Postgrex: Channel-name SQL injection in `Postgrex.Notifications.listen/3` — CVE-2026-32687

Summary

### Summary SQL injection in `Postgrex.Notifications.listen/3`: the `channel` argument is interpolated straight into `LISTEN "..."` / `UNLISTEN "..."` without escaping the `"` character. Any caller that lets a user influence the channel name (e.g. a pub/sub bridge that uses a tenant id or topic slug as the channel) and the name is not sanitized can execute arbitrary SQL on the notifications connection. Only those…

Product

erlang: postgrex

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

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