EUVD-2026-38115
GHSA-383x-vh5q-x2q9
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable via web UI (AV:N, AC:L); requires organization admin role (PR:L); scope change (S:C) because SSRF crosses into internal systems beyond the application boundary; limited confidentiality and integrity impact from error disclosure and potential internal HTTP manipulation; no availability impact.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
2DescriptionCVE.org
Capgo before 12.128.2 contains a server-side request forgery vulnerability in webhook URL validation that allows loopback and internal addresses. Organization admins can configure webhooks pointing to localhost or 127.0.0.1, and when triggered, the backend performs outbound requests to these addresses with error responses disclosed to users.
AnalysisAI
Server-side request forgery in Capgo's webhook URL validation exposes internal infrastructure to organization admins who can direct the backend to issue HTTP requests against loopback and private addresses (localhost, 127.0.0.1). All Capgo versions prior to 12.128.2 are affected per the GitHub Security Advisory GHSA-48hc-53hv-6x3f. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated organization admin account on the target Capgo instance - the webhook configuration feature is scoped to this role and is not accessible to unauthenticated users or lower-privilege members. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N) scores 5.3, reflecting a network-reachable flaw requiring low-privilege authenticated access with no attack complexity or special prerequisites. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An organization admin with legitimate Capgo access navigates to webhook settings and registers a webhook URL of http://127.0.0.1:2019/config (targeting a Caddy admin API) or http://169.254.169.254/latest/meta-data/iam/security-credentials/ in a cloud environment. When a Capgo deployment event triggers the webhook, the backend server issues an HTTP GET to the specified address and surfaces the response or error details back to the admin's session, revealing internal service configurations or cloud IAM role credentials. … |
| Remediation | Upgrade Capgo to version 12.128.2 or later, which resolves the SSRF by implementing proper webhook URL validation that rejects loopback and internal address ranges. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Authentication bypass in Capgo before 12.128.2 lets remote unauthenticated attackers mint arbitrary API keys by tamperin
Cross-domain SSO account takeover in Capgo before 12.128.2 allows an attacker with enterprise org admin access and a mal
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Authentication bypass in Capgo prior to version 12.128.2 lets attackers defeat email-based OTP verification by tampering
Rate-limit bypass in Capgo versions prior to 12.128.2 lets remote unauthenticated attackers flood the channel_self endpo
Cross-tenant data poisoning in Supabase Capgo before 12.128.2 allows remote unauthenticated attackers to corrupt billing
Server-side privilege escalation in Capgo before 12.128.2 lets authenticated users holding build permissions abuse a pat
Unauthenticated information disclosure in Capgo before 12.128.2 lets remote attackers query the /functions/v1/channel_se
Account takeover in Capgo before 12.128.2 stems from a password-change endpoint that omits current-password validation (
Information disclosure in Capgo (Capacitor live-update/OTA platform) before 12.128.2 lets unauthenticated callers abuse
Unauthenticated information disclosure in Capgo before 12.128.2 lets remote attackers read organization RBAC role bindin
Cross-tenant authorization bypass in Capgo before 12.128.2 lets authenticated users impersonate another tenant's limited
Same weakness CWE-918 – Server-Side Request Forgery (SSRF)
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External POC / Exploit Code
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