CVE-2026-33936

CVE-2026-33936 affects the Python package python-ecdsa (pre-0.19.2). A flaw in the low-level DER parsing (remove_octet_string) can cause generated truncated DER inputs to be accepted, allowing SigningKey.from_der() to raise an internal IndexError instead of rejecting malformed data, potentially c...

CVE-2026-33936

The ecdsa PyPI package is a pure Python implementation of ECC Elliptic Curve Cryptography with support for ECDSA Elliptic Curve Digital Signature Algorithm, EdDSA Edwards-curve Digital Signature Algorithm and ECDH Elliptic Curve Diffie-Hellman. Prior to version 0.19.2, an issue in the low-level D...

CVE-2026-33936

The ecdsa PyPI package is a pure Python implementation of ECC Elliptic Curve Cryptography with support for ECDSA Elliptic Curve Digital Signature Algorithm, EdDSA Edwards-curve Digital Signature Algorithm and ECDH Elliptic Curve Diffie-Hellman. Prior to version 0.19.2, an issue in the low-level D...

CVE-2026-33936 python-ecdsa: Denial of Service via improper DER length validation in crafted private keys

The ecdsa PyPI package is a pure Python implementation of ECC Elliptic Curve Cryptography with support for ECDSA Elliptic Curve Digital Signature Algorithm, EdDSA Edwards-curve Digital Signature Algorithm and ECDH Elliptic Curve Diffie-Hellman. Prior to version 0.19.2, an issue in the low-level D...

CVE-2026-33936 python-ecdsa: Denial of Service via improper DER length validation in crafted private keys

The ecdsa PyPI package is a pure Python implementation of ECC Elliptic Curve Cryptography with support for ECDSA Elliptic Curve Digital Signature Algorithm, EdDSA Edwards-curve Digital Signature Algorithm and ECDH Elliptic Curve Diffie-Hellman. Prior to version 0.19.2, an issue in the low-level D...

acapy-plugin-pickup (>=0.1.0.post1 <=0.2.0), acapy-wallet-groups-plugin (>=0.5.1 <=0.7.0) +368 more potentially affected by CVE-2026-33936 via ecdsa (>=0.13.0 <=0.19.1)

ecdsa PYPI version =0.13.0, =0.1.0.post1, =0.5.1, =0.1.7, =1.0.0, =1.0.0, =1.0.0, =1.0.0, =0.1.1, =1.0.0, =0.4.2, =0.1.2, =0.0.3, =0.2.0, =0.4.0 and more Source cves: CVE-2026-33936 Source advisory: SNYK:PYTHON-ECDSA-15792390...

Improper Handling of Length Parameter Inconsistency

Overview ecdsa is an easy-to-use implementation of ECDSA cryptography Elliptic Curve Digital Signature Algorithm, implemented purely in Python, released under the MIT license. Affected versions of this package are vulnerable to Improper Handling of Length Parameter Inconsistency due to improper...

python-ecdsa: Denial of Service via improper DER length validation in crafted private keys

Summary An issue in the low-level DER parsing functions can cause unexpected exceptions to be raised from the public API functions. 1. ecdsa.der.removeoctetstring accepts truncated DER where the encoded length exceeds the available buffer. For example, an OCTET STRING that declares a length of 40...

GHSA-9F5J-8JWJ-X28G python-ecdsa: Denial of Service via improper DER length validation in crafted private keys

Summary An issue in the low-level DER parsing functions can cause unexpected exceptions to be raised from the public API functions. 1. ecdsa.der.removeoctetstring accepts truncated DER where the encoded length exceeds the available buffer. For example, an OCTET STRING that declares a length of 40...

PT-2026-28568

Name of the Vulnerable Software and Affected Versions ecdsa versions prior to 0.19.2 Description The ecdsa package, a Python implementation of ECC, contains a flaw in its DER parsing functions. Specifically, ecdsa.der.remove octet string incorrectly accepts truncated DER data where the declared...

Linux Distros Unpatched Vulnerability : CVE-2026-1229

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The CombinedMult function in the CIRCL ecc/p384 package secp384r1 curve produces an incorrect value for specific inputs. The issue is fixed by using complete...

SUSE CVE-2026-26007

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 46.0.5, the publickeyfromnumbers or EllipticCurvePublicNumbers.publickey, EllipticCurvePublicNumbers.publickey, loadderpublickey and loadpempublickey functions do not verify that the...

AZL-77447 CVE-2026-26007 affecting package python-cryptography 3.3.2-7

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 46.0.5, the publickeyfromnumbers or EllipticCurvePublicNumbers.publickey, EllipticCurvePublicNumbers.publickey, loadderpublickey and loadpempublickey functions do not verify that the...

AZL-77454 CVE-2026-26007 affecting package python-cryptography for versions less than 42.0.5-4

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 46.0.5, the publickeyfromnumbers or EllipticCurvePublicNumbers.publickey, EllipticCurvePublicNumbers.publickey, loadderpublickey and loadpempublickey functions do not verify that the...

CVE-2026-26007

CVE-2026-26007 describes a vulnerability in the cryptography package where public_key_from_numbers, EllipticCurvePublicNumbers.public_key(), load_der_public_key(), and load_pem_public_key() do not validate that a key point belongs to the expected prime-order subgroup. This allows small-subgroup k...

CVE-2026-26007 cryptography Subgroup Attack Due to Missing Subgroup Validation for SECT Curves

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 46.0.5, the publickeyfromnumbers or EllipticCurvePublicNumbers.publickey, EllipticCurvePublicNumbers.publickey, loadderpublickey and loadpempublickey functions do not verify that the...

Linux Distros Unpatched Vulnerability : CVE-2026-26007

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 46.0.5, the publickeyfromnumbers or...

CVE-2026-25793

Nebula is a scalable overlay networking tool. In versions from 1.7.0 to 1.10.2, when using P256 certificates which is not the default configuration, it is possible to evade a blocklist entry created against the fingerprint of a certificate by using ECDSA Signature Malleability to use a copy of th...

CVE-2026-25793 Nebula Has Possible Blocklist Bypass via ECDSA Signature Malleability

Nebula is a scalable overlay networking tool. In versions from 1.7.0 to 1.10.2, when using P256 certificates which is not the default configuration, it is possible to evade a blocklist entry created against the fingerprint of a certificate by using ECDSA Signature Malleability to use a copy of th...

GHSA-69X3-G4R3-P962 Blocklist Bypass possible via ECDSA Signature Malleability

Impact When using P256 certificates which is not the default configuration, it is possible to evade a blocklist entry created against the fingerprint of a certificate by using ECDSA Signature Malleability to use a copy of the certificate with a different fingerprint. In order for this to affect a...