Vulnerability · Published Oct 20, 2026 · Assigned by oracle
CVE-2026-91333
Low 3.7
In plain English
A low-severity unsafe deserialization in Oracle Java SE from Oracle Corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)3.7Low
Exploit odds (30 days)0.3%top 81.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Vulnerability in Oracle Java SE (component: Security). Supported versions that are affected are Oracle Java SE: 21.0.12.1, 25.0.4.1 and 27. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE 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 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).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | java-21-openjdk | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:8 | java-21-openjdk | 1:21.0.13.0.9-1.1.el8 | ALSA-2026:88349 |
| AlmaLinux:9 | java-21-openjdk | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-demo | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-demo | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-demo-fastdebug | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-demo-fastdebug | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-demo-slowdebug | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-demo-slowdebug | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-devel | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-devel | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-devel-fastdebug | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-devel-fastdebug | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-devel-slowdebug | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-devel-slowdebug | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-fastdebug | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-fastdebug | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-headless | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-headless | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-headless-fastdebug | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-headless-fastdebug | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-headless-slowdebug | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-headless-slowdebug | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-javadoc | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-javadoc | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-javadoc-zip | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-javadoc-zip | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-jmods | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-jmods | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-jmods-fastdebug | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-jmods-fastdebug | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-jmods-slowdebug | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-jmods-slowdebug | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-slowdebug | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-slowdebug | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-src | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-src | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-src-fastdebug | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-src-fastdebug | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-src-slowdebug | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-src-slowdebug | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-static-libs | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-static-libs | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-static-libs-fastdebug | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-static-libs-fastdebug | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-21-openjdk-static-libs-slowdebug | 1:21.0.13.0.9-1.2.el10.alma.1 | ALSA-2026:90504 |
| AlmaLinux:9 | java-21-openjdk-static-libs-slowdebug | 1:21.0.13.0.9-1.2.el9.alma.1 | ALSA-2026:88349 |
| AlmaLinux:10 | java-25-openjdk | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-crypto-adapter | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-crypto-adapter | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-crypto-adapter-fastdebug | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-crypto-adapter-fastdebug | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-crypto-adapter-slowdebug | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-crypto-adapter-slowdebug | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-demo | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-demo | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-demo-fastdebug | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-demo-fastdebug | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-demo-slowdebug | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-demo-slowdebug | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-devel | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-devel | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-devel-fastdebug | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-devel-fastdebug | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-devel-slowdebug | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-devel-slowdebug | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-fastdebug | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-fastdebug | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-headless | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-headless | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-headless-fastdebug | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-headless-fastdebug | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-headless-slowdebug | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-headless-slowdebug | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-javadoc | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-javadoc | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-javadoc-zip | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-javadoc-zip | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-jmods | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-jmods | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-jmods-fastdebug | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-jmods-fastdebug | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-jmods-slowdebug | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-jmods-slowdebug | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-slowdebug | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-slowdebug | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-src | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-src | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-src-fastdebug | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-src-fastdebug | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-src-slowdebug | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-src-slowdebug | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-static-libs | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-static-libs | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-static-libs-fastdebug | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-static-libs-fastdebug | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| AlmaLinux:10 | java-25-openjdk-static-libs-slowdebug | 1:25.0.5.0.8-1.0.el10.alma.1 | ALSA-2026:88347 |
| AlmaLinux:9 | java-25-openjdk-static-libs-slowdebug | 1:25.0.5.0.8-1.0.el9.alma.1 | ALSA-2026:88347 |
| Alpine:v3.23 | openjdk25 | 25.0.5.0.3_p1-r0 | ALPINE-CVE-2026-91333 |
| Alpine:v3.24 | openjdk25 | 25.0.5.0.3_p1-r0 | ALPINE-CVE-2026-91333 |
| Debian:13 | openjdk-21 | 21.0.13+9-1~deb13u2 | DEBIAN-CVE-2026-91333 |
| Debian:14 | openjdk-21 | 21.0.13+9-1 | DEBIAN-CVE-2026-91333 |
| Debian:13 | openjdk-25 | 25.0.5+8-1~deb13u1 | DEBIAN-CVE-2026-91333 |
| Debian:14 | openjdk-25 | 25.0.5+8-1 | DEBIAN-CVE-2026-91333 |
| Debian:14 | openjdk-27 | no fix listed | DEBIAN-CVE-2026-91333 |
| Rocky Linux:9 | java-25-openjdk | 1:25.0.5.0.8-1.0.el9_8 | RLSA-2026:88347 |
| Ubuntu:22.04:LTS | openjdk-17 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:24.04:LTS | openjdk-17 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:26.04:LTS | openjdk-17 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:26.10 | openjdk-17 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:26.04:LTS | openjdk-17-crac | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:26.10 | openjdk-17-crac | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:22.04:LTS | openjdk-18 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:22.04:LTS | openjdk-21 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:24.04:LTS | openjdk-21 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:26.04:LTS | openjdk-21 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:26.10 | openjdk-21 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:26.04:LTS | openjdk-21-crac | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:26.10 | openjdk-21-crac | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:22.04:LTS | openjdk-25 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:24.04:LTS | openjdk-25 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:26.04:LTS | openjdk-25 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:26.10 | openjdk-25 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:26.10 | openjdk-27 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:22.04:LTS | openjdk-8 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:24.04:LTS | openjdk-8 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:26.04:LTS | openjdk-8 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:26.10 | openjdk-8 | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:22.04:LTS | openjdk-lts | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:26.04:LTS | openjdk-lts | no fix listed | UBUNTU-CVE-2026-91333 |
| Ubuntu:26.10 | openjdk-lts | no fix listed | UBUNTU-CVE-2026-91333 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Oracle Corporation | Oracle Java SE | 21.0.12.125.0.4.127 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
References
- Oracle Advisory vendor-advisory