CVE-2019-10010

Name: CVE-2019-10010
Creator: NVD / NIST
Published: 2019-03-24T18:29:00.27+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.05%

Last modified Jun 17, 2026

CVE-2019-10010 is a vulnerability of currently unknown severity. Cross-site scripting (XSS) vulnerability in the PHP League CommonMark library before 0.18.3 allows remote attackers to insert unsafe links into HTML by using double-encoded HTML entities that are not properly escaped during rendering, a different vulnerability than CVE-2018-20583.. EPSS estimates a 1.05% chance of exploitation in the next 30 days.

Description

Cross-site scripting (XSS) vulnerability in the PHP League CommonMark library before 0.18.3 allows remote attackers to insert unsafe links into HTML by using double-encoded HTML entities that are not properly escaped during rendering, a different vulnerability than CVE-2018-20583.

Metrics

EPSS Probability

1.05%

59.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Thephpleague	Commonmark	< 0.18.3

References

https://github.com/thephpleague/commonmark/issues/353Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/thephpleague/commonmark/releases/tag/0.18.3Release Notes, Third Party Advisory
https://github.com/thephpleague/commonmark/issues/353Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/thephpleague/commonmark/releases/tag/0.18.3Release Notes, Third Party Advisory

Timeline

Published: Mar 24, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-10010?

How severe is CVE-2019-10010?

Severity scoring for CVE-2019-10010 is pending analysis. The EPSS model estimates a 1.05% probability of exploitation in the next 30 days.

How do I fix CVE-2019-10010?

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-2019-10010?

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

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Source: NVD / NIST