6.1

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

CVSS: 6.1v3.1MediumModified
AliasesUBUNTU-CVE-2024-21908GHSA-5h9g-x5rv-25wg
Published 03-01-2024Last modified 14-07-2026
Open JSON

Vulnerability summary

CVE-2024-21908 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in tiny tinymce. EPSS estimates a 1.07% chance of exploitation in the next 30 days, higher than 64.2% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (CVE.org)
EPSS score
1.07%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2github

Timeline

  1. 03-01-2024
    PublishedVulnerability first disclosed.
  2. 14-07-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

1.07%

Chance of exploitation in the next 30 days

Percentile

64%

Versus all other CVEs

30-day change

0.00 pp

From 1.07% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.07%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • githubUnverified

    Tinymce

    Maturity: poc

  • githubUnverified

    Ghsa 5H9G X5Rv 25Wg

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Npm1 product
  • tinymce< 5.9.0
NuGet1 product
  • TinyMCE< 5.9.0
Tiny1 product
Tinymce1 product
  • tinymce< 5.9.0
Ubuntu1 product
  • tinymceAll versions (No fix recorded)

5 vendors · 5 products

References

7 links