Improper Verification of Cryptographic Signature Affecting mkj/dropbear package, versions [,2026.90)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-MKJDROPBEAR-15440511
- published10 Mar 2026
- disclosed8 Mar 2026
- creditUnknown
Introduced: 8 Mar 2026
CVE-2026-3706 (opens in a new tab)How to fix?
Upgrade mkj/dropbear to version 2026.90 or higher.
Overview
Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the unpackneg function of the curve25519.c component during signature verification. An attacker can cause improper acceptance of invalid cryptographic signatures.