CVE-2023-4841: Feeds for YouTube <= 2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
Vulnerability summary
CVE-2023-4841 is a medium (CVSS 6.4) Cross-site Scripting vulnerability in smashballoon feeds_for_youtube. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 45% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 14-09-2023PublishedVulnerability first disclosed.
- 08-04-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
3 scores · 3 sources · 1 version- NVDNIST5.4MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:NDiffers
- wordfenceSource6.4MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
EPSS trend
Probability
0.55%
Chance of exploitation in the next 30 days
Percentile
45%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.55% on 22-09-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (wordfence.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Smashballoon1 product
- feeds_for_youtube≤ 2.1
Smub1 product
Wordpress1 product
- feeds-for-youtube≤ 2.1 (fixed in 2.1.2)
3 vendors · 3 products
References
4 links- www.wordfence.com/threat-intel/vulnerabilities/id/376e2638-a873-4142-ad7d-067ae3333709?source=cveExploitThird Party Advisory