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CVE

CVE-2022-23494

tinymce is an open source rich text editor. A cross-site scripting (XSS) vulnerability was discovered in the alert and c

tinymce is an open source rich text editor. A cross-site scripting (XSS) vulnerability was discovered in the alert and confirm dialogs when these dialogs were provided with malicious HTML content. This can occur in plugins that use the alert or confirm dialogs, such as in the image plugin, which presents these dialogs when certain errors occur.

The vulnerability allowed arbitrary JavaScript execution when an alert presented in the TinyMCE UI for the current user. This vulnerability has been patched in TinyMCE 5.10.7 and TinyMCE 6.3.1 by ensuring HTML sanitization was still performed after unwrapping invalid elements. Users are advised to upgrade to either 5.10.7 or 6.3.1.

Users unable to upgrade may ensure the images_upload_handler returns a valid value as per the images_upload_handler documentation.

MEDIUM · CVSS 5.4 EPSS 0.01514
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Products & Versions

2
tiny tinymce< 5.10.7
tiny tinymce>= 6.0.0 and < 6.3.1
▤

Affected Packages

3
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
NuGet TinyMCE MODERATE fixed in 6.3.1
Packagist tinymce/tinymce MODERATE fixed in 6.3.1
npm tinymce MODERATE fixed in 6.3.1
▣

Scoring & Timeline

5.4
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Dec 2022 · 10:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/tinymce/tinymce/commit/6923d85eba6de3e08ebc9c5a387b5abdaa21150ePatchThird Party Advisory
https://github.com/tinymce/tinymce/commit/8bb2d2646d4e1a718fce61a775fa22e9d317b32dPatchThird Party Advisory
https://github.com/tinymce/tinymce/security/advisories/GHSA-gg8r-xjwq-4w92PatchThird Party Advisory
https://www.tiny.cloud/docs/release-notes/release-notes5107/#securityfixesRelease NotesVendor Advisory
https://www.tiny.cloud/docs/tinymce/6/6.3-release-notes/#security-fixesRelease NotesVendor Advisory
https://www.tiny.cloud/docs/tinymce/6/file-image-upload/#images_upload_handlerVendor Advisory
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