CVE-2018-1000162

6.1 mediumEPSS 1.2%

Medium (6.1) in parsedown parsedown. EPSS 1.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.0

6.1 medium

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 1.2% chance of exploitation in the next 30 days; higher than 67% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2018-04-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

parsedown:parsedown

References

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

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