CVE-2020-13101: Oasis-Open Oasis Digital Signature Services

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

In OASIS Digital Signature Services (DSS) 1.0, an attacker can control the validation outcome (i.e., trigger either a valid or invalid outcome for a valid or invalid signature) via a crafted XML signature, when the InlineXML option is used. This defeats the expectation of non-repudiation.

Affected products

• Oasis-Open Oasis Digital Signature Services: version 1.0 only

Published 2020-08-24. Last modified 2026-06-17.