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CVE-2026-105856

HIGHCVSS 8.6/10

Last modified

CVE-2026-105856 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. Payload is a free and open source headless content management system. Prior to 3.90.0 and 4.0.0-canary.34, an attacker with read and create or update access to a collection containing a json field or a blocks field with blocksAsJSON enabled can inject SQL through a crafted field path and operators.

Description

Payload is a free and open source headless content management system. Prior to 3.90.0 and 4.0.0-canary.34, an attacker with read and create or update access to a collection containing a json field or a blocks field with blocksAsJSON enabled can inject SQL through a crafted field path and operators. Collections without those fields are not affected, and richText fields are not affected. The SQLite packages are fixed in versions 3.90.0 and 4.0.0-canary.34, and the Postgres packages are fixed in version 3.73.0.

Metrics

CVSS 4.0
8.6/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
payloadcmspayload>= 3.0.0, < 3.90.0; >= 4.0.0-canary.0, < 4.0.0-canary.34
@payloadcmsdb-d1-sqlite>= 3.0.0, < 3.90.0; >= 4.0.0-canary.0, < 4.0.0-canary.34
@payloadcmsdb-postgres>= 3.0.0 < 3.73.0
@payloadcmsdb-sqlite>= 3.0.0, < 3.90.0; >= 4.0.0-canary.0, < 4.0.0-canary.34
@payloadcmsdb-vercel-postgres>= 3.0.0 < 3.73.0

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-105856?
Payload is a free and open source headless content management system. Prior to 3.90.0 and 4.0.0-canary.34, an attacker with read and create or update access to a collection containing a json field or a blocks field with blocksAsJSON enabled can inject SQL through a crafted field path and operators. Collections without those fields are not affected, and richText fields are not affected. The SQLite packages are fixed in versions 3.90.0 and 4.0.0-canary.34, and the Postgres packages are fixed in version 3.73.0.
How severe is CVE-2026-105856?
CVE-2026-105856 has a CVSS score of 8.6/10 (HIGH severity).
How do I fix CVE-2026-105856?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST