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TI-2026-79007 Aliases CVE-2026-91403GHSA-9h75-rf66-wh3r

Risky cryptographic algorithm use in Oracle Java SE JSSE component

Priority MEDIUM 47CWE-327Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · High · None
Fix status
Partial Red Hat: 8 fixed, 10 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-327.

Summary

Oracle Java SE 8u511, 8u511-perf, 11.0.33, 17.0.21, 21.0.13, 25.0.5 and 27.0.1, Oracle GraalVM for JDK 17.0.21 and 21.0.13, and Oracle GraalVM Enterprise Edition 21.3.20 are affected. A flaw in the JSSE component uses a risky cryptographic algorithm (CWE-327). An unauthenticated remote attacker over the network can create, delete or modify critical data, and gain unauthorized access to it.

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: JSSE). Supported versions that are affected are Oracle Java SE: 8u511, 8u511-perf, 11.0.33, 17.0.21, 21.0.13, 25.0.5, 27.0.1; Oracle GraalVM for JDK: 17.0.21 and 21.0.13; Oracle GraalVM Enterprise Edition: 21.3.20. Easily exploitable 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 creation, deletion or modification access to critical data or all Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data as well as unauthorized access to critical data or complete access to all 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 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00375 31st percentileScored 2026-11-07
Fix Partial Red Hat: 11 advisoriesRed Hat: 8 fixed, 10 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
OracleOracle Java SE8u511; 8u511-perf; 11.0.33; 17.0.21; 21.0.13; 25.0.5; 27.0.1—No fix listedCNA
OracleOracle GraalVM for JDK17.0.21; 21.0.13—No fix listedCNA
OracleOracle GraalVM Enterprise Edition21.3.20—No fix listedCNA
  • Oracle Java SE VendorOracle Affected 8u511; 8u511-perf; 11.0.33; 17.0.21; 21.0.13; 25.0.5; 27.0.1 Fixed in — No fix listed CNA
  • Oracle GraalVM for JDK VendorOracle Affected 17.0.21; 21.0.13 Fixed in — No fix listed CNA
  • Oracle GraalVM Enterprise Edition VendorOracle Affected 21.3.20 Fixed in — No fix listed CNA

Remediation

Red Hat fixes OpenJDK 11.0.33 ELS in RHSA-2026:94499 and RHSA-2026:95273, OpenJDK 17.0.21 in RHSA-2026:88353 and RHSA-2026:89916, OpenJDK 21.0.13 in RHSA-2026:88350 and RHSA-2026:88351, and OpenJDK 25.0.5 in RHSA-2026:88348 and RHSA-2026:90912. The sources list no fixed version for Oracle Java SE, Oracle GraalVM for JDK or Oracle GraalVM Enterprise Edition.

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

Red Hat 11 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-2026:94403 Released 2026-11-03 · Red Hat rating Critical
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images java-21-openjdk-1:21.0.13.0.9-0.1.hum1@aarch64, java-21-openjdk-1:21.0.13.0.9-0.1.hum1@s390x, java-21-openjdk-1:21.0.13.0.9-0.1.hum1@src +47
Show 8 more Red Hat advisories
  • RHSA-2026:94111 Released 2026-11-02 · Red Hat rating Critical
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images java-25-openjdk-portable-1:25.0.5.0.8-3.0.hum1@aarch64, java-25-openjdk-portable-1:25.0.5.0.8-3.0.hum1@s390x, java-25-openjdk-portable-1:25.0.5.0.8-3.0.hum1@src +31
  • RHSA-2026:94069 Released 2026-11-02 · Red Hat rating Critical
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images java-21-openjdk-portable-1:21.0.13.0.9-1.0.1.hum1@aarch64, java-21-openjdk-portable-1:21.0.13.0.9-1.0.1.hum1@s390x, java-21-openjdk-portable-1:21.0.13.0.9-1.0.1.hum1@src +31
  • RHSA-2026:90912 Released 2026-10-29 · Red Hat rating Critical
    OpenJDK 25.0.5 Security Update for Windows Builds
    • Temurin Build of OpenJDK 25.0.4.1
  • RHSA-2026:88348 Released 2026-10-29 · Red Hat rating Critical
    OpenJDK 25.0.5 Security Update for Portable Linux Builds
    • Red Hat Build of OpenJDK 25.0.5
  • RHSA-2026:88351 Released 2026-10-29 · Red Hat rating Critical
    OpenJDK 21.0.13 Security Update for Windows Builds
    • Red Hat Build of OpenJDK 21.0.13
  • RHSA-2026:88350 Released 2026-10-29 · Red Hat rating Critical
    OpenJDK 21.0.13 Security Update for Portable Linux Builds
    • Red Hat Build of OpenJDK 21.0.12.1
  • RHSA-2026:88353 Released 2026-10-27 · Red Hat rating Critical
    OpenJDK 17.0.21 Security Update for Portable Linux Builds
    • Red Hat Build of OpenJDK 17.0.21
  • RHSA-2026:89916 Released 2026-10-27 · Red Hat rating Critical
    OpenJDK 17.0.21 Security Update for Windows Builds
    • Red Hat Build of OpenJDK 17.0.20.1

