What’s Vulnerable › Vulnerabilities

CVE-2026-56240: Capgo - Billing Authorization Bypass via Exhausted Usage Credits

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-11 · updated 2026-10-25
• Weakness: CWE-285

Description

Capgo before 12.128.12 contains a billing authorization bypass vulnerability in the plan_valid calculation that allows organizations with exhausted or expired usage credit grants to bypass billing gates. Attackers can exploit the divergence between the plugin hot-path plan_valid expression and the authoritative billing gate to gain continued access to /updates, /stats, /channel_self, and attachment upload endpoints after credit depletion.

Affected products

• Capgo: before 12.128.12 — fixed in 12.128.12

How to fix

Upgrade to a fixed version: Capgo 12.128.12. Check the vendor advisory for mitigations.

References

• https://github.com/Cap-go/capgo/security/advisories/GHSA-g9fc-82c2-p2r6
• https://www.vulncheck.com/advisories/capgo-billing-authorization-bypass-via-exhausted-usage-credits
• https://github.com/Cap-go/capgo/security/advisories/GHSA-g9fc-82c2-p2r6

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