alerta-server has potential SQL Injection vulnerability in Query String Syntax (q=) API

CVE-2026-34400 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

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

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2026-03-31 23:23:21 UTC
Updated
2026-04-06 17:37:22 UTC
GitHub reviewed
2026-03-31 23:23:21 UTC
NVD published
2026-03-31

EPSS Score

Score Percentile
0.02% 3.69%

CVSS Scores

Base score Version Severity Vector
6.9 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 Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:L)
Exploitation conditions are straightforward and stable.
Attack requirements (AT:N)
No additional preconditions are required beyond normal reachability.
Privileges required (PR:N)
No privileges are required.
User interaction (UI:N)
No user interaction is required.
Vulnerable system confidentiality impact (VC:N)
No confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:L)
Limited integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:N)
No availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N)
No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:N)
No availability impact on subsequent systems.

Identifiers

Type Value
GHSA GHSA-8prr-286p-4w7j ↗
CVE CVE-2026-34400 ↗

CWEs

CWE id Name
CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Credits

  • dakotacody (analyst)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
pip alerta-server < 9.1.0 9.1.0 —

References

cvelogic Threat Intelligence