Medium severity · published Jun 9, 2026
CVE-2026-40991
XML External Entity (XXE) injection when documenting untrusted XML content
5.9
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:L
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SR
Spring REST Docs · Spring
4.0.0 before 4.0.0.1; 3.0.0 before 3.0.5.1; 2.0.0.RELEASE before 2.0.9.RELEASE · source: vendor, NVD