CVE-2026-34748: Payload is a free and open source headless content management system

Routine

HIGH 8.7UPGRADE

CVE-2026-34748 is a high-severity flaw (CVSS 8.7) affecting payload. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Payload is a free and open source headless content management system. Prior to version 3.78.0 in @payloadcms/next, a stored Cross-Site Scripting (XSS) vulnerability existed in the admin panel. An authenticated user with write access to a collection could save content that, when viewed by another user, would execute in their browser. This issue has been patched in version 3.78.0.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.7 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-04-01
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: payloadcms

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-01 20:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

payloadcms payload UPGRADE

Affected: < 3.78.0

Fixed in: 3.78.0

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls payload

2. UPGRADE to 3.78.0

npm install payload@">=3.78.0"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-34748?

payload: upgrade to 3.78.0. Exact commands for each OS are on this page.

Is CVE-2026-34748 being exploited?

CVE-2026-34748 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-34748 affect?

CVE-2026-34748 affects payload. Severity is high (CVSS 8.7). Payload is a free and open source headless content management system. Prior to version 3.78.0 in @payloadcms/next, a stored Cross-Site Scripting (XSS) vulnerability existed in the admin panel. An authenticated user with write access to a co

How urgent is CVE-2026-34748?

Priority 36/100. High severity

Related CVEs

CVE-2026-34751 CRITICAL 9.1 UPGRADE Payload is a free and open source headless content management system
CVE-2026-34747 HIGH 8.5 UPGRADE Payload is a free and open source headless content management system
CVE-2026-34746 HIGH 7.7 UPGRADE Payload is a free and open source headless content management system
CVE-2026-34749 MEDIUM 5.4 UPGRADE Payload is a free and open source headless content management system
CVE-2026-34750 MEDIUM 6.5 UPGRADE Payload is a free and open source headless content management system

References

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