What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-07 · updated 2026-10-06
• Weakness: CWE-918

Description

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.

Affected products

• openobserve: through 0.70.3

References

• https://github.com/openobserve/openobserve/commit/d1a5d8f65b432e2e82f83231390dec7f107e8d75
• https://github.com/openobserve/openobserve/security/advisories/GHSA-gcwf-3p7h-wm79
• https://github.com/openobserve/openobserve/security/advisories/GHSA-gcwf-3p7h-wm79

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