CVE-2026-78699
- Source
- https://cve.org/CVERecord?id=CVE-2026-78699
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-78699.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-78699
- Aliases
-
- EEF-CVE-2026-78699
- GHSA-6fqq-j9c4-5766
- Published
- 2026-08-30T15:13:23.875Z
- Modified
- 2026-09-02T03:30:34.623259307Z
- Severity
-
- 7.2 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- rename_tenant returns :ok on a failed rename, enabling cross-tenant access in AshPostgres
- Details
-
Unchecked Return Value vulnerability in ash-project ash_postgres allows a user who can drive a tenant rename to a name that collides with an existing tenant's schema to have their tenant record repointed at that other tenant's live schema, gaining access to its data.
AshPostgres.MultiTenancy.rename_tenant/3 issues the ALTER SCHEMA ... RENAME TO ... with the non-raising Ecto.Adapters.SQL.query/2, discards its {:ok, _} | {:error, } result, and unconditionally returns :ok. PostgreSQL rejects the rename when the target schema already exists (and on insufficient privilege or lock timeout), but that failure never reaches the caller. The calling managetenant update action therefore sees success and commits the tenant row with the new name, which is the schema of a different existing tenant, so subsequent reads and writes for that tenant run against the other tenant's data.
This issue affects ash_postgres: from 0.25.0 before 2.13.0.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78699.json", "unresolved_ranges": [ { "source": "AFFECTED_FIELD", "extracted_events": [ { "introduced": "0.25.0" }, { "fixed": "2.13.0" }, { "introduced": "03510dae24020e302558ef947be7ea874a9ce756" }, { "fixed": "8544ab15fe45784553c2d2da8ee1a388eee0174b" } ] }, { "source": "CPE_FIELD", "extracted_events": [ { "introduced": "0.25.0" }, { "fixed": "2.13.0" } ] }, { "source": "DESCRIPTION", "extracted_events": [ { "introduced": "0.25.0" }, { "fixed": "2.13.0" } ] } ], "cna_assigner": "EEF", "cwe_ids": [ "CWE-252" ] }- References
-
- https://cna.erlef.org/cves/CVE-2026-78699.html
- https://github.com
- https://osv.dev/vulnerability/EEF-CVE-2026-78699
- https://repo.hex.pm
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78699.json
- https://github.com/ash-project/ash_postgres/security/advisories/GHSA-6fqq-j9c4-5766
- https://nvd.nist.gov/vuln/detail/CVE-2026-78699
- https://github.com/ash-project/ash_postgres/commit/8544ab15fe45784553c2d2da8ee1a388eee0174b
- https://github.com/ash-project/ash_postgres
Affected packages
Git / github.com/ash-project/ash_postgres
Affected versions
v0.*
v0.1.2
v0.1.3
v0.1.4
v0.10.0
v0.11.0
v0.11.2
v0.12.0
v0.12.1
v0.13.0
v0.14.0
v0.16.0
v0.16.1
v0.18.0
v0.19.0
v0.2.0
v0.2.1
v0.20.0
v0.20.1
v0.21.0
v0.22.0
v0.22.1
v0.23.0
v0.23.1
v0.23.2
v0.24.0
v0.25.0
v0.25.1
v0.25.2
v0.25.3
v0.25.4
v0.25.5
v0.26.0
v0.26.1
v0.26.2
v0.27.0
v0.28.0
v0.28.1
v0.29.1
v0.29.2
v0.29.3
v0.29.4
v0.29.5
v0.29.6
v0.3.0
v0.30.0
v0.30.1
