) tomcat-1:9.0.121-1.el8_10, tomcat-admin-webapps-1:9.0.121-1.el8_10, tomcat-docs-webapp-1:9.0.121-1.el8_10 +5
  • RHSA-2026:92872 Released 2026-10-29 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) tomcat-1:9.0.121-1.el9_4, tomcat-admin-webapps-1:9.0.121-1.el9_4, tomcat-docs-webapp-1:9.0.121-1.el9_4 +5
Show 6 more Red Hat advisories
  • RHSA-2026:92871 Released 2026-10-29 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) tomcat-1:9.0.121-1.el9_2, tomcat-admin-webapps-1:9.0.121-1.el9_2, tomcat-docs-webapp-1:9.0.121-1.el9_2 +5
  • RHSA-2026:92870 Released 2026-10-29 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) tomcat-1:9.0.121-1.el9_6, tomcat-admin-webapps-1:9.0.121-1.el9_6, tomcat-docs-webapp-1:9.0.121-1.el9_6 +5
  • RHSA-2026:76952 Released 2026-10-07 · Red Hat rating Important
    Red Hat JBoss Web Server 7.0.2 release and security update
    • Red Hat JBoss Web Server 7.0 on RHEL 10 jws7-tomcat-11.0.21-7.redhat_00006.1.el10jws, jws7-tomcat-admin-webapps-11.0.21-7.redhat_00006.1.el10jws, jws7-tomcat-docs-webapp-11.0.21-7.redhat_00006.1.el10jws +7
    • Red Hat JBoss Web Server 7.0 on RHEL 8 jws7-tomcat-11.0.21-7.redhat_00006.1.el8jws, jws7-tomcat-admin-webapps-11.0.21-7.redhat_00006.1.el8jws, jws7-tomcat-docs-webapp-11.0.21-7.redhat_00006.1.el8jws +7
    • Red Hat JBoss Web Server 7.0 on RHEL 9 jws7-tomcat-11.0.21-7.redhat_00006.1.el9jws, jws7-tomcat-admin-webapps-11.0.21-7.redhat_00006.1.el9jws, jws7-tomcat-docs-webapp-11.0.21-7.redhat_00006.1.el9jws +7
  • RHSA-2026:76956 Released 2026-10-07 · Red Hat rating Important
    Red Hat JBoss Web Server 7.0.2 release and security update
    • Red Hat JBoss Web Server 7.0.2
  • RHSA-2026:63137 Released 2026-09-03 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images tomcat10-1:10.1.59-0.1.hum1@noarch@public-hummingbird-aarch64-rpms, tomcat10-1:10.1.59-0.1.hum1@noarch@public-hummingbird-x86_64-rpms, tomcat10-1:10.1.59-0.1.hum1@src +18
  • RHSA-2026:56039 Released 2026-08-18 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images tomcat11-1:11.0.25-0.1.hum1@noarch@public-hummingbird-aarch64-rpms, tomcat11-1:11.0.25-0.1.hum1@noarch@public-hummingbird-x86_64-rpms, tomcat11-1:11.0.25-0.1.hum1@src +18

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat JBoss Web Server 5AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:92869
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:93469
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:92871
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:92872
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:92870
Red Hat Hardened ImagesFixed RHSA-2026:56039, RHSA-2026:63137
Red Hat JBoss Web Server 7.0 on RHEL 10Fixed RHSA-2026:76952
Red Hat JBoss Web Server 7.0 on RHEL 8Fixed RHSA-2026:76952
Red Hat JBoss Web Server 7.0 on RHEL 9Fixed RHSA-2026:76952
Red Hat JBoss Web Server 7.0.2Fixed RHSA-2026:76956
Not affected: 3 products
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat JBoss Web Server 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-65637
  2. 2026-10-03 Alias added: GHSA-f525-44xv-f2qj
  3. 2026-10-07 Fix available: RHSA-2026:76952 · Red Hat
  4. 2026-10-07 Fix available: Red Hat JBoss Web Server 7.0 on RHEL 10, Red Hat JBoss Web Server 7.0 on RHEL 8, Red Hat JBoss Web Server 7.0 on RHEL 9 · Red Hat
  5. 2026-10-08 EPSS moved to the below the 50th percentile
  6. 2026-10-09 Fix available: RHSA-2026:76956 · Red Hat
  7. 2026-10-12 Fix available: Red Hat JBoss Web Server 7.0.2 · Red Hat
  8. 2026-10-30 EPSS moved to the 50th–90th percentile
  9. 2026-10-30 Fix available: RHSA-2026:92871 · Red Hat
  10. 2026-10-30 Fix available: RHSA-2026:92870 · Red Hat
  11. 2026-10-30 Fix available: Red Hat Enterprise Linux AppStream E4S (v.9.2), Red Hat Enterprise Linux AppStream E4S (v.9.4), Red Hat Enterprise Linux AppStream EUS (v.9.6) · Red Hat
  12. 2026-10-30 Fix available: RHSA-2026:92872 · Red Hat
  13. 2026-10-30 Fix available: RHSA-2026:92869 · Red Hat
  14. 2026-10-30 Fix available: Red Hat Enterprise Linux AppStream (v. 8) · Red Hat
  15. 2026-11-02 Fix available: RHSA-2026:93469 · Red Hat
  16. 2026-11-02 Fix available: Red Hat Enterprise Linux AppStream (v. 9) · Red Hat

References

Advisory 2

Other 10

  • TI-2025-18529 Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT KEVCVSS 3.1CRITICAL 10.0
  • TI-2020-01862 Improper privilege management in Apache Tomcat KEVCVSS 3.1CRITICAL 9.8
  • TI-2016-07192 Improper access control in Apache Tomcat KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-09342 Unrestricted file upload in Apache Tomcat KEVCVSS 3.1HIGH 8.1
  • TI-2017-09340 Unrestricted file upload in Apache Tomcat KEVCVSS 3.1HIGH 8.1
  • TI-2026-26741 Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor KEVCVSS 3.1HIGH 7.5
See all 273 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences