Insufficient Verification of Data Authenticity Affecting cryptography package, versions [,46.0.5)
Threat Intelligence
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-PYTHON-CRYPTOGRAPHY-15263096
- published11 Feb 2026
- disclosed10 Feb 2026
- creditXlabAI Team, A7um
Introduced: 10 Feb 2026
CVE-2026-26007 (opens in a new tab)How to fix?
Upgrade cryptography to version 46.0.5 or higher.
Overview
Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity in public key functions public_key_from_numbers, EllipticCurvePublicNumbers.public_key, load_der_public_key, and load_pem_public_key, which may reveal bits from a private key when provided with a malicious public key as input. When the application is using sect* binary curves for verification - which is a rare use case - these functions do not verify that the provided point belongs to the expected prime-order subgroup of the curve. An attacker can thus expose partial private keys or forge signatures.