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TI-2026-20898 Aliases CVE-2026-25854GHSA-9m3c-qcxr-9x87

Apache Tomcat: Occasionally open redirect

Priority LOW 28CWE-601Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
Low · Low · None
Fix status
Partial Red Hat: 13 fixed, 6 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-601.

Summary

Occasional URL redirection to untrusted Site ('Open Redirect') vulnerability in Apache Tomcat via the LoadBalancerDrainingValve. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M23 through 9.0.115, from 8.5.30 through 8.5.100. Other, unsupported versions may also be affected Users are recommended to upgrade to version 11.0.20, 10.1.53 or 9.0.116, which fix the issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00582 48th percentileScored 2026-11-07
Fix Partial org.apache.tomcat:tomcat-catalina (Maven): 9.0.116, 10.1.53, 11.0.20org.apache.tomcat:tomcat (Maven): 9.0.116, 10.1.53, 11.0.20+1 more productRed Hat: 10 advisoriesRed Hat: 13 fixed, 6 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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 – 11.0.18; 10.1.0-M1 – 10.1.52; 9.0.0.M23 – 9.0.115; 8.5.30 – 8.5.100—Patch availableCNA
—org.apache.tomcat:tomcat-catalina (Maven)8.5.30 to before 9.0.1169.0.116Patch availableGHSA-9m3c-qcxr-9x87
—org.apache.tomcat:tomcat-catalina (Maven)10.1.0-M1 to before 10.1.5310.1.53Patch availableGHSA-9m3c-qcxr-9x87
—org.apache.tomcat:tomcat-catalina (Maven)11.0.0-M1 to before 11.0.2011.0.20Patch availableGHSA-9m3c-qcxr-9x87
—org.apache.tomcat:tomcat (Maven)8.5.30 to before 9.0.1169.0.116Patch availableGHSA-9m3c-qcxr-9x87
—org.apache.tomcat:tomcat (Maven)10.1.0-M1 to before 10.1.5310.1.53Patch availableGHSA-9m3c-qcxr-9x87
—org.apache.tomcat:tomcat (Maven)11.0.0-M1 to before 11.0.2011.0.20Patch availableGHSA-9m3c-qcxr-9x87
—org.apache.tomcat.embed:tomcat-embed-core (Maven)8.5.30 to before 9.0.1169.0.116Patch availableGHSA-9m3c-qcxr-9x87
—org.apache.tomcat.embed:tomcat-embed-core (Maven)10.1.0-M1 to before 10.1.5310.1.53Patch availableGHSA-9m3c-qcxr-9x87
—org.apache.tomcat.embed:tomcat-embed-core (Maven)11.0.0-M1 to before 11.0.2011.0.20Patch availableGHSA-9m3c-qcxr-9x87
  • Apache Tomcat VendorApache Affected 11.0.0-M1 – 11.0.18; 10.1.0-M1 – 10.1.52; 9.0.0.M23 – 9.0.115; 8.5.30 – 8.5.100 Fixed in — Patch available CNA
  • org.apache.tomcat:tomcat-catalina (Maven) Vendor— Affected 8.5.30 to before 9.0.116 Fixed in 9.0.116 Patch available GHSA-9m3c-qcxr-9x87
  • org.apache.tomcat:tomcat-catalina (Maven) Vendor— Affected 10.1.0-M1 to before 10.1.53 Fixed in 10.1.53 Patch available GHSA-9m3c-qcxr-9x87
  • org.apache.tomcat:tomcat-catalina (Maven) Vendor— Affected 11.0.0-M1 to before 11.0.20 Fixed in 11.0.20 Patch available GHSA-9m3c-qcxr-9x87
  • org.apache.tomcat:tomcat (Maven) Vendor— Affected 8.5.30 to before 9.0.116 Fixed in 9.0.116 Patch available GHSA-9m3c-qcxr-9x87
  • org.apache.tomcat:tomcat (Maven) Vendor— Affected 10.1.0-M1 to before 10.1.53 Fixed in 10.1.53 Patch available GHSA-9m3c-qcxr-9x87
  • org.apache.tomcat:tomcat (Maven) Vendor— Affected 11.0.0-M1 to before 11.0.20 Fixed in 11.0.20 Patch available GHSA-9m3c-qcxr-9x87
  • org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 8.5.30 to before 9.0.116 Fixed in 9.0.116 Patch available GHSA-9m3c-qcxr-9x87
  • org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 10.1.0-M1 to before 10.1.53 Fixed in 10.1.53 Patch available GHSA-9m3c-qcxr-9x87
  • org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 11.0.0-M1 to before 11.0.20 Fixed in 11.0.20 Patch available GHSA-9m3c-qcxr-9x87

