CVE-2024-21910: TinyMCE · Cross-site Scripting
Source CVE Database V5
Not known to be exploited · CVSS 6.1 Medium · fixed in 5.10.0 : update affected systems when convenient.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.9% chance of exploitation in 30 days – higher than 61% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.10.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 3 Jan 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
AI-suggested
A fix is available in TinyMCE version 5.10.0 and later. Users should upgrade to version 5.10.0 or newer to remediate this vulnerability. Since this is not a cloud service, remediation depends on applying the update to affected deployments. Patch status is confirmed by the version information provided.
Description
TinyMCE versions before 5.10.0 are affected by a cross-site scripting vulnerability. A remote and unauthenticated attacker could introduce crafted image or link URLs that would result in the execution of arbitrary JavaScript in an editing user's browser.
References
- github.com/tinymce/tinymce/security/advisories/GHSA-r8hm-w5f7-wj39 (opens in a new tab)
- github.com/jazzband/django-tinymce/issues/366 (opens in a new tab)
- github.com/jazzband/django-tinymce/releases/tag/3.4.0 (opens in a new tab)
- pypi.org/project/django-tinymce/3.4.0/ (opens in a new tab)
- github.com/advisories/GHSA-r8hm-w5f7-wj39 (opens in a new tab)
- vulncheck.com/advisories/vc-advisory-GHSA-r8hm-w5f7-wj39 (opens in a new tab)