CVE-2020-27388

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-10-23 · updated 2026-07-09
Weakness: CWE-79

Description

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.

Affected products

yourls/yourls: from 1.5 through 1.7.10

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/

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