CVE-2026-63088CWE-918ssrf

CVE-2026-63088

High · published July 16, 2026

CVSS v3.1
8.6
EPSS
1%
Percentile
42.3
In the wild
Unconfirmed
What it is

stoatchat before 0.14.0 contains a server-side request forgery (SSRF) vulnerability that allows unauthenticated network-accessible attackers to bypass the DNS-based IP blocklist by exploiting incomplete address validation in the url_is_blacklisted function, which inspects only the first resolved address while the underlying HTTP client iterates all cached addresses.

The record
Technical detail
CVSS v3.1
8.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00506 · 42.3th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-07-16T21:16Z
References (5)
https://github.com/stoatchat/stoatchat/releases/tag/v0.14.0 · [email protected]https://github.com/stoatchat/stoatchat/security/advisories/GHSA-4mcc-p83c-r77q · [email protected]https://github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5 · [email protected]https://www.vulncheck.com/advisories/stoatchat-ssrf-via-dns-based-ip-blocklist-bypass · [email protected]https://github.com/stoatchat/stoatchat/security/advisories/GHSA-4mcc-p83c-r77q · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 16 JUL 16:40Z
    stoatchat < 0.14.0 SSRF via DNS-based IP Blocklist Bypass
    cvelistv5