6.1

CVE-2023-48219: tiny tinymce Cross-site Scripting

CVSS: 6.1v3.1MediumModified
AliasesUBUNTU-CVE-2023-48219GHSA-v626-r774-j7f8
Published 15-11-2023Last modified 29-08-2024
Open JSON

Vulnerability summary

CVE-2023-48219 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in tiny tinymce. EPSS estimates a 0.71% chance of exploitation in the next 30 days, higher than 52.9% of scored vulnerabilities.

Overall risk
25/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.71%
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. 15-11-2023
    PublishedVulnerability first disclosed.
  2. 29-08-2024
    Last modifiedVulnerability information updated.

Description

TinyMCE is an open source rich text editor. A mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo/redo functionality and other APIs and plugins. Text nodes within specific parents are not escaped upon serialization according to the HTML standard. If such text nodes contain a special character reserved as an internal marker, they can be combined with other HTML patterns to form malicious snippets. These snippets pass the initial sanitisation layer when the content is parsed into the editor body, but can trigger XSS when the special internal marker is removed from the content and re-parsed. his vulnerability has been patched in TinyMCE versions 6.7.3 and 5.10.9. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.71%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

0.00 pp

From 0.71% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.71%

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, < 6.7.3
  • tinymce≥ 6.0.0 < 6.7.3 (No fix recorded) | < 5.10.9
Npm1 product
  • tinymce< 5.10.9 | ≥ 6.0.0, < 6.7.3
NuGet1 product
  • TinyMCE< 5.10.9 | ≥ 6.0.0, < 6.7.3
Tiny1 product
  • tinymce< 5.10.9 | ≥ 6.0.0, < 6.7.3
Ubuntu1 product
  • tinymceAll versions (No fix recorded)

5 vendors · 6 products

References

11 links
Show all 11 references