CVE-2026-34748: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in payloadcms payload
A stored Cross-Site Scripting (XSS) vulnerability exists in the admin panel of Payload CMS versions prior to 3.78.0. An authenticated user with write access to a collection could save malicious content that executes in the browser of another user viewing that content. This vulnerability has been patched in version 3.78.0.
AI Analysis
Technical Summary
CVE-2026-34748 is a stored XSS vulnerability (CWE-79) in the Payload CMS admin panel before version 3.78.0. It allows an authenticated user with write permissions to inject malicious scripts into content collections. When other users view this content, the injected script executes in their browsers, potentially compromising confidentiality and integrity. The vulnerability has a CVSS 3.1 score of 8.7, indicating high severity. The issue was resolved in Payload CMS version 3.78.0.
Potential Impact
Successful exploitation could lead to execution of arbitrary scripts in the context of the victim's browser, resulting in potential compromise of user data confidentiality and integrity. The vulnerability requires authenticated write access, limiting exposure to authorized users. There is no indication of availability impact or known exploits in the wild at this time.
Mitigation Recommendations
Upgrade Payload CMS to version 3.78.0 or later, where this vulnerability is patched. No additional mitigation is required once the official fix is applied.
CVE-2026-34748: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in payloadcms payload
Description
A stored Cross-Site Scripting (XSS) vulnerability exists in the admin panel of Payload CMS versions prior to 3.78.0. An authenticated user with write access to a collection could save malicious content that executes in the browser of another user viewing that content. This vulnerability has been patched in version 3.78.0.
CVSS v3.1
Score 8.7high
Affected software
pkg:github/payloadcms/payloadRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-34748 is a stored XSS vulnerability (CWE-79) in the Payload CMS admin panel before version 3.78.0. It allows an authenticated user with write permissions to inject malicious scripts into content collections. When other users view this content, the injected script executes in their browsers, potentially compromising confidentiality and integrity. The vulnerability has a CVSS 3.1 score of 8.7, indicating high severity. The issue was resolved in Payload CMS version 3.78.0.
Potential Impact
Successful exploitation could lead to execution of arbitrary scripts in the context of the victim's browser, resulting in potential compromise of user data confidentiality and integrity. The vulnerability requires authenticated write access, limiting exposure to authorized users. There is no indication of availability impact or known exploits in the wild at this time.
Mitigation Recommendations
Upgrade Payload CMS to version 3.78.0 or later, where this vulnerability is patched. No additional mitigation is required once the official fix is applied.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-30T19:17:10.224Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69cd7b33e6bfc5ba1df4981c
Added to database: 04/01/2026, 20:08:19 UTC
Last enriched: 04/10/2026, 00:02:51 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 118
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