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TI-2021-02716 Aliases CVE-2021-3785GHSA-m9fq-c9hp-59g7

Cross-site Scripting (XSS) - Stored in yourls/yourls

Priority LOW 26CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

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

Why it matters now

EPSS 0.00721 54th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed yourls/yourls (yourls): 1.8.2yourls/yourls (Packagist): 1.8.2

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
yourlsyourls/yourlsbefore 1.8.21.8.2Patch availableCNA
—yourls/yourls (Packagist)before 1.8.21.8.2Patch availableGHSA-m9fq-c9hp-59g7
  • yourls/yourls Vendoryourls Affected before 1.8.2 Fixed in 1.8.2 Patch available CNA
  • yourls/yourls (Packagist) Vendor— Affected before 1.8.2 Fixed in 1.8.2 Patch available GHSA-m9fq-c9hp-59g7

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:yourls:yourls:*:*:*:*:*:*:*:*before 1.8.2Vulnerableyourls
  • cpe:2.3:a:yourls:yourls:*:*:*:*:*:*:*:* Versions before 1.8.2 Vulnerable ·yourls

Remediation

  • Fix · CNA yourls/yourls (yourls) Fixed in 1.8.2
  • Fix · GHSA-m9fq-c9hp-59g7 yourls/yourls (Packagist) Fixed in 1.8.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-3785
  2. 2026-10-03 Alias added: GHSA-m9fq-c9hp-59g7

References

Exploit 1

Patch 1

Advisory 1

Other 1

  • TI-2019-10834 YOURLS through 1.7.3 is affected by a type juggling vulnerability in the api component that can result in login bypass. CVSS 3.0CRITICAL 9.8
  • TI-2021-02667 Improper Restriction of Rendered UI Layers or Frames in yourls/yourls CVSS 3.1HIGH 8.8
  • TI-2022-00039 Cross-Site Request Forgery (CSRF) in yourls/yourls CVSS 3.1HIGH 7.4
  • TI-2021-02714 Cross-site Scripting (XSS) - Reflected in yourls/yourls CVSS 3.1MEDIUM 6.1
  • TI-2020-16654 Multiple Stored Cross Site Scripting (XSS) vulnerabilities exist in the YOURLS Admin… CVSS 3.1MEDIUM 5.4
  • TI-2011-03381 Your Own URL Shortener (YOURLS) 1.5 allows remote attackers to obtain sensitive… CVSS 2.0MEDIUM 5.0
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences