CVE-2018-1000162

Name: CVE-2018-1000162
Creator: NVD / NIST
Published: 2018-04-18T19:29:00.583+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.20%

Last modified Jun 17, 2026

CVE-2018-1000162 is a vulnerability of currently unknown severity. Parsedown version prior to 1.7.0 contains a Cross Site Scripting (XSS) vulnerability in `setMarkupEscaped` for escaping HTML that can result in JavaScript code execution. This attack appears to be exploitable via specially crafted markdown that allows it to side step HTML escaping by breaking AST boundaries. EPSS estimates a 1.20% chance of exploitation in the next 30 days.

Description

Parsedown version prior to 1.7.0 contains a Cross Site Scripting (XSS) vulnerability in `setMarkupEscaped` for escaping HTML that can result in JavaScript code execution. This attack appears to be exploitable via specially crafted markdown that allows it to side step HTML escaping by breaking AST boundaries. This vulnerability appears to have been fixed in 1.7.0 and later.

Metrics

EPSS Probability

1.20%

64.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Parsedown	Parsedown	< 1.7.0

References

https://github.com/Roave/SecurityAdvisories/issues/44#issuecomment-368594409Third Party Advisory
https://github.com/erusev/parsedown/pull/495Third Party Advisory
https://github.com/Roave/SecurityAdvisories/issues/44#issuecomment-368594409Third Party Advisory
https://github.com/erusev/parsedown/pull/495Third Party Advisory

Timeline

Published: Apr 18, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-1000162?

How severe is CVE-2018-1000162?

Severity scoring for CVE-2018-1000162 is pending analysis. The EPSS model estimates a 1.20% probability of exploitation in the next 30 days.

How do I fix CVE-2018-1000162?

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-2018-1000162?

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

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Source: NVD / NIST