CVE-2026-87291

NameCVE-2026-87291
DescriptionVulnerability in Oracle Java SE (component: Networking). Supported versions that are affected are Oracle Java SE: 21.0.12.1, 25.0.4.1 and 27. 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 read access to a subset 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 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
openjdk-21 (PTS)trixie (security), trixie21.0.12.1+1-1~deb13u1vulnerable
forky, sid21.0.13~8ea-1vulnerable
openjdk-25 (PTS)trixie25.0.3+9-2~deb13u1vulnerable
trixie (security)25.0.4.1+1-1~deb13u1vulnerable
forky25.0.5~7ea-1vulnerable
sid25.0.5~7ea-2vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
openjdk-21source(unstable)(unfixed)
openjdk-25source(unstable)(unfixed)
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