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Message-ID: <2dcb607b-c04b-2d18-7433-c744b4549045@apache.org>
Date: Fri, 06 Nov 2026 15:32:01 +0000
From: Robert Lazarski <robertlazarski@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-90436: Apache Axis 1.x (EOL): unauthenticated remote
class instantiation via SOAP fault exceptionName
Severity: critical
Affected versions:
- Apache Axis 1.x (EOL) through 1.4
- Apache Axis 1.x (EOL) through 1.4
- Apache Axis 1.x (EOL) aac718c6035435d96b39d6aebb9c078a13af7cc8 before 41f3b4e8d04e310ca81f86b92630ab2c11d608bd
Description:
** UNSUPPORTED WHEN ASSIGNED ** Deserialization of an inbound SOAP fault in Apache Axis 1.x allows unauthenticated remote class instantiation. When a SOAP <Fault> carries a <detail><exceptionName> element, Axis loads the named class and, if a String <data> element is also present, instantiates it through its String constructor before checking that it is an AxisFault. Loading alone runs the class's static initializer. With a suitable class on the application's classpath this leads to remote code execution. The fault is parsed while the engine resolves the target service, before any per-service handler chain runs, so authentication handlers configured on a service do not protect against it. This affects all Apache Axis 1.x versions through 1.4.
As Axis 1 has been EOL we recommend you migrate to a different SOAP engine, such as Apache Axis 2/Java. Alternatively you could use a build of Axis with the patch from https://github.com/apache/axis-axis1-java/commit/41f3b4e8d04e310ca81f86b92630ab2c11d608bd applied. The Apache Axis project does not expect to create an Axis 1.x release fixing this problem.
Credit:
José Apari-Pantigozo from OKIOK (finder)
References:
https://github.com/apache/axis-axis1-java/commit/41f3b4e8d04e310ca81f86b92630ab2c11d608bd
https://axis.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-90436
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