CVE-2026-90436: Apache Axis 1.x (EOL): unauthenticated remote class instantiation via SOAP fault exceptionName

1. In CISA KEV: not seen
2. Exploited (reported): not seen
3. Scanning observed: not seen
4. Proof of concept public1 public GitHub repository (unverified), listed by PoC-in-GitHub10 Nov
5. Not established: not seen

DescriptionNVD

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.

• Ubuntu 26.04Under investigationchecked 12 Nov 13:30 UTC
• Ubuntu 24.04Under investigationchecked 12 Nov 13:30 UTC
• Ubuntu 22.04Under investigationchecked 12 Nov 13:30 UTC
• Debian 13Affected, no fix releasedchecked 12 Nov 13:30 UTC
• Debian 12Affected, no fix releasedchecked 12 Nov 13:30 UTC

1. 12 Nov
   Debian’s tracker lists Debian 12 as affected, with no fix released Debian
2. 12 Nov
   Debian’s tracker lists Debian 13 as affected, with no fix released Debian
3. 12 Nov
   Ubuntu’s tracker lists Ubuntu 16.04 as under investigation Ubuntu
4. 12 Nov
   Ubuntu’s tracker lists Ubuntu 18.04 as under investigation Ubuntu
5. 12 Nov
   Ubuntu’s tracker lists Ubuntu 20.04 as under investigation Ubuntu
6. 12 Nov
   Ubuntu’s tracker lists Ubuntu 22.04 as under investigation Ubuntu
7. 12 Nov
   Ubuntu’s tracker lists Ubuntu 24.04 as under investigation Ubuntu
8. 12 Nov
   Ubuntu’s tracker lists Ubuntu 26.04 as under investigation Ubuntu
9. 12 Nov
   Ubuntu’s tracker lists Ubuntu stonking as under investigation Ubuntu
10. 10 Nov
    PoC-in-GitHub lists 1 public GitHub repository (unverified) PoC-in-GitHub

• NVD entrynvd.nist.gov
• Vendor advisorygithub.com
• CVE recordcve.org