v0.31.0
v0.31.1
v0.32.0
v0.32.1
v0.32.2
v0.33.0
v0.33.1
v0.34.0
v0.34.1
v0.34.2
v0.34.3
v0.34.4
v0.34.5
v0.34.6
v0.34.7
v0.35.0
v0.35.1
v0.35.4
v0.35.5
v0.36.0
v0.36.1
v0.36.2
v0.36.3
v0.36.4
v0.36.5
v0.37.0
v0.37.1
v0.37.2
v0.37.3
v0.37.4
v0.37.6
v0.37.7
v0.37.8
v0.38.0
v0.38.1
v0.38.10
v0.38.11
v0.38.2
v0.38.3
v0.38.4
v0.38.5
v0.38.6
v0.38.7
v0.38.8
v0.38.9
v0.39.0-rc0
v0.4.0
v0.40.0-rc1
v0.40.0-rc2
v0.40.0-rc3
v0.40.0-rc4
v0.40.0-rc5
v0.40.1
v0.40.10
v0.40.11
v0.40.2
v0.40.3
v0.40.4
v0.40.5
v0.40.6
v0.40.7
v0.40.8
v0.40.9
v0.41.0-rc.1
v0.41.0-rc.2
v0.41.0-rc.3
v0.41.0-rc.4
v0.41.0-rc.5
v0.41.0-rc.6
v0.41.0-rc.7
v0.41.0-rc.8
v0.41.0-rc.9
v0.41.0-rc0
v0.41.1
v0.41.2
v0.41.3
v0.41.4
v0.41.5
v0.41.6
v0.41.7
v0.42.0-rc.0
v0.42.0-rc.1
v0.42.0-rc.2
v0.42.0-rc.3
v0.42.0-rc.4
v0.42.0-rc.5
v0.42.0-rc.6
v0.42.0-rc.7
v0.43.0
v0.5.0
v0.6.0
v0.7.0
v0.8.0
v0.9.0
v1.*
v1.0.0
v1.0.0-rc.0
v1.0.0-rc.1
v1.0.0-rc.2
v1.0.0-rc.3
v1.0.0-rc.4
v1.0.0-rc.5
v1.0.0-rc.6
v1.0.0-rc.7
v1.0.0-rc.8
v1.0.0-rc.9
v1.1.0
v1.1.1
v1.1.2
v1.1.3
v1.2.0
v1.2.0-rc.0
v1.2.0-rc.1
v1.2.1
v1.2.2
v1.2.3
v1.2.4
v1.2.5
v1.2.6
v1.3.0
v1.3.0-rc.0
v1.3.0-rc.1
v1.3.0-rc.2
v1.3.0-rc.3
v1.3.0-rc.4
v1.3.1
v1.3.10
v1.3.11
v1.3.12
v1.3.13
v1.3.14
v1.3.15
v1.3.16
v1.3.17
v1.3.18
v1.3.19
v1.3.2
v1.3.20
v1.3.21
v1.3.22
v1.3.23
v1.3.24
v1.3.25
v1.3.26
v1.3.27
v1.3.28
v1.3.29
v1.3.3
v1.3.30
v1.3.31
v1.3.32
v1.3.33
v1.3.34
v1.3.35
v1.3.36
v1.3.37
v1.3.38
v1.3.39
v1.3.4
v1.3.40
v1.3.41
v1.3.42
v1.3.43
v1.3.44
v1.3.45
v1.3.46
v1.3.47
v1.3.48
v1.3.49
v1.3.5
v1.3.50
v1.3.51
v1.3.53
v1.3.54
v1.3.55
v1.3.56
v1.3.57
v1.3.58
v1.3.59
v1.3.6
v1.3.60
v1.3.61
v1.3.62
v1.3.63
v1.3.64
v1.3.65
v1.3.66
v1.3.67
v1.3.68
v1.3.8
v1.3.9
v1.4.0
v1.5.0
v1.5.1
v1.5.10
v1.5.11
v1.5.12
v1.5.13
v1.5.14
v1.5.15
v1.5.16
v1.5.17
v1.5.19
v1.5.2
v1.5.20
v1.5.21
v1.5.22
v1.5.3
v1.5.4
v1.5.5
v1.5.6
v1.5.7
v1.5.8
v1.5.9
v2.*
v2.0.0-rc.0
v2.0.0-rc.1
v2.0.0-rc.10
v2.0.0-rc.11
v2.0.0-rc.12
v2.0.0-rc.13
v2.0.0-rc.14
v2.0.0-rc.15
v2.0.0-rc.2
v2.0.0-rc.3
v2.0.0-rc.4
v2.0.0-rc.5
v2.0.0-rc.6
v2.0.0-rc.7
v2.0.0-rc.8
v2.0.0-rc.9
v2.0.10
v2.0.11
v2.0.12
v2.0.2
v2.0.3
v2.0.4
v2.0.7
v2.0.8
v2.0.9
v2.1.1
v2.1.10
v2.1.11
v2.1.12
v2.1.13
v2.1.14
v2.1.15
v2.1.17
v2.1.18
v2.1.19
v2.1.2
v2.1.3
v2.1.4
v2.1.5
v2.1.6
v2.1.8
v2.1.9
v2.10.0
v2.11.0
v2.12.0
v2.2.0
v2.2.1
v2.2.2
v2.2.3
v2.2.4
v2.2.5
v2.3.0
v2.3.1
v2.4.0
v2.4.1
v2.4.10
v2.4.11
v2.4.12
v2.4.13
v2.4.14
v2.4.16
v2.4.17
v2.4.18
v2.4.19
v2.4.2
v2.4.20
v2.4.21
v2.4.22
v2.4.3
v2.4.4
v2.4.5
v2.4.6
v2.4.7
v2.4.8
v2.4.9
v2.5.0
v2.5.1
v2.5.10
v2.5.11
v2.5.12
v2.5.13
v2.5.14
v2.5.15
v2.5.16
v2.5.17
v2.5.18
v2.5.19
v2.5.2
v2.5.20
v2.5.21
v2.5.22
v2.5.3
v2.5.4
v2.5.5
v2.5.6
v2.5.7
v2.5.8
v2.5.9
v2.6.0
v2.6.1
v2.6.10
v2.6.11
v2.6.12
v2.6.13
v2.6.14
v2.6.15
v2.6.16
v2.6.17
v2.6.18
v2.6.19
v2.6.2
v2.6.20
v2.6.21
v2.6.22
v2.6.23
v2.6.24
v2.6.25
v2.6.26
v2.6.27
v2.6.28
v2.6.29
v2.6.3
v2.6.30
v2.6.31
v2.6.32
v2.6.4
v2.6.5
v2.6.6
v2.6.7
v2.6.8
v2.6.9
v2.7.0
v2.8.0
v2.9.0
v2.9.1