CVE-2026-56237
Last modified
CVE-2026-56237 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. Capgo before 12.128.2 contains a broken authentication vulnerability in its API key generation mechanism. API keys are exposed in frontend requests, and the backend fails to validate that keys are securely generated and bound to the authenticated user. EPSS estimates a 0.29% chance of exploitation in the next 30 days.
Description
Capgo before 12.128.2 contains a broken authentication vulnerability in its API key generation mechanism. API keys are exposed in frontend requests, and the backend fails to validate that keys are securely generated and bound to the authenticated user. An attacker can tamper with the API key parameter in the generation request and supply arbitrary values, generating custom API keys without proper authorization, which can lead to unauthorized access to protected endpoints.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/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
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-56237?
How severe is CVE-2026-56237?
How do I fix CVE-2026-56237?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-56231Capgo before 12.128.2 contains a broken object level authori…7.6
- CVE-2026-56232Capgo before 12.128.2 fails to enforce limited_to_orgs and l…8.8
- CVE-2026-56233Capgo before 12.128.2 contains a path traversal vulnerabilit…8.7
- CVE-2026-56234Capgo before 12.128.2 contains a credential validation vulne…6.9
- CVE-2026-56235Cap-go capgo before 12.128.2 contains an authorization bypas…6.9
- CVE-2026-56236Capgo CLI before 12.128.2 contains arbitrary file overwrite …6.8
- CVE-2026-56238Capgo before 12.128.2 contains an information disclosure vul…8.7
- CVE-2026-56239Capgo before 12.128.2 contains a potential privilege escalat…7.6
- CVE-2026-5624A security flaw has been discovered in ProjectSend r2002. Th…4.3
- CVE-2026-56240Capgo before 12.128.12 contains a billing authorization bypa…5.3
- CVE-2026-56241Capgo before 12.128.2 contains a privilege escalation vulner…8.3
- CVE-2026-56242Capgo before 12.128.2 contains an unauthenticated security d…8.7
Are you affected by CVE-2026-56237?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
