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CVE-2026-61308 is a difficult-to-exploit vulnerability in the Networking component of Oracle Java SE that also affects Oracle GraalVM for JDK and Oracle GraalVM Enterprise Edition. Affected versions are Oracle Java SE 8u501, 11.0.32, 17.0.20, 21.0.12, 25.0.4, and 26.0.2; Oracle GraalVM for JDK 17.0.20 and 21.0.12; and Oracle GraalVM Enterprise Edition 21.3.19. The flaw is reachable by an unauthenticated attacker over HTTP and can be exploited through APIs in the affected component, including scenarios where a web service supplies attacker-controlled data to those APIs. The issue also applies to Java client deployments that execute untrusted code in sandboxed Java Web Start applications or sandboxed Java applets and rely on the Java sandbox for isolation. Successful exploitation can cross security boundaries and expose sensitive data accessible to the affected runtime or dependent products.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability referenced in Red Hat advisory RHSA-2026:55774 affecting Red Hat Enterprise Linux 7 OpenJDK 8 packages; the content indicates confidentiality impact in CVSS v2 metadata but does not provide flaw specifics.
A JDK vulnerability affecting HTTP connections, fixed in the Java 11 OpenJDK Extended Lifecycle Support update for Red Hat Enterprise Linux 7, 8, and 9.
A networking-related vulnerability in Oracle Java SE / GraalVM components exploitable over HTTP by an unauthenticated attacker, potentially leading to unauthorized access to critical data and complete access to accessible data.
A specific OpenJDK vulnerability referenced by the Nessus plugin and used as the CVSS score source, but the content does not describe the flaw type beyond scoring metadata.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.