H3XAOperational intelligence
Live analytical pictureEvidence before assessment
TypeTechnique
External ID—
First seen2026-10-17
Last seen2026-10-17

Confidence

—

An adversary may execute an attack on a web service that uses SOAP messages in communication. By sending a very large SOAP array declaration to the web service, the attacker forces the web service to allocate space for the array elements before they are parsed by the XML parser. The attacker message is typically small in size containing a large array declaration of say 1,000,000 elements and a couple of array elements. This attack targets exhaustion of the memory resources of the web service.

Labels

attack-patterncapec
1 recorded

Relationships

child-ofTechnique
1 external

References

capec
CAPEC-493
open