Detect and validate external XML entity vulnerabilities in authorized targets.
npx skills add https://github.com/Q16G/aster --skill xxe-testing-q16g
Please help me install this Agent Skill. Skill: xxe-testing Source: https://github.com/Q16G/aster/tree/main/skills/pentest/xxe-testing Command: npx skills add https://github.com/Q16G/aster --skill xxe-testing-q16g
XML external entity vulnerabilities can lead to data leakage and SSRF when XML parsers process external entity declarations.
Run the XXE testing skill against an authorized target to verify whether the XML parser processes external entities.
High-intent search queries and answers about installing and using this skill.
To detect XXE vulnerabilities in an XML parser, you inject external entity declarations into XML inputs like uploads or SOAP payloads to verify if the parser resolves them, which can lead to data disclosure or SSRF.
XML external entity testing identifies security risks where parsers process external entity declarations. You need it during authorized security assessments when targets expose XML parsing capabilities via APIs, uploads, or SOAP interfaces to prevent data leaks.
You test for SSRF using XML external entities by injecting payloads with external-entity resolution attempts into target XML endpoints and monitoring for out-of-band requests or signals that validate server-side request forgery vulnerabilities.
Yes, you can use this XXE testing skill against SOAP interfaces and API endpoints. It is specifically designed to assess XXE risks across various XML inputs, including inline XML, SOAP payloads, and file uploads within authorized environments.
Limitations of testing XML external entity vulnerabilities include strict authorization boundaries; testing must be restricted to authorized environments with safe testing boundaries to prevent unintended data disclosure or SSRF during external-entity resolution attempts.
To check if your XML parser processes external entities safely, run authorized external-entity resolution attempts and small file reads against the target system to validate parser configurations and verify safe handling of XML inputs.
jayjpatel9717Detect XXE vulnerabilities in XML-accepting endpoints using OOB DNS/HTTP callbacks.
uphiagoDetect and validate SSRF vulnerabilities with out-of-band confirmation.
sseshachalaIdentify XXE vulnerabilities in XML parsers via inline and DTD payloads.
RifteoDetect and exploit XML External Entity vulnerabilities in web applications.
