CVE-2026-73058 stoatchat before 0.15.0 SSRF via IPv6 unspecified address bypass
Unauthenticated attackers can bypass SSRF protections using IPv6 unspecified addresses to access internal services and retrieve sensitive data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73058?
CVE-2026-73058 is a medium-severity server-side request forgery vulnerability in stoatchat, published on 16 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-918
Which versions are affected by CVE-2026-73058?
How do I fix CVE-2026-73058?
No fix has been published for CVE-2026-73058 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-73058 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-73058 exists.
Sources
Also known as GHSA-4rmr-77qv-hq47, GHSA-6x44-jq26-vpv6.