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CVE-2026-63088

HIGH Exploitation: PoC
8.6
CVSS 3.1
Description
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.

Metadata

CVE ID
CVE-2026-63088
State
PUBLISHED
Assigner
VulnCheck
Reserved
2026-07-15 15:45 UTC
Published
2026-07-16 16:40 UTC
Last updated
2026-07-16 18:00 UTC
Primary CWE
CWE-918
Server-Side Request Forgery (SSRF)
Vendor / Product
stoatchat / stoatchat
Sources
cve.org  ·  NVD

Severity & Metrics

8.6 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
yes
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
stoatchat stoatchat — 0 < 0.14.0
Weakness (CWE)
CWESourceDescription
CWE-918 cna Server-Side Request Forgery (SSRF)
CVSS scores (2)
ScoreSeverityVersionSourceVector
8.6 HIGH 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
7.7 HIGH 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
References (4)
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