CVE-2025-48994

Source
https://nvd.nist.gov/vuln/detail/CVE-2025-48994
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-48994.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-48994
Aliases
Related
Published
2025-06-02T17:15:40Z
Modified
2025-06-18T23:42:44.880051Z
Summary
[none]
Details

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.

References

Affected packages

Debian:13 / python-signxml

Package

Name
python-signxml
Purl
pkg:deb/debian/python-signxml?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.0.5+dfsg-1

Affected versions

4.*

4.0.2+dfsg-1
4.0.3+dfsg-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Git / github.com/xml-security/signxml

Affected ranges

Type
GIT
Repo
https://github.com/xml-security/signxml
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed

Affected versions

v0.*

v0.1.0
v0.1.1
v0.1.2
v0.1.3
v0.1.4
v0.1.5
v0.1.6
v0.1.7
v0.1.8
v0.1.9
v0.2.0
v0.2.2
v0.2.3
v0.2.4
v0.2.5
v0.2.6
v0.2.7
v0.2.8
v0.2.9
v0.3.0
v0.3.1
v0.3.2
v0.3.3
v0.3.4
v0.3.5
v0.3.6
v0.3.7
v0.3.8
v0.3.9
v0.4.0
v0.4.1
v0.4.2
v0.4.4
v0.4.5
v0.4.6
v0.5.0
v0.6.0

v1.*

v1.0.0
v1.0.1
v1.0.2

v2.*

v2.0.0
v2.1.0
v2.1.1
v2.1.2
v2.1.3
v2.1.4
v2.10.0
v2.10.1
v2.2.0
v2.2.1
v2.2.2
v2.2.3
v2.2.4
v2.2.5
v2.2.6
v2.3.0
v2.4.0
v2.5.0
v2.5.1
v2.5.2
v2.6.0
v2.7.0
v2.7.1
v2.7.2
v2.7.3
v2.8.0
v2.8.1
v2.8.2
v2.9.0

v3.*

v3.0.0
v3.0.1
v3.0.2
v3.1.0
v3.1.1
v3.2.0
v3.2.1
v3.2.2

v4.*

v4.0.0
v4.0.1
v4.0.2
v4.0.3