Information disclosure in Openobserve
CVE-2026-63645
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.
Vulnerability class: Information Disclosure
Published .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Openobserve — versions < 0.90.3
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-63645?
- CVE-2026-63645 is a high-severity vulnerability in Openobserve, classified under Information Disclosure. CVSS score: 7.5/10. Published 2026-09-24.
- How severe is CVE-2026-63645?
- High severity. CVSS v3 base score is 7.5 out of 10.