apostrophecms apostrophe up to 4.29.0 User Display Name cross site scripting

Summaryinfo

A vulnerability categorized as problematic has been discovered in apostrophecms apostrophe up to 4.29.0. This affects an unknown part of the component User Display Name Handler. The manipulation results in cross site scripting. This vulnerability is reported as CVE-2026-45014. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, was found in apostrophecms apostrophe up to 4.29.0. Affected is an unknown functionality of the component User Display Name Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. CVE summarizes:

ApostropheCMS is an open-source Node.js content management system. Versions up to and including 4.29.0 are vulnerable to stored cross-site scripting via unsanitized user display name in draft version tooltip. As of time of publication, no known patched versions are available.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-45014 since 05/08/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• apostrophecms

Name

• apostrophe

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7
• 4.8
• 4.9
• 4.10
• 4.11
• 4.12
• 4.13
• 4.14
• 4.15
• 4.16
• 4.17
• 4.18
• 4.19
• 4.20
• 4.21
• 4.22
• 4.23
• 4.24
• 4.25
• 4.26
• 4.27
• 4.28
• 4.29.0

Website

• Product: https://github.com/apostrophecms/apostrophe/

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Once again VulDB remains the best source for vulnerability data.

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