OpenObserve: Unauthenticated /config/runtime endpoint exposes PostgreSQL database credentials (CVE-2026-63645) | HOL Guard CVE

High · CVSS 7.5CVE-2026-63645

OpenObserve: Unauthenticated /config/runtime endpoint exposes PostgreSQL database credentials

Answer in brief

CVE-2026-63645 records a High severity (CVSS 7.5) vulnerability in OpenObserve: Unauthenticated /config/runtime endpoint exposes PostgreSQL database credentials. The current sources do not mark it as known exploited. The current feed maps openobserve/openobserve (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 24, 2026Updated Sep 24, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 24, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps openobserve/openobserve (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
openobserve/openobservegeneric	<0.90.3	0.90.3

Recommended response

Check inventory. Check lockfiles and deployed manifests for openobserve/openobserve.
Review the reported fix. Update openobserve/openobserve to 0.90.3 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

OpenObserve is a cloud-native observability platform. Prior to 0.90.3, OpenObserve registers the /config/runtime endpoint without authentication and serializes the complete server configuration after applying the hide_sensitive_fields keyword filter. The filter does not recognize dsn or creds field names, so meta_postgres_dsn, meta_postgres_ro_dsn, meta_ddl_dsn, and usage_reporting_creds can be returned in plaintext to an unauthenticated network client. PostgreSQL deployments can expose database credentials, and the same response can disclose the root administrator email address, internal NATS address, filesystem layout, and other deployment details. This issue is fixed in version 0.90.3.

Quoted source text, attributed separately from HOL analysis.