CVE-2026-55769

CRITICALPre-NVD 9.49.4—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.8% (54th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
9.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 9.4Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

CloudNativePG is a platform designed to manage PostgreSQL databases within Kubernetes environments. Prior to 1.28.4 and 1.29.2, CloudNativePG opened superuser connections without pinning search_path in fillDefaultParameters in pkg/management/postgres/pool/profiles.go. A role holding DATABASE OWNER could create overloaded built-in operators in the public schema and change the database or role search_path, causing instance-manager introspection queries such as SELECT COUNT(*) > 0 FROM pg_catalog.pg_extension WHERE extname = $1 to execute attacker-controlled functions as the postgres superuser. The same trust issue affected direct sql.Open("pgx", ...) callsites and the public.user_search SECURITY DEFINER function, enabling PostgreSQL superuser access, operating system command execution through COPY ... FROM PROGRAM, and access to the pod ServiceAccount token. This issue is fixed in versions 1.28.4, 1.29.2, and 1.30.0.

CVSS v3
9.4
EG Score
9.4CRITICALmedium confidence
EG Risk
58
EG Risk 58/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity94% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.8%
EPSS %ILE
54th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 20, 2026

Last Modified

September 18, 2026

Advisory Details (8)

Auto-updated Oct 2, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
githubMentions a patch (unverified)

Overriding operators can lead to privilege escalation in CloudNativePG for SQL queries without a fixed `search_path` · Advisory · cloudnative-pg/cloudnative-pg · GitHub

Affected: 1.30.0, 1.29.2, and 1.28.4.

https://github.com/cloudnative-pg/cloudnative-pg/security/advisories/GHSA-x8c2-3p4r-v9r6
github_release Patch Available

v1.30.0

Patch available: cloudnative-pg/cloudnative-pg v1.30.0

https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.30.0
github_release Patch Available

v1.29.2

Patch available: cloudnative-pg/cloudnative-pg v1.29.2

https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.29.2
github_release Patch Available

v1.28.4

Patch available: cloudnative-pg/cloudnative-pg v1.28.4

https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.28.4
github_pr

fix(security): pin `search_path` on operator-issued connections

Fix merged in cloudnative-pg/cloudnative-pg PR #10774 on 2026-06-09 — awaiting tagged release

https://github.com/cloudnative-pg/cloudnative-pg/pull/10774
github_commit

commit e0e2d53adbd9 (cloudnative-pg/cloudnative-pg)

Fix landed in cloudnative-pg/cloudnative-pg commit e0e2d53adbd9 — awaiting tagged release

https://github.com/cloudnative-pg/cloudnative-pg/commit/e0e2d53adbd907a61f583b1431904b5969f3fd22
github_commit

commit db38f4d80315 (cloudnative-pg/cloudnative-pg)

Fix landed in cloudnative-pg/cloudnative-pg commit db38f4d80315 — awaiting tagged release

https://github.com/cloudnative-pg/cloudnative-pg/commit/db38f4d80315c8f1b21bf511ef0f28871820c14d
github_commit

commit 02b5c6289b76 (cloudnative-pg/cloudnative-pg)

Fix landed in cloudnative-pg/cloudnative-pg commit 02b5c6289b76 — awaiting tagged release

https://github.com/cloudnative-pg/cloudnative-pg/commit/02b5c6289b7609dc87fcb1ae9c113160e3d43308

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 53× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-09 20:07 UTCEPSS rescore
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  1. 2026-09-27 13:48 UTCEPSS rescore
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  69. 2026-08-20 21:56 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-55769?
CVE-2026-55769 is a critical vulnerability published on August 20, 2026. CloudNativePG is a platform designed to manage PostgreSQL databases within Kubernetes environments. Prior to 1.28.4 and 1.29.2, CloudNativePG opened superuser connections without pinning searchpath in fillDefaultParameters in pkg/management/postgres/pool/profiles.go. A role holding DATABASE OWNER…
When was CVE-2026-55769 disclosed?
CVE-2026-55769 was first published on August 20, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55769 actively exploited?
CVE-2026-55769 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (54th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-55769?
CVE-2026-55769 has a CVSS base score of 9.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-55769?
A fix for CVE-2026-55769 is available: update to the fixed version the vendor names in its advisory.

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