207 matches found
pyOpenSSL: DTLS cookie callback buffer overflow
A flaw was found in pyOpenSSL. The setcookiegeneratecallback callback function can be used to generate DTLS cookies. When the callback returns a cookie string or byte sequence longer than 256 bytes, a buffer overflow can be triggered due to a missing bounds checking before copying the data to a...
CLSA-2026-1777567181 openssl: Fix of CVE-2026-28390
CVE-2026-28390: fix NULL pointer dereference in rsacmsdecrypt when CMS RSA-OAEP pSourceFunc is missing its parameter...
RHSA-2026:10754 Red Hat Security Advisory: RHUI 4.11.4 security update - python-pyOpenSSL
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JLSEC-2026-247 Null pointer dereference in PKCS12 parsing
Issue summary: Processing a maliciously formatted PKCS12 file may lead OpenSSL to crash leading to a potential Denial of Service attack Impact summary: Applications loading files in the PKCS12 format from untrusted sources might terminate abruptly. A file in PKCS12 format can contain certificates...
PT-2026-47844
Name of the Vulnerable Software and Affected Versions OpenSSL version 4.0 OpenSSL version 3.6 OpenSSL version 3.5 OpenSSL version 3.4 OpenSSL version 3.0 OpenSSL version 1.1.1 OpenSSL version 1.0.2 Description A use-after-free condition occurs during PKCS7 signature verification when processing a...
UBUNTU-CVE-2026-41681
rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.39 to before 0.10.78, EVPDigestFinal always writes EVPMDCTXsizectx to the out buffer. If out is smaller than that, MdCtxRef::digestfinal writes past its end, usually corrupting the stack. This is reachable from sa...
UBUNTU-CVE-2026-41676
rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.27 to before 0.10.78, Deriver::derive and PkeyCtxRef::derive sets len = buf.len and passes it as the in/out length to EVPPKEYderive, relying on OpenSSL to honor it. On OpenSSL 1.1.x, X25519, X448, DH and HKDF-extra...
GHSA-GHM9-CR32-G9QJ rust-openssl: rustMdCtxRef::digest_final() writes past caller buffer with no length check
EVPDigestFinal always writes EVPMDCTXsizectx to the out buffer. If out is smaller than that, MdCtxRef::digestfinal writes past its end, usually corrupting the stack. This is reachable from safe Rust...
PT-2026-29186
Name of the Vulnerable Software and Affected Versions vcpkg versions prior to 3.6.13 Description vcpkg, a C/C++ package manager, exhibited a configuration issue in its Windows builds of OpenSSL. Specifically, the openssldir setting was configured to a path on the build machine. This configuration...
CVE-2026-27448
pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 0.14.0 and prior to version 26.0.0, if a user provided callback to settlsextservernamecallback raised an unhandled exception, this would result in a connection being accepted. If a user was relying on this callback for...
CVE-2026-27459
pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 22.0.0 and prior to version 26.0.0, if a user provided callback to setcookiegeneratecallback returned a cookie value greater than 256 bytes, pyOpenSSL would overflow an OpenSSL provided buffer. Starting in version 26.0....
OESA-2026-1558 libssh security update
The ssh library was designed to be used by programmers needing a working SSH implementation by the mean of a library. The complete control of the client is made by the programmer. With libssh, you can remotely execute programs, transfer files, use a secure and transparent tunnel for your remote...
Nutanix AHV : Multiple Vulnerabilities (NXSA-AHV-11.0.0.2)
The version of AHV installed on the remote host is prior to 11.0.0.2. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AHV-11.0.0.2 advisory. - A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the...
RHSA-2026:1472 Red Hat Security Advisory: openssl security update
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Missing Cryptographic Step
Overview Affected versions of this package are vulnerable to Missing Cryptographic Step that exposes the final 1-15 bytes of a message when the low-level OCB API is used directly with AES-NI or other hardware accelerated code paths. Common implementations of openssl using EVP are not vulnerable...
OpenSSL security vulnerabilities
OpenSSL is an open-source encryption library developed by the OpenSSL team that enables secure implementation of Secure Sockets Layer SSLv2/v3 and Secure Transport Layer TLSv1 protocols. This product supports various encryption algorithms, including symmetric ciphers, hash algorithms, and secure...
RHSA-2026:0794 Red Hat Security Advisory: openssl and openssl-fips-provider security update
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Astra Linux – Vulnerability in libssh
A flaw was discovered in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected, and libssh may use a partially initialized cipher context. This occurs because the OpenSSL error code returns aliases with the SSH...