CVE-2026-58225 elixir-ecto CVE debrief

Who should care

Developers and administrators using elixir-ecto postgrex versions from 0.16.0 before 0.22.3 should be aware of this vulnerability and take necessary actions to mitigate it. This includes validating and sanitizing user input for LISTEN channel names and implementing compensating controls to detect and prevent SQL injection attacks.

Technical summary

The vulnerability exists in the Postgrex.Notifications module, where the quote_channel/1 function does not escape the $$ dollar-quote delimiter. This allows an attacker to inject SQL into the reconnect replay query, causing a denial of service of the notification connection. The vulnerability can be exploited by passing untrusted input as a channel name to Postgrex.Notifications.listen/3. The double-quote doubling prevents forming a fully valid injected statement, so arbitrary SQL execution is not possible, but the corrupted query reliably breaks the shared notification connection for all tenants.

Defensive priority

Medium

Recommended defensive actions

• Update postgrex to version 0.22.3 or later
• Validate and sanitize user input for LISTEN channel names
• Implement compensating controls to detect and prevent SQL injection attacks
• Review relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed

Evidence notes

The vulnerability was reported by an unknown source and is described in the CVE record. The NVD entry is currently Received. Further verification is needed to confirm affected scope and severity. Defenders should review the official advisory and CVE record for more information.

Official resources