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TI-2026-51267 Aliases CVE-2026-73058GHSA-6x44-jq26-vpv6

stoatchat before 0.15.0 SSRF via IPv6 unspecified address bypass

Priority HIGH 70CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.

Summary

stoatchat versions before 0.15.0 fail to block the IPv6 unspecified address (::) in the SSRF blocklist, allowing unauthenticated attackers to bypass protections via the /proxy and /embed endpoints. Attackers can craft requests using IPv6 literal syntax to access services on the loopback interface and retrieve sensitive internal content.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00364 30th percentileScored 2026-11-07
Fix Fixed stoatchat (stoatchat): 0.15.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
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
stoatchatstoatchatbefore 0.15.00.15.0Patch availableCNA
  • stoatchat Vendorstoatchat Affected before 0.15.0 Fixed in 0.15.0 Patch available CNA

Remediation

  • Fix · CNA stoatchat (stoatchat) Fixed in 0.15.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    stoatchat 0.15.0

    3 records Highest priority Priority HIGH 2 HIGH, 1 LOW

    Other records, highest priority first

    • TI-2026-51266 stoatchat before 0.15.0 Uncapped SVG Rendering Denial of ServicePriority HIGH 77
    • TI-2026-51268 stoatchat before 0.15.0 Permission Bypass via message_fetchPriority LOW 31
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-73058
  2. 2026-10-03 Alias added: GHSA-6x44-jq26-vpv6

References

Advisory 1

  • TI-2026-45152 stoatchat before 0.13.5 Unauthenticated SSRF via proxy and embed endpoints CVSS 4.0CRITICAL 9.2
  • TI-2026-64832 stoatchat before 0.15.5 Local Filesystem Read via SVG CVSS 4.0HIGH 8.8
  • TI-2026-51266 stoatchat before 0.15.0 Uncapped SVG Rendering Denial of Service CVSS 4.0HIGH 8.7
  • TI-2026-45038 stoatchat < 0.14.0 SSRF via DNS-based IP Blocklist Bypass CVSS 4.0HIGH 7.7
  • TI-2026-64833 stoatchat before 0.15.5 Account Enumeration via Error Location CVSS 4.0MEDIUM 6.9
  • TI-2026-64834 stoatchat before 0.15.5 MFA Brute Force via Insufficient Rate Limiting CVSS 4.0HIGH 8.3
See all 15 →

Sources

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