What’s Vulnerable › Vulnerabilities

CVE-2021-3783: Cross-site Scripting (XSS) - Reflected in yourls/yourls

• Severity: medium (CVSS 6.1 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: 2021-09-15 · updated 2026-06-17
• Weakness: CWE-79

Description

yourls is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected products

• yourls/yourls: through 1.8.2

References

• https://github.com/yourls/yourls/commit/94f6bab91182142c96ff11f481585b445449efd4
• https://huntr.dev/bounties/b688e553-d0d9-4ddf-95a3-ff4b78004984
• https://github.com/yourls/yourls/commit/94f6bab91182142c96ff11f481585b445449efd4
• https://huntr.dev/bounties/b688e553-d0d9-4ddf-95a3-ff4b78004984

Get alerted when CVE-2021-3783 or the next vulnerability affects your stack