CVE-2026-73058
stoatchat before 0.15.0 SSRF via IPv6 unspecified address bypass
- State
- Published
- Severity
- 6.9 Medium
- Published
- Aug 16, 2026
- Updated
- Aug 17, 2026
- Reserved
- Aug 10, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N | VulnCheck |
| 3.1 | 5.8 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
stoatchatstoatchat |
|
References
- GitHub Security Advisory (GHSA-4rmr-77qv-hq47)vendor-advisory
- VulnCheck Advisory: stoatchat before 0.15.0 SSRF via IPv6 unspecified address bypassthird-party-advisory
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