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TI-2026-29896 Aliases CVE-2026-41293GHSA-r29c-68gh-xp6x

Apache Tomcat: HTTP/2 request headers not validated

Priority MEDIUM 52CWE-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: 17 fixed, 6 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. 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01705 77th percentileScored 2026-11-07
Fix Partial org.apache.tomcat.embed:tomcat-embed-core (Maven): 9.0.118, 10.1.55, 11.0.22org.apache.tomcat:tomcat (Maven): 9.0.118, 10.1.55, 11.0.22+1 more productRed Hat: 14 advisoriesRed Hat: 17 fixed, 6 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 Tomcat11.0.0-M1 – 11.0.21; 10.1.0-M1 – 10.1.54; 9.0.0.M1 – 9.0.117; 10.0.0-M1 – 10.0.27; 8.5.0 – 8.5.100—No fix listedCNA
—org.apache.tomcat.embed:tomcat-embed-core (Maven)8.5.0 to before 9.0.1189.0.118Patch availableGHSA-r29c-68gh-xp6x
—org.apache.tomcat.embed:tomcat-embed-core (Maven)10.1.0-M1 to before 10.1.5510.1.55Patch availableGHSA-r29c-68gh-xp6x
—org.apache.tomcat.embed:tomcat-embed-core (Maven)11.0.0-M1 to before 11.0.2211.0.22Patch availableGHSA-r29c-68gh-xp6x
—org.apache.tomcat:tomcat (Maven)8.5.0 to before 9.0.1189.0.118Patch availableGHSA-r29c-68gh-xp6x
—org.apache.tomcat:tomcat (Maven)10.1.0-M1 to before 10.1.5510.1.55Patch availableGHSA-r29c-68gh-xp6x
—org.apache.tomcat:tomcat (Maven)11.0.0-M1 to before 11.0.2211.0.22Patch availableGHSA-r29c-68gh-xp6x
—org.apache.tomcat:tomcat-coyote (Maven)8.5.0 to before 9.0.1189.0.118Patch availableGHSA-r29c-68gh-xp6x
—org.apache.tomcat:tomcat-coyote (Maven)10.1.0-M1 to before 10.1.5510.1.55Patch availableGHSA-r29c-68gh-xp6x
—org.apache.tomcat:tomcat-coyote (Maven)11.0.0-M1 to before 11.0.2211.0.22Patch availableGHSA-r29c-68gh-xp6x
  • Apache Tomcat VendorApache Affected 11.0.0-M1 – 11.0.21; 10.1.0-M1 – 10.1.54; 9.0.0.M1 – 9.0.117; 10.0.0-M1 – 10.0.27; 8.5.0 – 8.5.100 Fixed in — No fix listed CNA
  • org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 8.5.0 to before 9.0.118 Fixed in 9.0.118 Patch available GHSA-r29c-68gh-xp6x
  • org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 10.1.0-M1 to before 10.1.55 Fixed in 10.1.55 Patch available GHSA-r29c-68gh-xp6x
  • org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 11.0.0-M1 to before 11.0.22 Fixed in 11.0.22 Patch available GHSA-r29c-68gh-xp6x
  • org.apache.tomcat:tomcat (Maven) Vendor— Affected 8.5.0 to before 9.0.118 Fixed in 9.0.118 Patch available GHSA-r29c-68gh-xp6x
  • org.apache.tomcat:tomcat (Maven) Vendor— Affected 10.1.0-M1 to before 10.1.55 Fixed in 10.1.55 Patch available GHSA-r29c-68gh-xp6x
  • org.apache.tomcat:tomcat (Maven) Vendor— Affected 11.0.0-M1 to before 11.0.22 Fixed in 11.0.22 Patch available GHSA-r29c-68gh-xp6x
  • org.apache.tomcat:tomcat-coyote (Maven) Vendor— Affected 8.5.0 to before 9.0.118 Fixed in 9.0.118 Patch available GHSA-r29c-68gh-xp6x
  • org.apache.tomcat:tomcat-coyote (Maven) Vendor— Affected 10.1.0-M1 to before 10.1.55 Fixed in 10.1.55 Patch available GHSA-r29c-68gh-xp6x
  • org.apache.tomcat:tomcat-coyote (Maven) Vendor— Affected 11.0.0-M1 to before 11.0.22 Fixed in 11.0.22 Patch available GHSA-r29c-68gh-xp6x

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*8.5.0 – 8.5.100; 9.0.0 to before 9.0.118; 10.0.0 – 10.0.27; 10.1.0 to before 10.1.55; 11.0.0 to before 11.0.22VulnerableApache
  • cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* Versions 8.5.0 – 8.5.100; 9.0.0 to before 9.0.118; 10.0.0 – 10.0.27; 10.1.0 to before 10.1.55; 11.0.0 to before 11.0.22 Vulnerable ·Apache

