Description
SignXML is an implementation of the W3C XML Signature standard in Python. When verifying signatures with X509 certificate validation turned off and HMAC shared secret set (`signxml.XMLVerifier.verify(require_x509=False, hmac_key=...`), versions of SignXML prior to 4.0.4 are vulnerable to a potential algorithm confusion attack. Unless the user explicitly limits the expected signature algorithms using the `signxml.XMLVerifier.verify(expect_config=...)` setting, an attacker may supply a signature unexpectedly signed with a key other than the provided HMAC key, using a different (asymmetric key) signature algorithm. Starting with SignXML 4.0.4, specifying `hmac_key` causes the set of accepted signature algorithms to be restricted to HMAC only, if not already restricted by the user.
INFO
Published Date :
2025-06-02T16:22:08.966Z
Last Modified :
2025-06-02T16:30:51.717Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2025-48994 vulnerability.
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REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2025-48994.
