What’s Vulnerable › Vulnerabilities
CVE-2026-40991: XML External Entity (XXE) injection when documenting untrusted XML content
- Severity: medium (CVSS 5.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-06-10 · updated 2026-07-23
- Weakness: CWE-611
Description
When using spring-restdocs-webtestclient or spring-restdocs-restassured to document a remote API accessed over HTTP, an attacker who compromises the API or tricks the user into documenting a malicious API can perform an XXE injection attack when the documentation-generating tests are next executed. Affected versions: Spring REST Docs 4.0.0; 3.0.0 through 3.0.5; 2.0.0.RELEASE through 2.0.8.RELEASE.
Affected products
- Spring REST Docs: from 2.0.0 before 2.0.9; from 3.0.0 before 3.0.5.1; 4.0.0 — fixed in 2.0.9, 3.0.5.1
How to fix
Upgrade to a fixed version: Spring REST Docs 2.0.9, 3.0.5.1. Check the vendor advisory for mitigations.
References
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