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TI-2026-28348 Aliases CVE-2026-39361

OpenObserve has a SSRF Protection Bypass via IPv6 Bracket Notation in validate_enrichment_url

Priority HIGH 67CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0027 19th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
openobserveopenobserveup to 0.70.3—No fix listedCNA
  • openobserve Vendoropenobserve Affected up to 0.70.3 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openobserve:openobserve:*:*:*:*:*:*:*:*up to 0.70.3Vulnerableopenobserve
  • cpe:2.3:a:openobserve:openobserve:*:*:*:*:*:*:*:* Versions up to 0.70.3 Vulnerable ·openobserve

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-39361

References

Exploit 1

Patch 1

  • TI-2024-16347 OpenObserve Privilege Escalation Vulnerability in Users API CVSS 3.1CRITICAL 10.0
  • TI-2024-27852 OpenObserve stored XSS vulnerability may lead to complete account takeover CVSS 3.1HIGH 8.8
  • TI-2024-16561 OpenObserve Unauthorized Access Vulnerability in Users API CVSS 3.1CRITICAL 9.1
  • TI-2024-27853 OpenObserve Cross-site Scripting (XSS) vulnerability in `openobserve/web/src/views/MemberSubscription.vue` CVSS 3.1HIGH 7.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences