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CVE-2026-47761

TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` injection

8.7 HighPublic exploitFix available

TinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a stored XSS vulnerability in the media plugin. Attackers can inject malicious scripts via crafted data-mce-* attributes, which are executed when content is rendered. Impacts users of TinyMCE with the media plugin enabled. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
None

Exploit likelihood

0.26%Up 0.2 points since May 29, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.7

TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` injection

TinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a stored XSS vulnerability in the media plugin. Attackers can inject malicious scripts via crafted data-mce-* attributes, which are executed when content is rendered. Impacts users of TinyMCE with the media plugin enabled. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.

Record
CVE-2026-47761
CVSS 3.1
8.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness
CWE-79
Updated
2026-11-02
EUVDEUVD-2026-32922 8.7

TinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a stored XSS vulnerability in the media plugin. Attackers can inject malicious scripts via crafted data-mce-* attributes, which are executed when content is rendered. Impacts users of TinyMCE with the media plugin enabled. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.

Record
EUVD-2026-32922
CVSS 3.1
8.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-vg35-5wq7-3x7w 8.7

TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` injection

Impact

Stored XSS vulnerability in the media plugin. Attackers can inject malicious scripts via crafted data-mce-* attributes, which are executed when content is rendered. Impacts users of TinyMCE with the media plugin enabled.

Patches

This vulnerability has been patched in TinyMCE 8.5.1, TinyMCE 7.9.3 and TinyMCE 5.11.1 LTS by ensuring that, when using the media plugin, any content with data-mce-object and data-mce-p-* attributes are properly sanitized.

Workarounds

No official workaround available.

Fix

To avoid this vulnerability:

  • Upgrade to TinyMCE 8.5.1 or higher.
  • Upgrade to TinyMCE 7.9.3 or higher.
  • Upgrade to TinyMCE 5.11.1 LTS or higher for TinyMCE 5.x (only available as part of commercial long-term support contract).

Acknowledgements

Tiny thanks Aymane MAZGUITI and Ange Primiterra for their help identifying this vulnerability.

Record
GHSA-vg35-5wq7-3x7w
CVSS 3.1
8.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness
CWE-79
Updated
2026-11-02
NVD 8.7

TinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a stored XSS vulnerability in the media plugin. Attackers can inject malicious scripts via crafted data-mce-* attributes, which are executed when content is rendered. Impacts users of TinyMCE with the media plugin enabled. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.

Record
CVE-2026-47761
CVSS 3.1
8.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSV 8.7

TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` injection

TinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a stored XSS vulnerability in the media plugin. Attackers can inject malicious scripts via crafted data-mce-* attributes, which are executed when content is rendered. Impacts users of TinyMCE with the media plugin enabled. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.

Record
CVE-2026-47761
CVSS 3.1
8.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness
CWE-79
Updated
2026-11-02
OSVGHSA-vg35-5wq7-3x7w 8.7

TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` injection

Impact

Stored XSS vulnerability in the media plugin. Attackers can inject malicious scripts via crafted data-mce-* attributes, which are executed when content is rendered. Impacts users of TinyMCE with the media plugin enabled.

Patches

This vulnerability has been patched in TinyMCE 8.5.1, TinyMCE 7.9.3 and TinyMCE 5.11.1 LTS by ensuring that, when using the media plugin, any content with data-mce-object and data-mce-p-* attributes are properly sanitized.

Workarounds

No official workaround available.

Fix

To avoid this vulnerability:

  • Upgrade to TinyMCE 8.5.1 or higher.
  • Upgrade to TinyMCE 7.9.3 or higher.
  • Upgrade to TinyMCE 5.11.1 LTS or higher for TinyMCE 5.x (only available as part of commercial long-term support contract).

Acknowledgements

Tiny thanks Aymane MAZGUITI and Ange Primiterra for their help identifying this vulnerability.

Record
GHSA-vg35-5wq7-3x7w
CVSS 3.1
8.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness
CWE-79
Updated
2026-11-02
Show 4 moreShow less
OSVUBUNTU-CVE-2026-47761 8.7

TinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a stored XSS vulnerability in the media plugin. Attackers can inject malicious scripts via crafted data-mce-* attributes, which are executed when content is rendered. Impacts users of TinyMCE with the media plugin enabled. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.

Record
UBUNTU-CVE-2026-47761
CVSS 3.1
8.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
OSVCLSA-2026-1781052744 No score

TuxCare security update for tinymce (4 CVEs)

TuxCare rebuilt tinymce to address 4 CVEs. Fixed in 6.8.6-tuxcare.4.

Record
CLSA-2026-1781052744
Updated
2026-11-02
OSVCLSA-2026-1783904630 No score

TuxCare security update for tinymce (3 CVEs)

TuxCare rebuilt tinymce to address 3 CVEs. Fixed in 4.9.11-tuxcare.2.

Record
CLSA-2026-1783904630
Updated
2026-11-02
OSVCLSA-2026-1784077492 No score

TuxCare security update for tinymce (3 CVEs)

TuxCare rebuilt tinymce to address 3 CVEs. Fixed in 5.10.9-tuxcare.2.

