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TI-2026-45152 Aliases CVE-2026-63306GHSA-j5jq-jcvc-gxxc

stoatchat before 0.13.5 Unauthenticated SSRF via proxy and embed endpoints

Priority HIGH 79CWE-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
High · 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 before 0.13.5 contains an unauthenticated server-side request forgery vulnerability in the /proxy and /embed endpoints that accept arbitrary URLs without DNS resolution filtering or private IP range validation. Attackers can enumerate internal services, fingerprint applications, and reach instance metadata endpoints by supplying malicious URLs or leveraging redirect chains to access internal infrastructure.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00305 23rd percentileScored 2026-11-07
Fix Fixed stoatchat (stoatchat): 0.13.5

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 0.13.50.13.5Patch availableCNA
  • stoatchat Vendorstoatchat Affected before 0.13.5 Fixed in 0.13.5 Patch available CNA

Remediation

  • Fix · CNA stoatchat (stoatchat) Fixed in 0.13.5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-63306
  2. 2026-10-03 Alias added: GHSA-j5jq-jcvc-gxxc

References

Advisory 1

  • 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-2026-51267 stoatchat before 0.15.0 SSRF via IPv6 unspecified address bypass 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