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CVE

CVE-2026-56237

Capgo - Unauthenticated API Key Generation via Client-Side Parameter Manipulation
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CVE

CVE-2026-56237

Capgo - Unauthenticated API Key Generation via Client-Side Parameter Manipulation

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
4.0
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
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56237.json, https://github.com/Cap-go/capgo/security/advisories/GHSA-22w2-mx2h-4fr7, https://nvd.nist.gov/vuln/detail/CVE-2026-56237, https://www.vulncheck.com/advisories/capgo-unauthenticated-api-key-generation-via-client-side-parameter-manipulation

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00293%
EPSS Percentile
0.21972%
Introduced Version
0
Fix Available
6685e5f11adef257bf3d085e481f4d8ebcec602e

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