Record
CLSA-2026-1784077492
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
tinymce
npm
 6.0.0 up to 7.9.3
7.9.3
tinymce
npm
 8.0.0 up to 8.5.1
8.5.1
TinyMCE
NuGet
 6.0.0 up to 7.9.3
7.9.3
TinyMCE
NuGet
 8.0.0 up to 8.5.1
8.5.1
tinymce/tinymce
Packagist
 6.0.0 up to 7.9.3
7.9.3
tinymce/tinymce
Packagist
 8.0.0 up to 8.5.1
8.5.1
tinymce
npm
 Source text: > 0, <= 5.10.9
Not evaluated
TinyMCE
NuGet
 Source text: > 0, <= 5.10.9
Not evaluated
tinymce/tinymce
Packagist
 Source text: > 0, <= 5.10.9
Not evaluated
tinymce
TuxCare:npm
From an advisory covering 4 CVEs
 6.8.6-tuxcare.0 up to 6.8.6-tuxcare.4, plus listed versions
6.8.66.8.6-tuxcare.16.8.6-tuxcare.26.8.6-tuxcare.3
6.8.6-tuxcare.4
Show 12 moreShow less
Affected packages
PackageAffectedFixed
tinymce
TuxCare:npm
From an advisory covering 3 CVEs
 4.9.11-tuxcare.0 up to 4.9.11-tuxcare.2, plus listed versions
4.9.114.9.11-tuxcare.1
4.9.11-tuxcare.2
tinymce
TuxCare:npm
From an advisory covering 3 CVEs
 5.10.9-tuxcare.0 up to 5.10.9-tuxcare.2, plus listed versions
5.10.95.10.9-tuxcare.1
5.10.9-tuxcare.2
tinymce
npm
 through 5.10.9 None known
TinyMCE
NuGet
 through 5.10.9, plus listed versions
3.4.3.23.4.43.4.53.4.73.5.0
Show 45 moreShow less
3.5.0.13.5.13.5.1.13.5.23.5.33.5.43.5.4.13.5.53.5.63.5.73.5.84.0.04.0.14.0.104.0.114.0.134.0.144.0.154.0.164.0.174.0.184.0.194.0.24.0.204.0.214.0.224.0.234.0.244.0.254.0.264.0.274.0.284.0.44.0.54.0.64.0.84.0.94.1.04.1.14.1.104.1.24.1.34.1.44.1.54.1.6
 None known
TinyMCE
NuGet
 6.0.0 up to 7.9.3, plus listed versions
6.0.16.0.26.0.36.1.06.1.1
Show 43 moreShow less
6.1.26.2.06.3.06.3.16.3.26.4.06.4.16.4.26.5.06.5.16.6.26.7.06.7.16.7.26.7.36.8.06.8.16.8.26.8.36.8.46.8.56.8.67.0.07.0.17.1.07.1.17.1.27.2.07.2.17.3.07.4.07.4.17.5.07.5.17.6.07.6.17.7.07.7.17.7.27.8.07.9.07.9.17.9.2
7.9.3
TinyMCE
NuGet
 8.0.0 up to 8.5.1, plus listed versions
8.0.18.0.28.1.08.1.18.1.2
Show 8 moreShow less
8.2.08.2.18.2.28.3.08.3.18.3.28.4.08.5.0
8.5.1
tinymce/tinymce
Packagist
 through 5.10.9, plus listed versions
4.0.04.0.14.0.104.0.114.0.12
Show 45 moreShow less
4.0.134.0.144.0.154.0.164.0.174.0.184.0.194.0.24.0.204.0.214.0.224.0.234.0.244.0.254.0.264.0.274.0.284.0.34.0.44.0.54.0.64.0.74.0.84.0.94.1.04.1.14.1.104.1.24.1.34.1.44.1.54.1.64.1.74.1.84.1.94.2.04.2.14.2.24.2.34.2.44.2.54.2.64.2.74.2.84.3.0
 None known
tinymce/tinymce
Packagist
 6.0.0 up to 7.9.3, plus listed versions
6.0.16.0.26.0.36.1.06.1.1
Show 45 moreShow less
6.1.26.2.06.3.06.3.16.3.26.4.06.4.16.4.26.5.06.5.16.6.06.6.16.6.26.7.06.7.16.7.26.7.36.8.06.8.16.8.26.8.36.8.46.8.56.8.67.0.07.0.17.1.07.1.17.1.27.2.07.2.17.3.07.4.07.4.17.5.07.5.17.6.07.6.17.7.07.7.17.7.27.8.07.9.07.9.17.9.2
7.9.3
tinymce/tinymce
Packagist
 8.0.0 up to 8.5.1, plus listed versions
8.0.18.0.28.1.08.1.18.1.2
Show 8 moreShow less
8.2.08.2.18.2.28.3.08.3.18.3.28.4.08.5.0
8.5.1
tinymce
Ubuntu:16.04:LTS
 All versions, plus listed versions
3.4.8+dfsg0-1
 None known
tinymce
Ubuntu:18.04:LTS
 All versions, plus listed versions
3.4.8+dfsg0-2
 None known
tinymce
Ubuntu:20.04:LTS
 All versions, plus listed versions
3.4.8+dfsg0-2
 None known

Not evaluated means the source gave git commits or a range we can't read, so we can't tell which releases are affected. A fixed version beside it is the source’s own claim.

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHubange-primiterra/CVE-2026-477612026-07-24

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-47761 is a high vulnerability (CVSS 8.7) in Tiny Tinymce, published May 28, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 18th percentile. Fixed in tinymce 7.9.3.

References

This page doesn't list everything

Left out here: 253 versions. The JSON record has them.

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