High severity · published Aug 20, 2026
CVE-2026-55765
CloudNativePG: Cleartext role passwords recorded in pg_stat_statements allow privileged tenant roles to recover the PostgreSQL superuser credential and achieve RCE in the database pod
8.5
CVSS
0.5%
EPSS
No
On KEV
Description
CloudNativePG is a platform designed to manage PostgreSQL databases within Kubernetes environments. Prior to 1.28.4 and 1.29.2, CloudNativePG embedded cleartext role passwords in `ALTER ROLE` and `CREATE ROLE` statements generated by SetUserPassword in pkg/management/postgres/utils/roles.go and appendPasswordOption in internal/management/controller/roles/postgres.go. When pg_stat_statements was preloaded with track_utility enabled and an untrusted tenant held pg_monitor or pg_read_all_stats, the tenant could recover platform-managed superuser or application-owner passwords, reconnect through enabled superuser TCP access, and execute operating system commands in the database pod with `COPY ... FROM PROGRAM`. Clusters using SCRAM-SHA-256 verifiers in managed-role Secrets were not affected. This issue is fixed in versions 1.28.4, 1.29.2, and 1.30.0.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CL
cloudnative-pg · cloudnative-pg
< 1.28.4; >= 1.29.0, < 1.29.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-55765
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-55765
github.com
https://github.com/cloudnative-pg/cloudnative-pg/commit/2f0342747e1f160425b9d51753c0069b0d6117d5
github.com
https://github.com/cloudnative-pg/cloudnative-pg/commit/3cd5af5d388c26758acf13c19ea806b4bcebb3fe
github.com
https://github.com/cloudnative-pg/cloudnative-pg/commit/9a13573dbe3d78721b7ea92141e6d2324a2c0ef0
github.com
https://github.com/cloudnative-pg/cloudnative-pg/pull/10724
github.com
https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.28.4
github.com
https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.29.2
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