CVE-2026-55765
Cleartext role passwords in CloudNativePG allow tenant to escalate to superuser and run OS commands.
Is CVE-2026-55765 being exploited?
Not confirmed. CVE-2026-55765 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.29% probability of exploitation in the next 30 days.
How severe is CVE-2026-55765?
CVE-2026-55765 is rated High with a CVSS score of 8.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-55765?
Yes. A fix has been recorded for CVE-2026-55765. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-55765 affect?
CVE-2026-55765 affects CloudNativePG versions prior to 1.28.4 and 1.29.2 (fixed in 1.28.4, 1.29.2, 1.30.0). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-55765?
Upgrade to 1.28.4/1.29.2/1.30.0; disable pg_stat_statements preload or revoke pg_monitor/pg_read_all_stats from tenants.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Untrusted tenant with pg_monitor/pg_read_all_stats and pg_stat_statements preload can recover managed superuser/app passwords, reconnect as superuser, and run OS commands via COPY ... FROM PROGRAM.
Immediate action required
- affected< 1.28.4
- affected>= 1.29.0 and < 1.29.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.