Remediation

  • Fix · GHSA-r29c-68gh-xp6x org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 9.0.118 Advisory →
  • Fix · GHSA-r29c-68gh-xp6x org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 10.1.55 Advisory →
  • Fix · GHSA-r29c-68gh-xp6x org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 11.0.22 Advisory →
  • Fix · GHSA-r29c-68gh-xp6x org.apache.tomcat:tomcat (Maven) Fixed in 9.0.118 Advisory →
  • Fix · GHSA-r29c-68gh-xp6x org.apache.tomcat:tomcat (Maven) Fixed in 10.1.55 Advisory →
  • Fix · GHSA-r29c-68gh-xp6x org.apache.tomcat:tomcat (Maven) Fixed in 11.0.22 Advisory →
  • Fix · GHSA-r29c-68gh-xp6x org.apache.tomcat:tomcat-coyote (Maven) Fixed in 9.0.118 Advisory →
  • Fix · GHSA-r29c-68gh-xp6x org.apache.tomcat:tomcat-coyote (Maven) Fixed in 10.1.55 Advisory →
  • Fix · GHSA-r29c-68gh-xp6x org.apache.tomcat:tomcat-coyote (Maven) Fixed in 11.0.22 Advisory →

Red Hat 14 advisories

  • RHSA-2026:69259 Released 2026-09-21 · Red Hat rating Moderate
    tomcat update
    • Red Hat Enterprise Linux AppStream (v. 10) tomcat-1:10.1.49-4.el10_2, tomcat-admin-webapps-1:10.1.49-4.el10_2, tomcat-docs-webapp-1:10.1.49-4.el10_2 +5
  • RHSA-2026:68651 Released 2026-09-18 · Red Hat rating Moderate
    tomcat9 security update
    • Red Hat Enterprise Linux AppStream (v. 10) tomcat9-1:9.0.120-1.el10_2, tomcat9-admin-webapps-1:9.0.120-1.el10_2, tomcat9-docs-webapp-1:9.0.120-1.el10_2 +5
  • RHSA-2026:68677 Released 2026-09-17 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream (v. 8) tomcat-1:9.0.120-1.el8_10, tomcat-admin-webapps-1:9.0.120-1.el8_10, tomcat-docs-webapp-1:9.0.120-1.el8_10 +5
Show 11 more Red Hat advisories
  • RHSA-2026:68660 Released 2026-09-17 · Red Hat rating Moderate
    tomcat security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) tomcat-1:9.0.120-2.el9_8, tomcat-admin-webapps-1:9.0.120-2.el9_8, tomcat-docs-webapp-1:9.0.120-2.el9_8 +5
  • RHSA-2026:68659 Released 2026-09-17 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) tomcat-1:9.0.120-1.el9_6, tomcat-admin-webapps-1:9.0.120-1.el9_6, tomcat-docs-webapp-1:9.0.120-1.el9_6 +5
  • RHSA-2026:68678 Released 2026-09-17 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) tomcat-1:9.0.120-1.el9_2, tomcat-admin-webapps-1:9.0.120-1.el9_2, tomcat-docs-webapp-1:9.0.120-1.el9_2 +5
  • RHSA-2026:68679 Released 2026-09-17 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) tomcat-1:9.0.120-1.el9_4, tomcat-admin-webapps-1:9.0.120-1.el9_4, tomcat-docs-webapp-1:9.0.120-1.el9_4 +5
  • RHSA-2026:68680 Released 2026-09-17 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream E4S (v.8.8) tomcat-1:9.0.120-1.el8_8, tomcat-admin-webapps-1:9.0.120-1.el8_8, tomcat-docs-webapp-1:9.0.120-1.el8_8 +5
    • Red Hat Enterprise Linux AppStream TUS (v.8.8) tomcat-1:9.0.120-1.el8_8, tomcat-admin-webapps-1:9.0.120-1.el8_8, tomcat-docs-webapp-1:9.0.120-1.el8_8 +5
  • RHSA-2026:67163 Released 2026-09-14 · Red Hat rating Important
    tomcat9 security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) tomcat9-1:9.0.120-1.el10_0, tomcat9-admin-webapps-1:9.0.120-1.el10_0, tomcat9-docs-webapp-1:9.0.120-1.el10_0 +5
  • RHSA-2026:67164 Released 2026-09-14 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) tomcat-1:10.1.49-1.el10_0, tomcat-admin-webapps-1:10.1.49-1.el10_0, tomcat-docs-webapp-1:10.1.49-1.el10_0 +5
  • RHSA-2026:43401 Released 2026-07-22 · Red Hat rating Important
    Red Hat JBoss Web Server 6.2.4 release and security update
    • Red Hat JBoss Web Server 6.2 on RHEL 10 jws6-tomcat-10.1.49-15.redhat_00013.1.el10jws, jws6-tomcat-admin-webapps-10.1.49-15.redhat_00013.1.el10jws, jws6-tomcat-docs-webapp-10.1.49-15.redhat_00013.1.el10jws +7
    • Red Hat JBoss Web Server 6.2 on RHEL 8 jws6-tomcat-10.1.49-15.redhat_00013.1.el8jws, jws6-tomcat-admin-webapps-10.1.49-15.redhat_00013.1.el8jws, jws6-tomcat-docs-webapp-10.1.49-15.redhat_00013.1.el8jws +7
    • Red Hat JBoss Web Server 6.2 on RHEL 9 jws6-tomcat-10.1.49-15.redhat_00013.1.el9jws, jws6-tomcat-admin-webapps-10.1.49-15.redhat_00013.1.el9jws, jws6-tomcat-docs-webapp-10.1.49-15.redhat_00013.1.el9jws +7
  • RHSA-2026:43402 Released 2026-07-22 · Red Hat rating Important
    Red Hat JBoss Web Server 6.2.4 release and security update
    • Red Hat JBoss Web Server 6.2.4
  • RHSA-2026:39188 Released 2026-07-14 · Red Hat rating Important
    Red Hat JBoss Web Server 7.0.0 security release
    • Red Hat JBoss Web Server 7.0 on RHEL 10 jws7-tomcat-11.0.21-5.redhat_00004.1.el10jws, jws7-tomcat-admin-webapps-11.0.21-5.redhat_00004.1.el10jws, jws7-tomcat-docs-webapp-11.0.21-5.redhat_00004.1.el10jws +7
    • Red Hat JBoss Web Server 7.0 on RHEL 8 jws7-tomcat-11.0.21-5.redhat_00004.1.el8jws, jws7-tomcat-admin-webapps-11.0.21-5.redhat_00004.1.el8jws, jws7-tomcat-docs-webapp-11.0.21-5.redhat_00004.1.el8jws +7
    • Red Hat JBoss Web Server 7.0 on RHEL 9 jws7-tomcat-11.0.21-5.redhat_00004.1.el9jws, jws7-tomcat-admin-webapps-11.0.21-5.redhat_00004.1.el9jws, jws7-tomcat-docs-webapp-11.0.21-5.redhat_00004.1.el9jws +7
  • RHSA-2026:39189 Released 2026-07-14 · Red Hat rating Important
    Red Hat JBoss Web Server 7.0.0 security release
    • Red Hat JBoss Web Server 7.0.0

