CVE-2024-21911: tinymce · Cross-site Scripting
Affects tinymceSource CVE Database V5
Not known to be exploited · CVSS 6.1 Medium : upgrade to 5.6.0 when convenient.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 1.1% chance of exploitation in 30 days – higher than 67% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.6.0
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
Upgrade tinymce to 5.6.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
npmtinymcepkg:npm/tinymceOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available in TinyMCE version 5.6.0 and later. Users and administrators should upgrade to version 5.6.0 or newer to remediate this vulnerability. Since this is not a cloud service, patching the affected software is required to mitigate the risk. No vendor advisory content was provided to indicate alternative mitigations or that no action is required.
Description
TinyMCE versions before 5.6.0 are affected by a stored cross-site scripting vulnerability. An unauthenticated and remote attacker could insert crafted HTML into the editor resulting in arbitrary JavaScript execution in another user's browser.
References
- github.com/tinymce/tinymce/security/advisories/GHSA-w7jx-j77m-wp65 (opens in a new tab)
- npmjs.com/package/tinymce (opens in a new tab)
- tiny.cloud/docs/release-notes/release-notes56/ (opens in a new tab)
- github.com/advisories/GHSA-w7jx-j77m-wp65 (opens in a new tab)
- vulncheck.com/advisories/vc-advisory-GHSA-w7jx-j77m-wp65 (opens in a new tab)