Description
The W3C XML Signature Syntax and Processing (XMLDsig) specification, starting with 1.0, was originally published with a "RetrievalMethod is a URI ... that may be used to obtain key and/or certificate information" statement and no accompanying information about SSRF risks, and this may have contributed to vulnerable implementations such as those discussed in CVE-2023-36661 and CVE-2024-21893. NOTE: this was mitigated in 1.1 and 2.0 via a directly referenced Best Practices document that calls on implementers to be wary of SSRF.
References (5)
Core 5
Core References
Various Sources
https://www.w3.org/TR/2013/NOTE-xmldsig-bestpractices-20130411/
Various Sources
https://www.w3.org/TR/xmldsig-core1/
Various Sources
https://www.w3.org/TR/xmldsig-core2/
Various Sources
https://www.w3.org/Signature/Drafts/WD-xmldsig-core-200003plc/
Scores
CVSS v3
7.3
EPSS
0.0010
EPSS Percentile
26.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-918
Status
published
Published
Jun 26, 2024
Tracked Since
Feb 18, 2026