What’s Vulnerable › Vulnerabilities

CVE-2026-56322: Capgo - Information Disclosure via Unauthenticated /updates defaultChannel Parameter

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-23 · updated 2026-06-23
• Weakness: CWE-200

Description

Capgo before 12.128.2 contains an information disclosure vulnerability in the unauthenticated /updates endpoint that resolves the defaultChannel parameter before enforcing privacy restrictions, allowing attackers to enumerate private channels and leak version/config state. Unauthenticated attackers can probe private channel names and distinguish valid channels from nonexistent ones based on response differences, revealing assigned bundle versions and platform-specific configuration details.

Affected products

• Capgo: before 12.128.2 — fixed in 12.128.2

How to fix

Upgrade to a fixed version: Capgo 12.128.2. Check the vendor advisory for mitigations.

References

• https://github.com/Cap-go/capgo/security/advisories/GHSA-pgmr-gw53-7f77
• https://www.vulncheck.com/advisories/capgo-information-disclosure-via-unauthenticated-updates-defaultchannel-parameter
• https://github.com/Cap-go/capgo/security/advisories/GHSA-pgmr-gw53-7f77

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