CVE-2024-29881 TinyMCE Cross-Site Scripting (XSS) vulnerability in handling external SVG files through Object or Embed elements

2024-03-2613:31:15

CWE-79

GitHub_M

github.com

tinymce

xss

svg

object element

embed element

CVSS3

4.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

AI Score

5.1

Confidence

High

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

TinyMCE is an open source rich text editor. A cross-site scripting (XSS) vulnerability was discovered in TinyMCE’s content loading and content inserting code. A SVG image could be loaded though an object or embed element and that image could potentially contain a XSS payload. This vulnerability is fixed in 6.8.1 and 7.0.0.

CNA Affected

[
  {
    "vendor": "tinymce",
    "product": "tinymce",
    "versions": [
      {
        "status": "affected",
        "version": "< 7.0.0"
      }
    ]
  }
]

References

github.com/tinymce/tinymce/commit/bcdea2ad14e3c2cea40743fb48c63bba067ae6d1

github.com/tinymce/tinymce/security/advisories/GHSA-5359-pvf2-pw78

www.tiny.cloud/docs/tinymce/6/6.8.1-release-notes/#new-convert_unsafe_embeds-option-that-controls-whether-object-and-embed-elements-will-be-converted-to-more-restrictive-alternatives-namely-img-for-image-mime-types-video-for-video-mime-types-audio-audio-mime-types-or-iframe-for-other-or-unspecified-mime-types

www.tiny.cloud/docs/tinymce/7/7.0-release-notes/#convert_unsafe_embeds-editor-option-is-now-defaulted-to-true