CVE-2026-105854: Payload is a free and open source headless content management system

Q: How do I fix CVE-2026-105854?

payload: upgrade to 3.90.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-105854 being exploited?

CVE-2026-105854 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-105854 affect?

CVE-2026-105854 affects payload. Severity is high (CVSS 7.5). Payload is a free and open source headless content management system. In versions from 3.0.0 before 3.90.0 and canary versions before 4.0.0-canary.34, a malformed multipart request body can cause multipart Content-Type processing to take an

Q: How urgent is CVE-2026-105854?

Priority 38/100. High severity; Remotely exploitable, no login, no user action

Routine

HIGH 7.5REMOTEUPGRADE

CVE-2026-105854 is a high-severity flaw (CVSS 7.5) 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. In versions from 3.0.0 before 3.90.0 and canary versions before 4.0.0-canary.34, a malformed multipart request body can cause multipart Content-Type processing to take an extremely long time, resulting in uncontrolled resource consumption. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 71%)
CISA exploited list	No
Weakness	CWE-400, CWE-1333
Published	2026-10-06
Last modified	2026-10-15

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

Last updated 2026-10-15 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-06 17:17 UTCPublished CVE record published
2026-10-15 00:12 UTCUpdated Record last modified

payloadcms payload UPGRADE

Affected: >= 3.0.0 and < 3.90.0 · 4.0.0 canary0 · 4.0.0 canary1 · 4.0.0 canary10 · 4.0.0 canary11 · 4.0.0 canary12 · 4.0.0 canary13 · 4.0.0 canary14

Fixed in: 3.90.0

Safe to downgrade to: a release before 3.0.0

1. Check installed version

npm ls payload

2. UPGRADE to 3.90.0

npm install payload@">=3.90.0"

3. If no update is available yet, DOWNGRADE to a release before 3.0.0

npm view payload versions npm install payload@"<3.0.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2026-105854?

payload: upgrade to 3.90.0. Exact commands for each OS are on this page.

Is CVE-2026-105854 being exploited?

CVE-2026-105854 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-2026-105854 affect?

CVE-2026-105854 affects payload. Severity is high (CVSS 7.5). Payload is a free and open source headless content management system. In versions from 3.0.0 before 3.90.0 and canary versions before 4.0.0-canary.34, a malformed multipart request body can cause multipart Content-Type processing to take an

How urgent is CVE-2026-105854?

Priority 38/100. High severity; Remotely exploitable, no login, no user action

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-2026-34748 HIGH 8.7 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

References

← Back to latest CVEs