# CVE-2026-105856: Payload: SQL injection in SQLite/Postgres

> Attackers with specific collection access can inject SQL via crafted field paths in Payload CMS, potentially reading or modifying data.

- **Severity:** High 8.6 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 6 Oct 2026
- **Updated:** 6 Oct 2026

## What is CVE-2026-105856?

CVE-2026-105856 is a high-severity SQL injection vulnerability in @payloadcms db-d1-sqlite, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official 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.

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command)

## Which versions are affected by CVE-2026-105856?

It affects 1 product.


Products: Payloadcms Payload.

## How do I fix CVE-2026-105856?

Upgrade to a fixed version.

## Is CVE-2026-105856 being exploited?

There is no known exploitation of CVE-2026-105856 in the wild and no public exploit code.

## Other vulnerabilities in @payloadcms db-d1-sqlite

- [CVE-2026-105857](https://insights.sbomify.com/CVE-2026-105857/): Payload: RCE in Payload Form Builder (critical 10.0)
- [CVE-2026-105859](https://insights.sbomify.com/CVE-2026-105859/): Payload: Unauthorized update to collection documents (critical 9.8)
- [CVE-2026-25544](https://insights.sbomify.com/CVE-2026-25544/): Payload has an SQL Injection in JSON/RichText Queries on PostgreSQL/SQLite Adapters (critical 9.8)
- [CVE-2022-27952](https://insights.sbomify.com/CVE-2022-27952/): Unrestricted Upload of File with Dangerous Type in Payload (critical 9.8)
- [CVE-2026-105851](https://insights.sbomify.com/CVE-2026-105851/): Payload: Field access control bypass on auth collections (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-105856 and fix it if it is affected.

What it is: CVE-2026-105856 is a high-severity SQL injection vulnerability in @payloadcms db-d1-sqlite, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-105856 in the wild and no public exploit code.

Affected product: @payloadcms db-d1-sqlite. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-105856/ (Markdown: https://insights.sbomify.com/CVE-2026-105856/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-105856
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-105856
- OSV: https://osv.dev/vulnerability/CVE-2026-105856

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-105856/
Summaries are generated and may contain mistakes; the official description above is the record.