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CVE-2023-48219

Special characters in unescaped text nodes can trigger mXSS in TinyMCE

Published: Nov 15, 2023Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-79
6.1MEDIUM
NVD MITRE
EPSS Score
0.7%
Top 50.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

tinymce
commercialaka color picker, image manager
tinymceMixed
OSS Libraries / web-framework
tiny
oss-projectaka tinymce, moxiemanager, tinybrowser
tinymceLibrary
OSS Libraries / generic-library
npm
package-ecosystem
tinymce
OSS Libraries
Packagist
package-ecosystem
tinymce/tinymce
OSS Libraries
NuGet
package-ecosystem
TinyMCE
OSS Libraries

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
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References

https://github.com/tinymce/tinymce/security/advisories/GHSA-v626-r774-j7f8
github.com
https://tiny.cloud/docs/release-notes/release-notes5109/
tiny.cloud
https://tiny.cloud/docs/tinymce/6/6.7.3-release-notes/
tiny.cloud
and 6 more references View all →
News mentions
1

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