VulnerableCode Package Details - pkg:deb/debian/python-cryptography@43.0.0-3%2Bdeb13u1

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Vulnerability	Summary	Fixed by
VCID-jksg-v3x3-z3d3 Aliases: CVE-2026-34073 GHSA-m959-cc7f-wv43 PYSEC-2026-35	cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to version 46.0.6, DNS name constraints were only validated against SANs within child certificates, and not the "peer name" presented during each validation. Consequently, cryptography would allow a peer named bar.example.com to validate against a wildcard leaf certificate for *.example.com, even if the leaf's parent certificate (or upwards) contained an excluded subtree constraint for bar.example.com. This issue has been patched in version 46.0.6.	46.0.7-1 Affected by 0 other vulnerabilities.

Vulnerability

Summary

Fixed by

VCID-jksg-v3x3-z3d3
Aliases:
CVE-2026-34073
GHSA-m959-cc7f-wv43
PYSEC-2026-35

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to version 46.0.6, DNS name constraints were only validated against SANs within child certificates, and not the "peer name" presented during each validation. Consequently, cryptography would allow a peer named bar.example.com to validate against a wildcard leaf certificate for *.example.com, even if the leaf's parent certificate (or upwards) contained an excluded subtree constraint for bar.example.com. This issue has been patched in version 46.0.6.

46.0.7-1
Affected by 0 other vulnerabilities.

Vulnerability	Summary	Aliases
VCID-ac2f-9mbb-pyeh	cryptography Vulnerable to a Subgroup Attack Due to Missing Subgroup Validation for SECT Curves The `public_key_from_numbers` (or `EllipticCurvePublicNumbers.public_key()`), `EllipticCurvePublicNumbers.public_key()`, `load_der_public_key()` and `load_pem_public_key()` functions do not verify that the point belongs to the expected prime-order subgroup of the curve. This missing validation allows an attacker to provide a public key point `P` from a small-order subgroup. This can lead to security issues in various situations, such as the most commonly used signature verification (ECDSA) and shared key negotiation (ECDH). When the victim computes the shared secret as `S = [victim_private_key]P` via ECDH, this leaks information about `victim_private_key mod (small_subgroup_order)`. For curves with cofactor > 1, this reveals the least significant bits of the private key. When these weak public keys are used in ECDSA , it's easy to forge signatures on the small subgroup. Only SECT curves are impacted by this.	CVE-2026-26007 GHSA-r6ph-v2qm-q3c2
VCID-gyar-9xau-nba1	Python Cryptography package vulnerable to Bleichenbacher timing oracle attack A flaw was found in the python-cryptography package. This issue may allow a remote attacker to decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data.	CVE-2023-50782 GHSA-3ww4-gg4f-jr7f

Vulnerability

Summary

Aliases

VCID-ac2f-9mbb-pyeh

cryptography Vulnerable to a Subgroup Attack Due to Missing Subgroup Validation for SECT Curves The `public_key_from_numbers` (or `EllipticCurvePublicNumbers.public_key()`), `EllipticCurvePublicNumbers.public_key()`, `load_der_public_key()` and `load_pem_public_key()` functions do not verify that the point belongs to the expected prime-order subgroup of the curve. This missing validation allows an attacker to provide a public key point `P` from a small-order subgroup. This can lead to security issues in various situations, such as the most commonly used signature verification (ECDSA) and shared key negotiation (ECDH). When the victim computes the shared secret as `S = [victim_private_key]P` via ECDH, this leaks information about `victim_private_key mod (small_subgroup_order)`. For curves with cofactor > 1, this reveals the least significant bits of the private key. When these weak public keys are used in ECDSA , it's easy to forge signatures on the small subgroup. Only SECT curves are impacted by this.

CVE-2026-26007
GHSA-r6ph-v2qm-q3c2

VCID-gyar-9xau-nba1

Python Cryptography package vulnerable to Bleichenbacher timing oracle attack A flaw was found in the python-cryptography package. This issue may allow a remote attacker to decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data.

CVE-2023-50782
GHSA-3ww4-gg4f-jr7f

Date	Actor	Action	Vulnerability	Source	VulnerableCode Version
2026-06-05T20:26:17.361115+00:00	Debian Importer	Fixing	VCID-gyar-9xau-nba1	https://security-tracker.debian.org/tracker/data/json	38.6.0
2026-06-04T19:53:03.217656+00:00	Debian Importer	Fixing	VCID-ac2f-9mbb-pyeh	https://security-tracker.debian.org/tracker/data/json	38.6.0
2026-06-04T19:52:47.981558+00:00	Debian Importer	Affected by	VCID-jksg-v3x3-z3d3	https://security-tracker.debian.org/tracker/data/json	38.6.0