Tinymce
CVE-2023-48219
MEDIUM
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Lifecycle Timeline
1Blast Radius
ecosystem impact- 2 npm packages depend on tinymce (2 direct, 0 indirect)
Ecosystem-wide dependent count for version 6.0.0.
DescriptionNVD
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.
AnalysisAI
TinyMCE is an open source rich text editor. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Technical ContextAI
This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. 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. Affected products include: Tiny Tinymce.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.
TinyMCE versions before 5.6.0 are affected by a stored cross-site scripting vulnerability. Rated medium severity (CVSS 6
TinyMCE versions before 5.10.0 are affected by a cross-site scripting vulnerability. Rated medium severity (CVSS 6.1), t
TinyMCE versions before 5.9.0 are affected by a stored cross-site scripting vulnerability. Rated medium severity (CVSS 6
TinyMCE before 4.9.7 and 5.x before 5.1.4 allows XSS in the core parser, the paste plugin, and the visualchars plugin by
tinymce 4.7.11, 4.7.12 is affected by: CWE-79: Improper Neutralization of Input During Web Page Generation. Rated medium
Stored cross-site scripting in TinyMCE rich text editor allows authenticated attackers to inject persistent JavaScript b
Stored cross-site scripting in TinyMCE's media plugin allows authenticated attackers to inject malicious JavaScript via
Stored cross-site scripting in TinyMCE rich text editor versions prior to 5.11.1, 7.9.3, and 8.5.1 allows authenticated
Stored/reflected cross-site scripting in TinyMCE rich text editor versions 6.8.0 through 7.0.x allows authenticated user
The bbcode plugin in TinyMCE 3.5.8 does not properly enforce the TinyMCE security policy for the (1) encoding directive
TinyMCE is an open source rich text editor. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable
TinyMCE is an open source rich text editor. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable
Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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