RSS for Yandex Turbo <= 1.29 - Authenticated Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 1.30
- Affected Plugin
- RSS for Yandex Turbo
- Affected Version
<= 1.29- CVSS
- 5.5Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2021-24277
At a glance
CVE-2021-24277 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the RSS for Yandex Turbo WordPress plugin, affecting versions <= 1.29. It carries a CVSS score of 5.5 (reachable over the network; low attack complexity). Exploitation requires an authenticated account. The issue is fixed in version 1.30; sites on affected versions should update now. Disclosed April 2021, reported by Himamshu Dilip Kulkarni.
Vulnerability Overview
The RSS for Yandex Turbo WordPress plugin before 1.30 did not properly sanitise the user inputs from its Счетчики settings tab before outputting them back in the page, leading to authenticated stored Cross-Site Scripting issues
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reaching this weakness in RSS for Yandex Turbo <= 1.29 takes any authenticated account. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.
Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For RSS for Yandex Turbo the fix is 1.30: builds <= 1.29 are affected, anything from 1.30 onward is not.
Remediation
Update to version 1.30, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to RSS for Yandex Turbo: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: RSS for Yandex Turbo 1.30 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
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