CVE-2026-45288: Marten has an SQL injection vulnerability in its full-text search regConfig parameter

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-28 · updated 2026-07-21
Weakness: CWE-89

Description

Marten is a .NET Transactional Document DB and Event Store on PostgreSQL. Prior to 8.36.1, Marten's full-text search APIs interpolated the user-supplied regConfig parameter directly into the generated SQL without parameterization or validation, making every code path that exposes regConfig to untrusted input a SQL injection sink. This vulnerability is fixed in 8.36.1.

Affected products

JasperFx marten: before 8.36.1

References

https://github.com/JasperFx/marten/commit/626249656829860b9c55895b5b6046b61a2a695f
https://github.com/JasperFx/marten/pull/4343
https://github.com/JasperFx/marten/security/advisories/GHSA-vmw2-qwm8-x84c

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