ALPINE-CVE-2026-6475

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Source
https://security.alpinelinux.org/vuln/CVE-2026-6475
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-6475.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-6475
Upstream
  • CVE-2026-6475
Published
2026-05-14T14:16:25Z
Modified
2026-09-14T16:18:08Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

Symlink following in PostgreSQL pg_basebackup plain format and in pg_rewind allows an origin superuser to overwrite local files, e.g. /var/lib/postgres/.bashrc, that hijack the operating system account. It will remain the case that starting the server after these commands implicitly trusts the origin superuser, due to features like shared_preload_libraries. Hence, the attack has practical implications only if one takes relevant action between these commands and server start, like moving the files to a different VM or snapshotting the VM. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

References

Affected packages

Alpine:v3.20
postgresql15

Package

Name
postgresql15
Purl
pkg:apk/alpine/postgresql15?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
15.18-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-6475.json"
postgresql16

Package

Name
postgresql16
Purl
pkg:apk/alpine/postgresql16?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
16.14-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-6475.json"
Alpine:v3.21
postgresql16

Package

Name
postgresql16
Purl
pkg:apk/alpine/postgresql16?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
16.14-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-6475.json"
postgresql17

Package

Name
postgresql17
Purl
pkg:apk/alpine/postgresql17?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
17.10-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-6475.json"
Alpine:v3.22
postgresql16

Package

Name
postgresql16
Purl
pkg:apk/alpine/postgresql16?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
16.14-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-6475.json"
postgresql17

Package

Name
postgresql17
Purl
pkg:apk/alpine/postgresql17?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
17.10-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-6475.json"
Alpine:v3.23
postgresql17

Package

Name
postgresql17
Purl
pkg:apk/alpine/postgresql17?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
17.10-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-6475.json"
postgresql18

Package

Name
postgresql18
Purl
pkg:apk/alpine/postgresql18?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
18.4-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-6475.json"
Alpine:v3.24
postgresql17

Package

Name
postgresql17
Purl
pkg:apk/alpine/postgresql17?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
17.10-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-6475.json"
postgresql18

Package

Name
postgresql18
Purl
pkg:apk/alpine/postgresql18?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
18.4-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-6475.json"