CVE-2026-91451
Reported by oracle · Published October 20, 2026
Vulnerability in Oracle Java SE (component: Networking). 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; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Easily exploitable 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 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 5.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| java-25-openjdk-crypto-adapter | errata.rockylinux.org | 1:25.0.5.0.8-1.0.el9_8.x86_64, 1:25.0.5.0.8-1.0.el9_8.s390x |
| java-25-openjdk-devel-debuginfo | errata.rockylinux.org | 1:25.0.5.0.8-1.0.el9_8.x86_64 |
| java-17-amazon-corretto-javadoc | Amazon Linux | 1:17.0.21.0.10-1.amzn2023.1, 1:17.0.21.0.10-1.amzn2.1 |
| java-25-openjdk-headless-debuginfo | errata.rockylinux.org | 1:25.0.5.0.8-1.0.el9_8.x86_64, 1:25.0.5.0.8-1.0.el9_8.aarch64 |
| java-25-openjdk-headless-slowdebug | errata.rockylinux.org | 1:25.0.5.0.8-1.0.el9_8.s390x, 1:25.0.5.0.8-1.0.el9_8.ppc64le |
| java-11-amazon-corretto-debugsymbols | Amazon Linux | 1:11.0.33.0.9-1.amzn2023 |
| java-25-openjdk-slowdebug | errata.rockylinux.org | 1:25.0.5.0.8-1.0.el9_8.x86_64, 1:25.0.5.0.8-1.0.el9_8.ppc64le |
| java-17-openjdk | errata.rockylinux.org | 1:17.0.21.0.9-2.1.el8_10.x86_64, 1:17.0.21.0.9-2.1.el8_10.src |
| java-25-openjdk-debugsource | errata.rockylinux.org | 1:25.0.5.0.8-1.0.el9_8.x86_64, 1:25.0.5.0.8-1.0.el9_8.ppc64le |
| java-25-openjdk-static-libs-slowdebug | errata.rockylinux.org | 1:25.0.5.0.8-1.0.el9_8.s390x, 1:25.0.5.0.8-1.0.el9_8.ppc64le |
| java-25-openjdk-devel | errata.rockylinux.org | 1:25.0.5.0.8-1.0.el9_8.ppc64le, 1:25.0.5.0.8-1.0.el9_8.aarch64 |
| java-25-openjdk-demo | errata.rockylinux.org | 1:25.0.5.0.8-1.0.el9_8.ppc64le |
53 more packages have a fixed version. See every fix in Lookup.
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Oracle Corporation | Oracle Java SE | 8u503, 8u503-perf, 11.0.32.1 |
| amazon:2023 | java-17-amazon-corretto-javadoc | 0 |
| amazon:2023 | java-11-amazon-corretto-debugsymbols | 0 |
| amazon:2023 | java-25-amazon-corretto-devel | 0 |
| amazon:2023 | java-1.8.0-amazon-corretto | 0 |
| amazon:2 | java-17-amazon-corretto-javadoc | 0 |
| amazon:2023 | java-17-amazon-corretto-headless | 0 |
| amazon:2023 | java-21-amazon-corretto-headless | 0 |
| amazon:2023 | java-21-amazon-corretto-devel | 0 |
| oracle | java_se | |
| amazon:2 | java-17-amazon-corretto | 0 |
| amazon:2023 | java-25-amazon-corretto-debugsymbols | 0 |
| amazon:2 | java-11-amazon-corretto-javadoc | 0 |
| amazon:2023 | java-21-amazon-corretto-jmods | 0 |
| amazon:2 | java-17-amazon-corretto-headless | 0 |
| amazon:2 | java-17-amazon-corretto-debugsymbols | 0 |
| amazon:2023 | java-17-amazon-corretto-debugsymbols | 0 |
| amazon:2023 | java-1.8.0-amazon-corretto-debugsymbols | 0 |
| amazon:2023 | java-11-amazon-corretto-jmods | 0 |
| alpine | openjdk21 | 0 |
…and 29 more
Timeline
- Oct 20, 2026 CVE Published
- Oct 21, 2026 EPSS Score (5 in total, the first dated here)
- Oct 21, 2026 Coalition ESS Score
- Oct 22, 2026 CVE Updated
- Oct 28, 2026 Distribution Patch (6 in total, the first dated here)
- Oct 28, 2026 Security Advisory (5 in total, the first dated here)
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2026-91451
vulnetix vdb fixes CVE-2026-91451Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2026-91451/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart
References
- Oracle Advisory vendor-advisory