CVE-2026-34749

Description

### Impact A Cross-Site Request Forgery (CSRF) vulnerability existed in the authentication flow. Under certain conditions, the configured CSRF protection could be bypassed, allowing cross-site requests to be made. Consumers are affected if ALL of these are true: - Payload version **< v3.79.1** - `serverURL` is configured ### Patches This vulnerability has been patched in **v3.79.1**. Additional validation has been added to the authentication flow. Consumers should upgrade to **v3.79.1** or later. ### Workarounds There is no complete workaround without upgrading. If consumers cannot upgrade immediately, setting `cookies.sameSite` to `'Strict'` will prevent the session cookie from being sent cross-site. However, this will also require users to re-authenticate when navigating to the application from external links (e.g. email, other sites).

How to fix CVE-2026-34749

To remediate CVE-2026-34749, upgrade the affected package to a fixed version below.

• —upgrade to 3.79.1 or later

Is CVE-2026-34749 being exploited?

Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• from 0, < 3.79.1

CVSS scores

References (4)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2026-34749
• PATCHgithub.com/payloadcms/payload
• WEBgithub.com/payloadcms/payload/releases/tag/v3.79.1
• WEBgithub.com/payloadcms/payload/security/advisories/GHSA-p6mr-xf3r-ghq4