Oracle Java SE 8u491/8u491-perf Installation sandbox

Summaryinfo

A vulnerability has been found in Oracle Java SE 8u491/8u491-perf and classified as critical. Impacted is an unknown function of the component Installation. Performing a manipulation results in sandbox. This vulnerability was named CVE-2026-60526. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in Oracle Java SE 8u491/8u491-perf. This affects an unknown part of the component Installation. The manipulation with an unknown input leads to a sandbox vulnerability. CWE is classifying the issue as CWE-265. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Vulnerability in Oracle Java SE (component: Installation). Supported versions that are affected are Oracle Java SE: 8u491 and 8u491-perf. Difficult to exploit vulnerability allows low privileged attacker with logon to the infrastructure where Oracle Java SE executes to compromise Oracle Java SE. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of Oracle Java SE. 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 6.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H).

The advisory is shared at oracle.com. This vulnerability is uniquely identified as CVE-2026-60526 since 07/08/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 07/22/2026). MITRE ATT&CK project uses the attack technique T1611 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Programming Language Software

Vendor

• Oracle

Name

• Java SE

Version

• 8u491
• 8u491-perf

License

• open-source

Website

• Vendor: https://www.oracle.com

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