What’s Vulnerable › Vulnerabilities

CVE-2021-32685: Improper Verification of Cryptographic Signature in tenvoy

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-16 · updated 2026-06-17
• Weakness: CWE-347

Description

tEnvoy contains the PGP, NaCl, and PBKDF2 in node.js and the browser (hashing, random, encryption, decryption, signatures, conversions), used by TogaTech.org. In versions prior to 7.0.3, the `verifyWithMessage` method of `tEnvoyNaClSigningKey` always returns `true` for any signature that has a SHA-512 hash matching the SHA-512 hash of the message even if the signature was invalid. This issue is patched in version 7.0.3. As a workaround: In `tenvoy.js` under the `verifyWithMessage` method definition within the `tEnvoyNaClSigningKey` class, ensure that the return statement call to `this.verify` ends in `.verified`.

Affected products

• TogaTech tEnvoy: before 7.0.3 — fixed in 7.0.3

How to fix

Upgrade to a fixed version: TogaTech tEnvoy 7.0.3. Check the vendor advisory for mitigations.

References

• https://github.com/TogaTech/tEnvoy/commit/a121b34a45e289d775c62e58841522891dee686b
• https://github.com/TogaTech/tEnvoy/releases/tag/v7.0.3
• https://github.com/TogaTech/tEnvoy/security/advisories/GHSA-7r96-8g3x-g36m
• https://github.com/TogaTech/tEnvoy/commit/a121b34a45e289d775c62e58841522891dee686b
• https://github.com/TogaTech/tEnvoy/releases/tag/v7.0.3
• https://github.com/TogaTech/tEnvoy/security/advisories/GHSA-7r96-8g3x-g36m

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