Feeds for YouTube <= 2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

Published 3 y ago 2023-09-14 · modified 4 mo ago 2026-06-17 · JSON

CVSS

6.4

v3.1 · CNA

CISA KEV

not known exploited

EPSS

0.5%

percentile 46%

Public exploits

none known

The Feeds for YouTube plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'youtube-feed' shortcode in versions up to, and including, 2.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CISA SSVC assessment

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 21 mo ago 2025-02-05

Exploit prediction (EPSS)

0.55% probability of exploitation in the next 30 days, higher than 46% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
CNA	3.1	6.4	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N`
CNA	3.1	6.4	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N`
NVD	3.1	5.4	`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`

Affected products

smub Feeds for YouTube (YouTube video, channel, and gallery plugin)

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

wordfence.com /threat-intel/vulnerabilities/id/376e2638-a873-4142-ad7d-067ae3333709?source=cve · x_transferred
plugins.trac.wordpress.org /browser/feeds-for-youtube/tags/2.1/templates/feed.php#L33 · x_transferred
plugins.trac.wordpress.org /changeset/2966017/feeds-for-youtube#file564 · x_transferred

Sources

CVE List: CVE-2023-4841
NVD: CVE-2023-4841

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.

Summary