CVE-2020-13101

Name: CVE-2020-13101
Creator: NVD / NIST
Published: 2020-08-24T08:15:10.55+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.73%

Last modified Jun 17, 2026

CVE-2020-13101 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.73% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.73%

49.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-347

Affected Software

Vendor	Product	Versions
Oasis-Open	Oasis Digital Signature Services	1.0

References

https://www.oasis-open.org/apps/org/workgroup/dss-x/Permissions Required, Vendor Advisory
https://www.oasis-open.org/committees/tc_home.php?wg_abbrev=dss-xVendor Advisory
https://www.oasis-open.org/standards#dssv1.0Vendor Advisory
https://www.oasis-open.org/apps/org/workgroup/dss-x/Permissions Required, Vendor Advisory
https://www.oasis-open.org/committees/tc_home.php?wg_abbrev=dss-xVendor Advisory
https://www.oasis-open.org/standards#dssv1.0Vendor Advisory

Timeline

Published: Aug 24, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-13101?

How severe is CVE-2020-13101?

CVE-2020-13101 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.73% probability of exploitation in the next 30 days.

How do I fix CVE-2020-13101?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-13101?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST