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CVE-2026-88793highCWE-79

YouTube Embed 10.0 - 10.3 - Unauthenticated Stored XSS via youram_server

41Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 8.8epss 0.5%
exploitation probability
0.5%top 59% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
The YouTube Embed WordPress plugin from 10.0 to 10.3 does not perform any authorisation check on one of its AJAX actions, relying only on a nonce it prints on every front-end page, and does not escape the stored data before rendering it, allowing unauthenticated attackers to store arbitrary web scripts which will execute in the session of any user viewing the affected content, including an administrator.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
Unknown · YouTube Embed
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.