CVE-2026-39361 HIGH

CVE-2026-39361: OpenObserve has a SSRF Protection Bypass via IPv6 Bracket Notation in validate_enrichment_url

Vendor Openobserve
Product openobserve
Weakness CWE-918 · SSRF
Published April 7, 2026
Last update April 9, 2026

CVSS base score

7.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

What the vulnerability does

01Description

OpenObserve is a cloud-native observability platform. In 0.70.3 and earlier, the validate_enrichment_url function in src/handler/http/request/enrichment_table/mod.rs fails to block IPv6 addresses because Rust's url crate returns them with surrounding brackets (e.g. "[::1]" not "::1"). An authenticated attacker can reach internal services blocked from external access. On cloud deployments this enables retrieval of IAM credentials via AWS IMDSv1 (169.254.169.254), GCP metadata, or Azure IMDS. On self-hosted deployments it allows probing internal network services.

Key dates

02Disclosure timeline

April 7, 2026 CVE published
April 9, 2026 Record updated

Related vulnerabilities

04Related CVE