Skip to main content
CVE-2024-21908VulnerabilityPublished Updated

CVE-2024-21908: tinymce · Cross-site Scripting

Affects tinymceSource CVE Database V5

0

Not known to be exploited · CVSS 6.1 Medium : upgrade to 5.9.0 when convenient.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.0% chance of exploitation in 30 days – higher than 64% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 5.9.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Jan 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 2026-10-25.

What to do

Upgrade tinymce/tinymce to 5.9.0.

Affected software

ProductAffectedFixed in
npmtinymce/tinymcepkg:npm/tinymce/tinymceOther threatsAffected
  • <5.9.0
  • =0
Fixed in
  • 5.9.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade TinyMCE to version 5.9.0 or later, where this vulnerability has been fixed. Since the vulnerability affects versions before 5.9.0, applying the official update is the recommended remediation. No vendor advisory was provided to indicate alternative mitigations or temporary fixes.

Description

TinyMCE versions before 5.9.0 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

Community reviews

Loading reviews…