CVE-2026-46917: Easily exploitable 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 ability to cause a partial denial of service (partial DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. in Oracle Corporation Oracle Java SE
CVE-2026-46917 is a vulnerability in Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition affecting the JSSE component. It allows an unauthenticated attacker with network access via TLS to cause a partial denial of service. The vulnerability affects specific versions of Oracle Java SE and GraalVM products. The CVSS 3.1 base score is 5.3, indicating a medium severity impact focused on availability. Exploitation requires supplying data to APIs in the JSSE component without using untrusted Java Web Start applications or applets. No known exploits are reported in the wild. Oracle has not explicitly stated a patch or fix in the advisory but recommends applying Critical Patch Updates promptly.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-46917) affects the JSSE component of Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. It allows an unauthenticated attacker with network access via TLS to cause a partial denial of service (availability impact) without requiring user interaction or privileges. The affected versions include Oracle Java SE 11.0.31, 17.0.19, 21.0.11, 25.0.3, 26.0.1; Oracle GraalVM for JDK 17.0.19 and 21.0.11; and Oracle GraalVM Enterprise Edition 21.3.18. The vulnerability is exploitable by supplying data to APIs in the JSSE component, excluding untrusted Java Web Start applications or applets. The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L, indicating network attack vector, low complexity, no privileges or user interaction required, and impact limited to availability. Oracle's July 2026 Critical Patch Update advisory references this vulnerability but does not explicitly confirm patch availability or remediation level for this specific issue. Customers are advised to apply Oracle's Critical Patch Updates promptly to mitigate this and other vulnerabilities.
Potential Impact
The vulnerability allows an unauthenticated attacker with network access via TLS to cause a partial denial of service on affected Oracle Java SE and GraalVM products. There is no impact on confidentiality or integrity. The partial denial of service could disrupt availability of services relying on the affected Java components. No known exploits in the wild have been reported.
Mitigation Recommendations
Oracle's July 2026 Critical Patch Update advisory includes this vulnerability among many others but does not explicitly confirm a specific patch or remediation level for CVE-2026-46917. Customers should review the advisory at https://www.oracle.com/security-alerts/cpujul2026.html and apply the relevant Critical Patch Updates promptly to address this and other vulnerabilities. Patch status is not yet confirmed for this specific vulnerability; therefore, check the vendor advisory regularly for updates on remediation. No alternative mitigations or workarounds are specified.
CVE-2026-46917: Easily exploitable 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 ability to cause a partial denial of service (partial DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. in Oracle Corporation Oracle Java SE
Description
CVE-2026-46917 is a vulnerability in Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition affecting the JSSE component. It allows an unauthenticated attacker with network access via TLS to cause a partial denial of service. The vulnerability affects specific versions of Oracle Java SE and GraalVM products. The CVSS 3.1 base score is 5.3, indicating a medium severity impact focused on availability. Exploitation requires supplying data to APIs in the JSSE component without using untrusted Java Web Start applications or applets. No known exploits are reported in the wild. Oracle has not explicitly stated a patch or fix in the advisory but recommends applying Critical Patch Updates promptly.
CVSS v3.1
Score 5.3medium
Affected software
pkg:maven/com.oracle.java/seRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-46917) affects the JSSE component of Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. It allows an unauthenticated attacker with network access via TLS to cause a partial denial of service (availability impact) without requiring user interaction or privileges. The affected versions include Oracle Java SE 11.0.31, 17.0.19, 21.0.11, 25.0.3, 26.0.1; Oracle GraalVM for JDK 17.0.19 and 21.0.11; and Oracle GraalVM Enterprise Edition 21.3.18. The vulnerability is exploitable by supplying data to APIs in the JSSE component, excluding untrusted Java Web Start applications or applets. The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L, indicating network attack vector, low complexity, no privileges or user interaction required, and impact limited to availability. Oracle's July 2026 Critical Patch Update advisory references this vulnerability but does not explicitly confirm patch availability or remediation level for this specific issue. Customers are advised to apply Oracle's Critical Patch Updates promptly to mitigate this and other vulnerabilities.
Potential Impact
The vulnerability allows an unauthenticated attacker with network access via TLS to cause a partial denial of service on affected Oracle Java SE and GraalVM products. There is no impact on confidentiality or integrity. The partial denial of service could disrupt availability of services relying on the affected Java components. No known exploits in the wild have been reported.
Mitigation Recommendations
Oracle's July 2026 Critical Patch Update advisory includes this vulnerability among many others but does not explicitly confirm a specific patch or remediation level for CVE-2026-46917. Customers should review the advisory at https://www.oracle.com/security-alerts/cpujul2026.html and apply the relevant Critical Patch Updates promptly to address this and other vulnerabilities. Patch status is not yet confirmed for this specific vulnerability; therefore, check the vendor advisory regularly for updates on remediation. No alternative mitigations or workarounds are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- oracle
- Date Reserved
- 2026-05-18T15:55:10.311Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.oracle.com/security-alerts/cpujul2026.html","vendor":"Oracle"}]
Threat ID: 6a5fe6bd9c2644c7f8cb0136
Added to database: 07/21/2026, 21:38:05 UTC
Last enriched: 07/30/2026, 04:50:42 UTC
Last updated: 07/31/2026, 19:24:47 UTC
Views: 24
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.