What’s Vulnerable › Vulnerabilities

CVE-2026-104891: mppx-condition-gate: Free-access path grants on a self-declared wallet without proving control

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-05 · updated 2026-10-06
• Weakness: CWE-290

Description

mppx-condition-gate provides conditional free-access wrappers for mppx payment methods. Prior to @insumermodel/mppx-condition-gate 3.0.0 and @insumermodel/mppx-token-gate 1.0.4, the packages read a wallet address from the client-supplied credential.source, checked whether that public address met configured on-chain conditions, and returned a successful free-access receipt without invoking the wrapped payment verifier or proving that the caller controlled the wallet. An unauthenticated attacker could name any qualifying wallet and obtain content that should require payment, and cached grants could be reused for the configured cache lifetime. The corrected packages prevent free-access authorization unless payer control has been established. These issues are fixed in @insumermodel/mppx-condition-gate 3.0.0 and @insumermodel/mppx-token-gate 1.0.4.

Affected products

• douglasborthwick-crypto mppx-condition-gate: before b1d9935a57ba6d32da49eead1bfb459ad0cd55ab
• @insumermodel mppx-condition-gate: before 3.0.0
• @insumermodel mppx-token-gate: before 1.0.4

References

• https://github.com/insumerapi/mppx-condition-gate/commit/b1d9935a57ba6d32da49eead1bfb459ad0cd55ab
• https://github.com/insumerapi/mppx-condition-gate/commit/ec43a2fcd443a0fa102b6d4203abed2b785bd954
• https://github.com/insumerapi/mppx-condition-gate/security/advisories/GHSA-jg6q-3qfh-r9f8

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