CVE-2026-63645Public exploitNetwork attack vectorHinoki check available

Unauthenticated credential disclosure via incomplete config redaction

Published Sep 24, 2026 · Updated Sep 24, 2026

Information disclosure in OpenObserve 0.90.2 and earlier allows remote attackers to read deployment secrets via /config/runtime. The unauthenticated handler serializes the full server configuration, while hide_sensitive_fields fails to redact names containing dsn or creds. Network access to the HTTP port is sufficient; PostgreSQL deployments expose database connection strings, while other deployments disclose administrator and infrastructure details.

CVSS severity7.5
High
EPSS probability0.33%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Information disclosure in OpenObserve 0.90.2 and earlier allows remote attackers to read deployment secrets via /config/runtime. The unauthenticated handler serializes the full server configuration, while hide_sensitive_fields fails to redact names containing dsn or creds. Network access to the HTTP port is sufficient; PostgreSQL deployments expose database connection strings, while other deployments disclose administrator and infrastructure details.

The record

CVE
CVE-2026-63645
Published
Sep 24, 2026
Updated
Sep 24, 2026
Vendor
OpenObserve
Product
OpenObserve
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.90.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenObserve · OpenObserveversion=< 0.90.3

Published CVSS scores

7.5OpenObserve GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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