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TI-2026-76843 Aliases CVE-2026-101296GHSA-5q2g-877c-9cwh

Apache Tomcat JNDIRealm accepts wrong passwords with non-GSSAPI SASL

Priority MEDIUM 42CWE-304Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Partial Red Hat: 1 fixed, 7 without a fix

Attack profile from CVSS 4.0 · CISA ADP. Fix status from CNA and Red Hat.

Summary

Apache Tomcat from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122, from 8.5.0 through 8.5.100 and from 7.0.0 through 7.0.109 is affected. When JNDIRealm uses a non-GSSAPI SASL mechanism, bind credential validation skips a critical authentication step (CWE-304), so logins succeed without the correct password. A remote attacker can authenticate this way with no privileges or user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

A missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was configured with with a non GSSAPI SASL authentication mechanism allowed attackers to authenticate without providing the correct password. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00627 50th percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 1 fixed, 7 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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 – 11.0.26; 10.1.0-M1 – 10.1.60; 9.0.0.M1 – 9.0.122; 8.5.0 – 8.5.100; 7.0.0 – 7.0.109—No fix listedCNA
  • Apache Tomcat VendorApache Affected 11.0.0-M1 – 11.0.26; 10.1.0-M1 – 10.1.60; 9.0.0.M1 – 9.0.122; 8.5.0 – 8.5.100; 7.0.0 – 7.0.109 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*——Apache
  • cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* Versions — — ·Apache

Remediation

Upgrade Apache Tomcat to 11.0.27, 10.1.61 or 9.0.123. Red Hat Hardened Images is fixed by RHSA-2026:85926 and RHSA-2026:81365. Red Hat lists Red Hat Enterprise Linux 6, 7, 8, 9 and 10 and Red Hat JBoss Web Server 6 and 7 as affected without a fix and has no fix plan for them.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Red Hat 2 advisories

  • RHSA-2026:85926 Released 2026-10-20 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images tomcat10-10.1.61-0.1.hum1@noarch@public-hummingbird-aarch64-rpms, tomcat10-10.1.61-0.1.hum1@noarch@public-hummingbird-s390x-rpms, tomcat10-10.1.61-0.1.hum1@noarch@public-hummingbird-x86_64-rpms +28
  • RHSA-2026:81365 Released 2026-10-12 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images tomcat11-11.0.27-0.1.hum1@noarch@public-hummingbird-aarch64-rpms, tomcat11-11.0.27-0.1.hum1@noarch@public-hummingbird-s390x-rpms, tomcat11-11.0.27-0.1.hum1@noarch@public-hummingbird-x86_64-rpms +28

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet
Red Hat Enterprise Linux 6AffectedNo fix yet
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux 8AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat JBoss Web Server 6AffectedNo fix yet
Red Hat JBoss Web Server 7AffectedNo fix yet
Red Hat Hardened ImagesFixed RHSA-2026:81365, RHSA-2026:85926
Not affected: 2 products
  • Red Hat Hardened Images
  • Red Hat JBoss Web Server 5

Timeline

  1. 2026-10-20 Threatist record created from CVE-2026-101296
  2. 2026-10-20 Alias added: GHSA-5q2g-877c-9cwh
  3. 2026-10-20 CVSS score added · CISA ADP
  4. 2026-10-20 CISA SSVC decision points changed
  5. 2026-10-21 CISA SSVC decision points changed
  6. 2026-10-21 Fix available: RHSA-2026:85926 · Red Hat
  7. 2026-10-21 Fix available: RHSA-2026:81365 · Red Hat
  8. 2026-10-21 Fix available: Red Hat Hardened Images · Red Hat
  9. 2026-10-21 CVSS score added · Red Hat
  10. 2026-10-21 Affected versions changed · Red Hat
  11. 2026-10-22 Priority changed: LOW → MEDIUM
  12. 2026-10-25 EPSS moved to the below the 50th percentile
  13. 2026-10-30 EPSS moved to the 50th–90th percentile
  14. 2026-11-04 Affected versions changed · Red Hat

References

Advisory 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-2024-30292 Apache OFBiz: Confused controller-view authorization logic (forced browsing) KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-26062 Apache OFBiz: Unauthenticated endpoint could allow execution of screen rendering code KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-21190 Apache OFBiz: Path traversal leading to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-18186 Apache HugeGraph-Server: Command execution in gremlin KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-25106 Deserialization of untrusted data in Apache ActiveMQ KEVCVSS 3.1CRITICAL 10.0
See all 4053 →

Sources

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