8.7

CVE-2026-47759: tiny tinymce Cross-site Scripting

CVSS: 8.7v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-47759GHSA-q742-qvgc-gc2f
Published 28-05-2026Last modified 30-05-2026
Open JSON

Vulnerability summary

CVE-2026-47759 is a high (CVSS 8.7) Cross-site Scripting vulnerability in tiny tinymce. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 19.4% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.7/10
010
High · v3.1 (CVE.org)
EPSS score
0.28%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 28-05-2026
    PublishedVulnerability first disclosed.
  2. 30-05-2026
    Last modifiedVulnerability information updated.

Description

TinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a stored XSS vulnerability via unsanitized data-mce-* attributes (data-mce-href, data-mce-src, data-mce-style). Allows attackers to inject malicious values that override safe attributes during serialization, bypassing validation. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.28%

Chance of exploitation in the next 30 days

Percentile

19%

Versus all other CVEs

30-day change

0.00 pp

From 0.28% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.28%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Tinymce2 products
  • tinymce≤ 5.10.9 | ≥ 6.0.0, < 7.9.3 | ≥ 8.0.0, < 8.5.1
  • tinymce< 5.11.1 | ≥ 6.0.0, ≤ 6.8.6 | ≥ 7.0.0, < 7.9.3 | ≥ 8.0.0, < 8.5.1
Npm1 product
  • tinymce≤ 5.10.9 | ≥ 6.0.0, < 7.9.3 | ≥ 8.0.0, < 8.5.1
NuGet1 product
  • TinyMCE≤ 5.10.9 | ≥ 6.0.0, < 7.9.3 | ≥ 8.0.0, < 8.5.1
Tiny1 product
  • tinymce< 5.11.1 | ≥ 6.0.0, < 7.9.3 | ≥ 8.0.0, < 8.5.1
Ubuntu1 product
  • tinymceAll versions (No fix recorded)

5 vendors · 6 products

References

7 links