TinyMCE up to 5.5.x Editor cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in TinyMCE up to 5.5.x. This affects an unknown function of the component Committer. This manipulation causes cross site scripting. This vulnerability is handled as CVE-2024-21911. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in TinyMCE up to 5.5.x. It has been declared as problematic. Affected by this vulnerability is an unknown code of the component Editor. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

TinyMCE versions before 5.6.0 are affected by a stored cross-site scripting vulnerability. An unauthenticated and remote attacker could insert crafted HTML into the editor resulting in arbitrary JavaScript execution in another user's browser.

The weakness was released 01/03/2024 as GHSA-w7jx-j77m-wp65. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2024-21911 since 01/03/2024. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 5.6.0 eliminates this vulnerability.

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Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: TinyMCE 5.6.0

Timelineinfo

01/03/2024 🔍
01/03/2024 +0 days 🔍
01/03/2024 +0 days 🔍
06/11/2025 +525 days 🔍

Sourcesinfo

Advisory: GHSA-w7jx-j77m-wp65
Status: Confirmed

CVE: CVE-2024-21911 (🔍)
GCVE (CVE): GCVE-0-2024-21911
GCVE (VulDB): GCVE-100-249631

Entryinfo

Created: 01/03/2024 17:23
Updated: 06/11/2025 22:14
Changes: 01/03/2024 17:23 (40), 01/23/2024 18:45 (11), 06/11/2025 22:14 (16)
Complete: 🔍
Cache ID: 216::103

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