AshPostgres ignores attribute multitenancy on the join resource when loading many_to_many and through relationships, returning records related through other tenants' rows

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.0025, the 15th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 31 Oct 2026, 15:25 UTC First seen by agentprime
2. 31 Oct 2026, 15:25 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-gr2r-f49c-9gm2
• OSV: GHSA-gr2r-f49c-9gm2
• github.com/ash-project/ash/security/advisories/GHSA-gr2r-f49c-9gm2
• cna.erlef.org/cves/CVE-2026-115627.html
• github.com/ash-project/ash_postgres/commit/7115bec58678f13b1ac2fb4822a0ba1aea9dbec5
• github.com/ash-project/ash_postgres/commit/8c25c945c39a45299193fe70b09fc2fa2aacac7b
• hex.pm/packages/ash_postgres

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.