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Exploit IntelligenceAffectedNo fix yet
Red Hat Enterprise Linux 10AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 8AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 9AffectedNo fix planned: Will not fix
Red Hat Hardened ImagesAffectedNo fix yet
Red Hat OpenShift AI (RHOAI)AffectedNo fix yet
Red Hat build of OpenJDK 1.8AffectedNo fix yet
Red Hat build of OpenJDK 11 ELSAffectedNo fix yet
OPENJDK ELS 11.0.33Fixed RHSA-2026:95273
Red Hat Build of OpenJDK 17.0.20.1Fixed RHSA-2026:89916
Red Hat Build of OpenJDK 17.0.21Fixed RHSA-2026:88353
Red Hat Build of OpenJDK 21.0.12.1Fixed RHSA-2026:88350
Red Hat Build of OpenJDK 21.0.13Fixed RHSA-2026:88351
Red Hat Build of OpenJDK 25.0.5Fixed RHSA-2026:88348
Red Hat Hardened ImagesFixed RHSA-2026:94069, RHSA-2026:94111, RHSA-2026:94403
Temurin Build of OpenJDK 25.0.4.1Fixed RHSA-2026:90912

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-91403
  2. 2026-10-22 Alias added: GHSA-9h75-rf66-wh3r
  3. 2026-10-23 CISA SSVC decision points changed
  4. 2026-10-23 Affected versions changed · Red Hat
  5. 2026-10-23 CVSS score added · Red Hat
  6. 2026-10-23 Weakness changed · CISA ADP
  7. 2026-10-23 CISA SSVC decision points changed
  8. 2026-10-24 Affected versions changed · Red Hat
  9. 2026-10-24 Weakness changed · CISA ADP
  10. 2026-10-27 Fix available: Red Hat Build of OpenJDK 17.0.21 · Red Hat
  11. 2026-10-29 Fix available: RHSA-2026:88353 · Red Hat
  12. 2026-10-29 Fix available: RHSA-2026:88348 · Red Hat
  13. 2026-10-29 Fix available: RHSA-2026:88351 · Red Hat
  14. 2026-10-29 Fix available: RHSA-2026:88350 · Red Hat
  15. 2026-10-29 Fix available: RHSA-2026:89916 · Red Hat
  16. 2026-10-29 Fix available: Red Hat Build of OpenJDK 17.0.20.1, Red Hat Build of OpenJDK 21.0.12.1, Red Hat Build of OpenJDK 21.0.13 +1 · Red Hat
  17. 2026-10-30 Fix available: RHSA-2026:90912 · Red Hat
  18. 2026-10-30 Fix available: Temurin Build of OpenJDK 25.0.4.1 · Red Hat
  19. 2026-11-05 Fix available: OPENJDK ELS 11.0.33 · Red Hat
  20. 2026-11-06 Fix available: Red Hat Hardened Images · Red Hat
  21. 2026-11-06 Fix available: RHSA-2026:94069 · Red Hat
  22. 2026-11-06 Fix available: RHSA-2026:94111 · Red Hat
  23. 2026-11-06 Fix available: RHSA-2026:95273 · Red Hat
  24. 2026-11-06 Fix available: RHSA-2026:94403 · Red Hat
  25. 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