CVE-2026-63088
HIGHstoatchat < 0.14.0 SSRF via DNS-based IP Blocklist Bypass
Title source: cnaDescription
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.
References (4)
Core 4
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-4mcc-p83c-r77q)
https://github.com/stoatchat/stoatchat/security/advisories/GHSA-4mcc-p83c-r77q
Incomplete Fix - GitHub Security Advisory (GHSA-xhww-5g9p-vvq5)
https://github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/stoatchat-ssrf-via-dns-based-ip-blocklist-bypass
Scores
CVSS v3
8.6
EPSS
0.0037
EPSS Percentile
29.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-918
Status
published
Products (1)
stoatchat/stoatchat
< 0.14.0
Published
Jul 16, 2026
Tracked Since
Jul 16, 2026