SUSE CVE-2026-45447

Issue summary: A specially crafted PKCS7 or S/MIME signed message could trigger a use-after-free during PKCS7 signature verification. Impact summary: A use-after-free may result in process crashes, heap corruption, or potentially remote code execution. When processing a PKCS7 or S/MIME signed...

openssl: Heap Use-After-Free in OpenSSL PKCS7_verify()

A flaw was found in OpenSSL. When processing a specially crafted PKCS7 or S/MIME Secure/Multipurpose Internet Mail Extensions signed message, a heap use-after-free vulnerability in the PKCS7verify function can be triggered. This occurs if the SignedData digestAlgorithms field is present as an emp...

openssl: Heap Use-After-Free in OpenSSL PKCS7_verify()

A flaw was found in OpenSSL. When processing a specially crafted PKCS7 or S/MIME Secure/Multipurpose Internet Mail Extensions signed message, a heap use-after-free vulnerability in the PKCS7verify function can be triggered. This occurs if the SignedData digestAlgorithms field is present as an emp...

Use After Free

Overview Affected versions of this package are vulnerable to Use After Free in PKCS7verify. An attacker supplying a PKCS7 or S/MIME signed message whose SignedData digestAlgorithms field is an empty ASN.1 SET can cause a caller-owned BIO to be freed during verification. A subsequent use of that B...

ALPINE-CVE-2026-45447

Issue summary: A specially crafted PKCS7 or S/MIME signed message could trigger a use-after-free during PKCS7 signature verification. Impact summary: A use-after-free may result in process crashes, heap corruption, or potentially remote code execution. When processing a PKCS7 or S/MIME signed...

ALPINE-CVE-2026-42768

Issue summary: The CMSdecrypt and PKCS7decrypt functions are vulnerable to Bleichenbacher-style attack when an attacker is able to provide the CMS or S/MIME messages and observe the error code and/or decryption output. Impact summary: The Bleichenbacher-style attack allows an attacker to use the...

CVE-2026-42768

Issue summary: The CMSdecrypt and PKCS7decrypt functions are vulnerable to Bleichenbacher-style attack when an attacker is able to provide the CMS or S/MIME messages and observe the error code and/or decryption output. Impact summary: The Bleichenbacher-style attack allows an attacker to use the...

OpenSSL Security Advisory 20260609

OpenSSL is susceptible to multiple security vulnerabilities. A specially crafted PKCS7 or S/MIME signed message could trigger a use-after-free during PKCS7 signature verification. The Cryptographic Message Services CMS processing fails to perform sufficient input validation on the cipher and tag...

CVE-2026-5419 Guntls: gnutls: information disclosure via timing side-channel in pkcs#7 padding removal

A flaw was found in gnutls. The PKCS7 padding check, performed during decryption, was not constant-time. This timing side-channel could allow a remote attacker to potentially leak sensitive information about the padding bytes through observable timing differences. This vulnerability is a form of...

CVE-2026-5419

The CVE-2026-5419 issue affects the GnuTLS library: PKCS#7 padding removal during decryption may leak padding information via timing differences due to non-constant-time checks. This is an information-disclosure risk. Reports and patches across multiple distros exist: SUSE-2026-2115; Ubuntu USN-8...

JLSEC-2026-523

A vulnerability found in gnutls. This security flaw happens because of a double free error occurs during verification of pkcs7 signatures in gnutlspkcs7verify function...

Astra Linux - уязвимость в gnutls28

A vulnerability has been discovered in gnutls. This security flaw occurs due to a double-free error that occurs during the verification of pkcs7 signatures in the gnutlspkcs7verify function...

Astra Linux - уязвимость в openssl

The public API function BIOnewNDEF is a helper function used for streaming ASN.1 data via a BIO. It is primarily used internally by OpenSSL to support SMIME, CMS, and PKCS7 streaming capabilities. However, it can also be called directly by end-user applications. This function receives a BIO from...

Astra Linux - уязвимость в openssl

Issue Summary: There is a type confusion vulnerability in the signature verification of signed PKCS7 data. In this vulnerability, an ASN1TYPE union member is accessed without first validating the type, resulting in an invalid or NULL pointer dereferencing during the processing of malformed PKCS7...

GHSA-6X44-W3XG-HQQF Coder: PKCS#7 signature bypass in Azure instance identity allows unauthenticated agent token theft

Summary azureidentity.Validate verifies that the PKCS7 signer certificate chains to a trusted Azure CA but never verifies the PKCS7 signature itself. An attacker can embed a legitimate Azure certificate alongside arbitrary content e.g. "vmId":"" and the forged vmId will be accepted returning the...

GHSA-686C-7VGV-V3FX Coder: Unauthenticated SSRF via Azure Instance Identity Endpoint

Summary Unauthenticated semi-blind Server-Side Request Forgery SSRF via the Azure instance identity endpoint POST /api/v2/workspaceagents/azure-instance-identity. An external attacker can force the Coder server to issue HTTP GET requests to arbitrary internal or external hosts by submitting a...

PT-2026-42031

Summary Unauthenticated semi-blind Server-Side Request Forgery SSRF via the Azure instance identity endpoint POST /api/v2/workspaceagents/azure-instance-identity. An external attacker can force the Coder server to issue HTTP GET requests to arbitrary internal or external hosts by submitting a...

CVE-2026-44310 gitsign --verify panics on empty-certificate PKCS7 and exits 0, bypassing exit-code callers

Gitsign is a keyless Sigstore to signing tool for Git commits with your a GitHub / OIDC identity. From 0.4.0 to before 0.15.0, CertVerifier.Verify in pkg/git/verifier.go unconditionally dereferences certs0 after sd.GetCertificates without checking the slice length. A CMS/PKCS7 signed message with...

Security Bulletin: This Power System update is being released to address CVE-2026-22796

Summary This impacts the BMC administrator function to upload a certificate or firmware image. Uploading a malicious digitally-signed file may cause the BMC the become unavailable. Vulnerability Details CVEID:CVE-2026-22796 DESCRIPTION: Issue summary: A type confusion vulnerability exists in the...

Security Bulletin: This Power System update is being released to address CVE-2026-22796

Summary This impacts the FSP administrator function to upload a certificate or firmware image. Uploading a malicious digitally-signed file may cause the FSP the become unavailable. Vulnerability Details CVEID:CVE-2026-22796 DESCRIPTION: Issue summary: A type confusion vulnerability exists in the...