cvedb.io
CVE-2018-20583
MEDIUM · CVSS 6.1
EPSS exploitation probability: 0%
Published 2018-12-30T05:29:00.753 · Last modified 2026-06-17T01:53:07.827

Summary

Cross-site scripting (XSS) vulnerability in the PHP League CommonMark library versions 0.15.6 through 0.18.x before 0.18.1 allows remote attackers to insert unsafe URLs into HTML (even if allow_unsafe_links is false) via a newline character (e.g., writing javascript as javascri%0apt).

Affected products

thephpleague — commonmark

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.