Description
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: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; 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 TLS to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in 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 only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 3.7 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N).
Published: 2026-10-20
Score: 3.7 Low
EPSS: < 1% Very Low
KEV: No
Impact: Data Integrity Compromise
Action: Patch
AI Analysis

Impact

A flaw in the Java Secure Socket Extension (JSSE) component allows an attacker who can establish TLS connections to send malformed data to exposed APIs. The defect stems from improper handling of cryptographic functions (CWE‑295, CWE‑358). When exploited, the attacker can update, insert, or delete data that is otherwise protected by Oracle Java SE or GraalVM products; the vulnerability does not affect confidentiality or availability but solely permits integrity manipulation of accessed data.

Affected Systems

Oracle Corporation’s Java SE and GraalVM families are affected. Vulnerable Java SE releases include 8u503, 8u503‑perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, and 27. Oracle GraalVM for JDK versions 17.0.20.1 and 21.0.12.1, and Oracle GraalVM Enterprise Edition 21.3.19.1.1 also suffer from the defect.

Risk and Exploitability

The CVSS v3.1 base score of 3.7 reflects a low severity that only impacts integrity. EPSS is below 1 % and the flaw is not listed in CISA’s KEV catalog. Based on the description, the likely attack vector is an unauthenticated network attacker who can initiate TLS sessions to the vulnerable JSSE APIs, typically via a web service. The attacker does not need prior authentication and can deliver malicious payloads over TLS, leading to unauthorized data modification.

Generated by OpenCVE AI on October 24, 2026 at 04:22 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the security patch released in Oracle’s CPU Oct 2026 advisory to all affected Java SE and GraalVM versions.
  • Restrict external network traffic to the TLS APIs of the vulnerable products so that only trusted hosts or internal networks can reach them.
  • Enforce strict input validation and authorization checks on any API that processes TLS data, ensuring that only authenticated and authorized actions can modify persistent data.

Generated by OpenCVE AI on October 24, 2026 at 04:22 UTC.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4861-1 openjdk-17 security update
History

Sat, 24 Oct 2026 03:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-295
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 23 Oct 2026 00:45:00 +0000

Type Values Removed Values Added
First Time appeared Oracle graalvm Enterprise Edition
Oracle oracle Java Se
Vendors & Products Oracle graalvm Enterprise Edition
Oracle oracle Java Se

Thu, 22 Oct 2026 16:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20
CWE-285

Thu, 22 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Title Unauthenticated TLS Data Modification Vulnerability in Oracle Java SE and GraalVM openjdk: Enhance TLS Extensions (Oracle CPU 2026-10)
Weaknesses CWE-358
References
Metrics threat_severity

None

 threat_severity

Low

Wed, 21 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Title Unauthenticated TLS Data Modification Vulnerability in Oracle Java SE and GraalVM
Weaknesses CWE-20
CWE-285

Tue, 20 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Description 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: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; 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 TLS to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in 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 only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 3.7 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N).
First Time appeared Oracle
Oracle graalvm
Oracle graalvm For Jdk
Oracle java Se
CPEs cpe:2.3:a:oracle:graalvm:21.3.19.1.1:*:*:*:enterprise:*:*:*
cpe:2.3:a:oracle:graalvm_for_jdk:17.0.20.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:graalvm_for_jdk:21.0.12.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:11.0.32.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:17.0.20.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:21.0.12.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:25.0.4.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:27:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:8u503:*:*:*:*:*:*:*
cpe:2.3:a:oracle:java_se:8u503:*:*:*:enterprise_performance:*:*:*
Vendors & Products Oracle
Oracle graalvm
Oracle graalvm For Jdk
Oracle java Se
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N'}

Subscriptions

Oracle Graalvm Graalvm Enterprise Edition Graalvm For Jdk Java Se Oracle Java Se
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-24T03:03:30.706Z

Reserved: 2026-09-14T22:10:16.636Z

Link: CVE-2026-91461

cve-icon Vulnrichment

Updated: 2026-10-24T03:02:53.331Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:20:49.740

Modified: 2026-10-24T04:18:21.870

Link: CVE-2026-91461

cve-icon Redhat

Severity : Low

Publid Date: 2026-10-20T21:26:05Z

Links: CVE-2026-91461 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-24T04:30:08Z

Weaknesses
  • CWE-295

    Improper Certificate Validation

  • CWE-358

    Improperly Implemented Security Check for Standard