5.4 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
6.4 Medium
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
54.8%
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 the images_upload_handler
returns a valid value as per the images_upload_handler documentation.
[
{
"vendor": "tinymce",
"product": "tinymce",
"versions": [
{
"version": "< 5.10.7",
"status": "affected"
},
{
"version": ">= 6.0.0, < 6.3.1",
"status": "affected"
}
]
}
]
github.com/tinymce/tinymce/commit/6923d85eba6de3e08ebc9c5a387b5abdaa21150e
github.com/tinymce/tinymce/commit/8bb2d2646d4e1a718fce61a775fa22e9d317b32d
github.com/tinymce/tinymce/security/advisories/GHSA-gg8r-xjwq-4w92
www.tiny.cloud/docs/release-notes/release-notes5107/#securityfixes
www.tiny.cloud/docs/tinymce/6/6.3-release-notes/#security-fixes
www.tiny.cloud/docs/tinymce/6/file-image-upload/#images_upload_handler
5.4 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
6.4 Medium
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
54.8%