The Transliterator – Multilingual and Multi-script Text Conversion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content via Predictable {rstr_keep} Placeholder in all versions up to, and including, 2.5.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload survives WordPress comment save-time sanitization because the tags and attributes used (such as a[title] and code) are permitted by the core comment kses allow-list, and the literal characters comprising the plugin's shortcode markers and placeholder tokens are not stripped.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products
ivijanstefan:transliterator – multilingual and multi-script text conversion
References 5
https://plugins.trac.wordpress.org/browser/serbian-transliteration/tags/2.5.8/c…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/serbian-transliteration/tags/2.5.8/c…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/serbian-transliteration/tags/2.5.8/c…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset?reponame=&old=3714692%40serbian-tr…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/f31bf520-2006-496b-b4…
security@wordfence.com