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*9.0.1 to before 9.0.116; 10.1.0 to before 10.1.53; 11.0.0 to before 11.0.20VulnerableApache
cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:*9.0.0 milestone23VulnerableApache
cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:*9.0.0 milestone24VulnerableApache
cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:*9.0.0 milestone25VulnerableApache
cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:*9.0.0 milestone26VulnerableApache
cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:*9.0.0 milestone27VulnerableApache
  • cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* Versions 9.0.1 to before 9.0.116; 10.1.0 to before 10.1.53; 11.0.0 to before 11.0.20 Vulnerable ·Apache
  • cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:* Versions 9.0.0 milestone23 Vulnerable ·Apache
  • cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:* Versions 9.0.0 milestone24 Vulnerable ·Apache
  • cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:* Versions 9.0.0 milestone25 Vulnerable ·Apache
  • cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:* Versions 9.0.0 milestone26 Vulnerable ·Apache
  • cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:* Versions 9.0.0 milestone27 Vulnerable ·Apache

Remediation

  • Fix · GHSA-9m3c-qcxr-9x87 org.apache.tomcat:tomcat-catalina (Maven) Fixed in 9.0.116 Advisory →
  • Fix · GHSA-9m3c-qcxr-9x87 org.apache.tomcat:tomcat-catalina (Maven) Fixed in 10.1.53 Advisory →
  • Fix · GHSA-9m3c-qcxr-9x87 org.apache.tomcat:tomcat-catalina (Maven) Fixed in 11.0.20 Advisory →
  • Fix · GHSA-9m3c-qcxr-9x87 org.apache.tomcat:tomcat (Maven) Fixed in 9.0.116 Advisory →
  • Fix · GHSA-9m3c-qcxr-9x87 org.apache.tomcat:tomcat (Maven) Fixed in 10.1.53 Advisory →
  • Fix · GHSA-9m3c-qcxr-9x87 org.apache.tomcat:tomcat (Maven) Fixed in 11.0.20 Advisory →
  • Fix · GHSA-9m3c-qcxr-9x87 org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 9.0.116 Advisory →
  • Fix · GHSA-9m3c-qcxr-9x87 org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 10.1.53 Advisory →
  • Fix · GHSA-9m3c-qcxr-9x87 org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 11.0.20 Advisory →

Red Hat 10 advisories

  • 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
  • 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
Show 7 more Red Hat advisories
  • 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-2026:26323 Released 2026-06-16 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream (v. 9) tomcat-1:9.0.117-1.el9_8, tomcat-admin-webapps-1:9.0.117-1.el9_8, tomcat-docs-webapp-1:9.0.117-1.el9_8 +5
  • RHSA-2026:25341 Released 2026-06-11 · Red Hat rating Important
    tomcat9 security update
    • Red Hat Enterprise Linux AppStream (v. 10) tomcat9-1:9.0.117-1.el10_2, tomcat9-admin-webapps-1:9.0.117-1.el10_2, tomcat9-docs-webapp-1:9.0.117-1.el10_2 +5
  • RHSA-2026:20405 Released 2026-05-26 · Red Hat rating Important
    Red Hat JBoss Web Server 6.2.3 release and security update
    • Red Hat JBoss Web Server 6.2 on RHEL 10 jws6-tomcat-10.1.49-13.redhat_00011.1.el10jws, jws6-tomcat-admin-webapps-10.1.49-13.redhat_00011.1.el10jws, jws6-tomcat-docs-webapp-10.1.49-13.redhat_00011.1.el10jws +7
    • Red Hat JBoss Web Server 6.2 on RHEL 8 jws6-tomcat-10.1.49-13.redhat_00011.1.el8jws, jws6-tomcat-admin-webapps-10.1.49-13.redhat_00011.1.el8jws, jws6-tomcat-docs-webapp-10.1.49-13.redhat_00011.1.el8jws +7
    • Red Hat JBoss Web Server 6.2 on RHEL 9 jws6-tomcat-10.1.49-13.redhat_00011.1.el9jws, jws6-tomcat-admin-webapps-10.1.49-13.redhat_00011.1.el9jws, jws6-tomcat-docs-webapp-10.1.49-13.redhat_00011.1.el9jws +7
  • RHSA-2026:20406 Released 2026-05-26 · Red Hat rating Important
    Red Hat JBoss Web Server 6.2.3 release and security update
    • Red Hat JBoss Web Server 6.2.3

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat JBoss Web Server 5AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:25341
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:68677
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:26323
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
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-2026:20405
Red Hat JBoss Web Server 6.2 on RHEL 8Fixed RHSA-2026:20405
Red Hat JBoss Web Server 6.2 on RHEL 9Fixed RHSA-2026:20405
Red Hat JBoss Web Server 6.2.3Fixed RHSA-2026:20406

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-25854
  2. 2026-10-03 Alias added: GHSA-9m3c-qcxr-9x87
  3. 2026-10-09 Fix available: RHSA-2026:20406 · Red Hat
  4. 2026-11-06 Fix available: Red Hat JBoss Web Server 6.2.3 · Red Hat

References

Advisory 3

Other 1

  • 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

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