CVE-2025-48994
- Source
- https://cve.org/CVERecord?id=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
- Downstream
- Published
- 2025-06-02T16:22:08Z
- Modified
- 2026-10-21T02:53:54Z
- Severity
-
- 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- SignXML's signature verification with HMAC is vulnerable to an algorithm confusion attack
- 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 thesignxml.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, specifyinghmac_keycauses the set of accepted signature algorithms to be restricted to HMAC only, if not already restricted by the user. - Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-303" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/48xxx/CVE-2025-48994.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/48xxx/CVE-2025-48994.json
- https://github.com/XML-Security/signxml/security/advisories/GHSA-6vx8-pcwv-xhf4
- https://nvd.nist.gov/vuln/detail/CVE-2025-48994
- https://github.com/XML-Security/signxml/commit/e3c0c2b82a3329a65d917830657649c98b8c7600
Affected packages
Git / github.com/xml-security/signxml
Affected ranges
- Type
- GIT
- Repo
- https://github.com/xml-security/signxml
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "fixed": "4.0.4" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "e3c0c2b82a3329a65d917830657649c98b8c7600" } ], "source": "REFERENCES_COMMIT" } ] }