What’s Vulnerable › Vulnerabilities

CVE-2019-25147: Pretty Links <= 2.1.9 - Unauthenticated Stored Cross-Site Scripting via track_link

• 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: yes
• Published: 2023-06-07 · updated 2026-06-17
• Weakness: CWE-79

Description

The Pretty Links plugin for WordPress is vulnerable to Stored Cross-Site Scripting via various IP headers as well as the referer header in versions up to, and including, 2.1.9 due to insufficient input sanitization and output escaping in the track_link function. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• Prettylinks Pretty Links: before 2.1.10 — fixed in 2.1.10

How to fix

Upgrade to a fixed version: Prettylinks Pretty Links 2.1.10. Check the vendor advisory for mitigations.

References

• https://blog.nintechnet.com/stored-xss-and-csv-injection-vulnerabilities-in-wordpress-shortlinks-by-pretty-links-plugin/
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2108490%40pretty-link%2Ftrunk&old=2078274%40pretty-link%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/ae058c5b-b90b-4a1e-9f56-d56dbd2d3607?source=cve
• https://blog.nintechnet.com/stored-xss-and-csv-injection-vulnerabilities-in-wordpress-shortlinks-by-pretty-links-plugin/
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2108490%40pretty-link%2Ftrunk&old=2078274%40pretty-link%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/ae058c5b-b90b-4a1e-9f56-d56dbd2d3607?source=cve

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