CVE-2020-27388

5.4 mediumEPSS 0.7%

Medium (5.4) in yourls yourls. EPSS 0.7% chance of exploitation in the next 30 days.

Multiple Stored Cross Site Scripting (XSS) vulnerabilities exist in the YOURLS Admin Panel, Versions 1.5 - 1.7.10. An authenticated user must modify a PHP plugin with a malicious payload and upload it, resulting in multiple stored XSS issues.

Severity

CVSS 3.1

5.4 medium

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

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 53% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2020-10-23
Modified: 2026-07-09
Record from: the NVD, synced 2026-10-19

Affected

yourls:yourls

References

https://github.com/YOURLS/YOURLS/pull/2761
https://johnjhacking.com/blog/cve-2020-27388/
https://github.com/YOURLS/YOURLS/pull/2761
https://johnjhacking.com/blog/cve-2020-27388/

Check your stack JSON