Is signxml affected by CVE-2025-48995?

PyPI signxml is affected in <4.0.4.

Is CVE-2025-48995 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

medium

CVE-2025-48995

Q: Is CVE-2025-48995 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

PyPI · signxml

Summary

SignXML's signature verification with HMAC is vulnerable to a timing attack

Severity: medium
EPSS: 0.2% (p10)
Also known as: GHSA-gmhf-gg8w-jw42
Published: 2025-06-05

References

https://github.com/XML-Security/signxml/security/advisories/GHSA-gmhf-gg8w-jw42
https://nvd.nist.gov/vuln/detail/CVE-2025-48995
https://github.com/XML-Security/signxml/commit/1b501faaacf34cf978a52dbc6915ec11e27611cd

Related advisories

CVE-2025-48994 — medium · PyPI/signxml

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.