Jinfeng Guo discovered that the Security component of OpenJDK 25 did not correctly handle certain representations of encoded strings. An unauthenticated remote attacker could possibly use this issue to modify files or leak sensitive information. ( CVE-2025-53057 ) Darius Bohni discovered that the JAXP component of OpenJDK 25 was vulnerable to a XML External Entity (XEE) attack. An unauthenticated remote attacker could possibly use this issue to modify files or leak sensitive information. ( CVE-2025-53066 ) Yakov Shafranovich discovered that the Libraries component of OpenJDK 21 contained an issue where certain Strings built with StringBuilder returned an incorrect result for String.equals() checks. An unauthenticated remote attacker could possibly use this issue to update, insert, or delete accessible data. (
Jinfeng Guo discovered that the Security component of OpenJDK 25 did not correctly handle certain representations of encoded strings. An unauthenticated remote attacker could possibly use this issue to modify files or leak sensitive information. ( CVE-2025-53057 )
Darius Bohni discovered that the JAXP component of OpenJDK 25 was vulnerable to a XML External Entity (XEE) attack. An unauthenticated remote attacker could possibly use this issue to modify files or leak sensitive information. ( CVE-2025-53066 )
Yakov Shafranovich discovered that the Libraries component of OpenJDK 21 contained an issue where certain Strings built with StringBuilder returned an incorrect result for String.equals() checks. An unauthenticated remote attacker could possibly use this issue to update, insert, or delete accessible data. (
Jinfeng Guo discovered that the Security component of OpenJDK 25 did not correctly handle certain representations of encoded strings. An unauthenticated remote attacker could possibly use this issue to modify files or leak sensitive information. ( CVE-2025-53057 ) Darius Bohni discovered that the JAXP component of OpenJDK 25 was vulnerable to a XML External Entity (XEE) attack. An unauthenticated remote attacker could possibly use this issue to modify files or leak sensitive information. ( CVE-2025-53066 ) Yakov Shafranovich discovered that the Libraries component of OpenJDK 21 contained an issue where certain Strings built with StringBuilder returned an incorrect result for String.equals() checks. An unauthenticated remote attacker could possibly use this issue to update, insert, or delete accessible data. ( CVE-2025-61748 ) In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes. Please see the following for more information:
Jinfeng Guo discovered that the Security component of OpenJDK 25 did not correctly handle certain representations of encoded strings. An unauthenticated remote attacker could possibly use this issue to modify files or leak sensitive information. ( CVE-2025-53057 )
Darius Bohni discovered that the JAXP component of OpenJDK 25 was vulnerable to a XML External Entity (XEE) attack. An unauthenticated remote attacker could possibly use this issue to modify files or leak sensitive information. ( CVE-2025-53066 )
Yakov Shafranovich discovered that the Libraries component of OpenJDK 21 contained an issue where certain Strings built with StringBuilder returned an incorrect result for String.equals() checks. An unauthenticated remote attacker could possibly use this issue to update, insert, or delete accessible data. ( CVE-2025-61748 )
In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes.
Please see the following for more information:
This update uses a new upstream release, which includes additional bug fixes. After a standard system update you need to restart Java applications to make all the necessary changes.
The problem can be corrected by updating your system to the following package versions:
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.
The full story
This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.
