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TI-2026-77468 Aliases CVE-2026-91411GHSA-vhxj-84r5-67g5

Improper input validation in Oracle Java SE JGSS component

Priority LOW 28CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
None · Low · High
Fix status
Partial Red Hat: 4 fixed, 5 without a fix

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

Summary

Oracle Java SE 8u503, 8u503-perf and 11.0.32.1, Oracle GraalVM for JDK 17.0.20.1 and 21.0.12.1, and Oracle GraalVM Enterprise Edition 21.3.19.1.1 are affected. Improper input validation (CWE-20) in the JGSS component lets an unauthenticated remote attacker cause a hang or crash and modify some accessible data. Exploitation is difficult, and the flaw can be reached through a web service that passes data to the component's APIs, as well as through sandboxed Java Web Start applications and applets.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JGSS). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition as well as unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 6.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00267 18th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 4 fixed, 5 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
OracleOracle Java SE8u503; 8u503-perf; 11.0.32.1—No fix listedCNA
OracleOracle GraalVM for JDK17.0.20.1; 21.0.12.1—No fix listedCNA
OracleOracle GraalVM Enterprise Edition21.3.19.1.1—No fix listedCNA
  • Oracle Java SE VendorOracle Affected 8u503; 8u503-perf; 11.0.32.1 Fixed in — No fix listed CNA
  • Oracle GraalVM for JDK VendorOracle Affected 17.0.20.1; 21.0.12.1 Fixed in — No fix listed CNA
  • Oracle GraalVM Enterprise Edition VendorOracle Affected 21.3.19.1.1 Fixed in — No fix listed CNA

Remediation

Red Hat fixes the flaw in OpenJDK 11.0.33 ELS through RHSA-2026:94499, RHSA-2026:95273 and RHSA-2026:94520. Red Hat lists no fix planned for Red Hat Enterprise Linux 6 and no available fix for Red Hat Enterprise Linux 7, 8 and 9 and Red Hat build of OpenJDK 1.8. The sources list no fixed version for Oracle Java SE. The sources list no fixed version for Oracle GraalVM for JDK and Oracle GraalVM Enterprise Edition.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Red Hat 3 advisories

  • RHSA-2026:94499 Released 2026-11-05 · Red Hat rating Critical
    OpenJDK 11.0.33 ELS Security Update For Portable Linux Builds
    • OPENJDK ELS 11.0.33
  • RHSA-2026:95273 Released 2026-11-05 · Red Hat rating Critical
    OpenJDK 11.0.33 ELS Security Update for Windows Builds
    • OPENJDK ELS 11.0.33
  • RHSA-2026:94520 Released 2026-11-05 · Red Hat rating Important
    Java 11 OpenJDK ELS Security Update
    • Red Hat OpenJDK 11 ELS for RHEL 7 java-11-openjdk-1:11.0.33.0.10-1.el7_9, java-11-openjdk-debug-1:11.0.33.0.10-1.el7_9, java-11-openjdk-demo-1:11.0.33.0.10-1.el7_9 +15
    • Red Hat OpenJDK 11 ELS for RHEL 8 java-11-openjdk-1:11.0.33.0.10-1.el8, java-11-openjdk-demo-1:11.0.33.0.10-1.el8, java-11-openjdk-demo-fastdebug-1:11.0.33.0.10-1.el8 +20
    • Red Hat OpenJDK 11 ELS for RHEL 9 java-11-openjdk-1:11.0.33.0.10-1.el9, java-11-openjdk-demo-1:11.0.33.0.10-1.el9, java-11-openjdk-demo-fastdebug-1:11.0.33.0.10-1.el9 +20

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Oracle GraalVM Enterprise Edition, Oracle GraalVM for JDK, Oracle Java SE — oracle.com/security-alerts/cpuoct2026.html

    51 records Highest priority Priority LOW 51 LOW

    Other records, highest priority first

    • TI-2026-77455 Improper access control in Oracle Java SE and GraalVMPriority LOW 35
    • TI-2026-77105 Improper access control in Oracle Java SE networking componentPriority LOW 35
    • TI-2026-77828 Improper access control in Oracle Java SEPriority LOW 34
    Show all 51 records → Advisory →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux 8AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat build of OpenJDK 1.8AffectedNo fix yet
OPENJDK ELS 11.0.33Fixed RHSA-2026:95273
Red Hat OpenJDK 11 ELS for RHEL 7Fixed RHSA-2026:94520
Red Hat OpenJDK 11 ELS for RHEL 8Fixed RHSA-2026:94520
Red Hat OpenJDK 11 ELS for RHEL 9Fixed RHSA-2026:94520
Not affected: 7 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat Hardened Images
  • Red Hat build of OpenJDK 17
  • Red Hat build of OpenJDK 21
  • Red Hat build of OpenJDK 25

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-91411
  2. 2026-10-21 Alias added: GHSA-vhxj-84r5-67g5
  3. 2026-10-21 Affected versions changed · Red Hat
  4. 2026-10-21 CVSS score added · Red Hat
  5. 2026-10-22 Priority changed: MEDIUM → LOW
  6. 2026-10-23 Affected versions changed · Red Hat
  7. 2026-10-23 Weakness changed · CISA ADP
  8. 2026-10-23 CISA SSVC decision points changed
  9. 2026-11-06 Fix available: RHSA-2026:95273 · Red Hat
  10. 2026-11-06 Fix available: RHSA-2026:94520 · Red Hat
  11. 2026-11-06 Fix available: OPENJDK ELS 11.0.33, Red Hat OpenJDK 11 ELS for RHEL 7, Red Hat OpenJDK 11 ELS for RHEL 8 +1 · Red Hat
  12. 2026-11-06 Fix available: RHSA-2026:94499 · Red Hat

References

Advisory 1

  • TI-2026-34425 Improper privilege management in Oracle Payments KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-27421 Missing authentication in Oracle PeopleSoft Enterprise PeopleTools KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-17661 Improper access control in Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-38252 Improper authentication in Oracle Concurrent Processing KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-38151 Missing authentication in Oracle Identity Manager KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-07142 Code injection in Spring Framework KEVCVSS 3.1CRITICAL 9.8
See all 14200 →

Sources

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