Read the docs
TI-2026-76826 Aliases CVE-2026-80353GHSA-wv4g-r8pf-3wmw

Race condition in Apache Tomcat APR connector exposes Unix sockets

Priority LOW 37CWE-367Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 1 fixed, 4 without a fix

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

Summary

Apache Tomcat from 9.0.47 through 9.0.122 is affected. A time-of-check time-of-use race condition (CWE-367) when creating Unix domain sockets for the APR/Native connector lets an unauthorised local user access the socket. The earlier fix for CVE-2026-65183 only covered the NIO connector.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Time-of-check time-of-use (TOCTOU) race condition vulnerability in Apache Tomcat when creating unix domain sockets for the APR/Native connector allows an unauthorised local user to access the unix domain socket. The fix for CVE-2026-65183 only addressed the NIO connector. It did not address the same issue in the APR/Native connector. This issue affects Apache Tomcat: from 9.0.47 through 9.0.122. Users are recommended to upgrade to version 9.0.123, which fixes the issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00392 33rd percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 1 fixed, 4 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 Tomcat9.0.47 – 9.0.122—No fix listedCNA
  • Apache Tomcat VendorApache Affected 9.0.47 – 9.0.122 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 version 9.0.123, which fixes the issue. Red Hat Hardened Images are updated by RHSA-2026:85926 and RHSA-2026:81365. The sources list no fixed version for Red Hat Enterprise Linux 8, 9 and 10, or Red Hat JBoss Web Server 5.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

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: Low. Red Hat's page for this CVE →

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

Timeline

  1. 2026-10-20 Threatist record created from CVE-2026-80353
  2. 2026-10-20 Alias added: GHSA-wv4g-r8pf-3wmw
  3. 2026-10-21 Fix available: RHSA-2026:85926 · Red Hat
  4. 2026-10-21 Fix available: RHSA-2026:81365 · Red Hat
  5. 2026-10-21 Fix available: Red Hat Hardened Images · Red Hat
  6. 2026-10-21 CVSS score added · Red Hat
  7. 2026-10-22 Affected versions changed · Red Hat
  8. 2026-10-29 CVSS score added · CISA ADP
  9. 2026-10-29 CISA SSVC decision points changed

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