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix yet
Red Hat Enterprise Linux 8AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 9AffectedNo fix planned: Will not fix
Red Hat JBoss Web Server 5AffectedNo fix planned: Will not fix
Red Hat JBoss Web Server 6AffectedNo fix yet
Red Hat JBoss Web Server 7AffectedNo fix yet
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:68651, RHSA-2026:69259
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:68677
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:68660
Red Hat Enterprise Linux AppStream E4S (v.8.8)Fixed RHSA-2026:68680
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:68678
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:68679
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:67163, RHSA-2026:67164
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:68659
Red Hat Enterprise Linux AppStream TUS (v.8.8)Fixed RHSA-2026:68680
Red Hat JBoss Web Server 6.2 on RHEL 10Fixed RHSA-2026:43401
Red Hat JBoss Web Server 6.2 on RHEL 8Fixed RHSA-2026:43401
Red Hat JBoss Web Server 6.2 on RHEL 9Fixed RHSA-2026:43401
Red Hat JBoss Web Server 6.2.4Fixed RHSA-2026:43402
Red Hat JBoss Web Server 7.0 on RHEL 10Fixed RHSA-2026:39188
Red Hat JBoss Web Server 7.0 on RHEL 8Fixed RHSA-2026:39188
Red Hat JBoss Web Server 7.0 on RHEL 9Fixed RHSA-2026:39188
Red Hat JBoss Web Server 7.0.0Fixed RHSA-2026:39189
Not affected: 5 products
  • Red Hat Enterprise Linux 7
  • Red Hat Hardened Images
  • 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

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41293
  2. 2026-10-03 Alias added: GHSA-r29c-68gh-xp6x
  3. 2026-10-18 Affected versions changed · Red Hat
  4. 2026-10-23 Affected versions changed · Red Hat

References

Advisory 3

Other 13

  • 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