CVE-2026-34400
alerta-server has potential SQL Injection vulnerability in Query String Syntax (q=) API
Description
### Impact The Query string search API (q=) was vulnerable to SQL injection via the Postgres query parser, which built WHERE clauses by interpolating user-supplied search terms directly into SQL strings via f-strings. ### Patches Fixed in v9.1.0. The Postgres query parser now uses parameterized queries with %(name)s placeholders passed to psycopg2's cursor.execute(), preventing SQL injection through the ?q= parameter. The MongoDB backend was not affected. ### Workarounds Upgrade to v9.1.0 or later. If unable to upgrade, deploy a proxy in front of the Alerta API to sanitize the q= parameter. ### Resources https://github.com/alerta/alerta/pull/712/files https://owasp.org/www-community/attacks/SQL_Injection
How to fix CVE-2026-34400
To remediate CVE-2026-34400, upgrade the affected package to a fixed version below.
- —upgrade to 9.1.0 or later
Is CVE-2026-34400 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 9.1.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N |