CVE-2026-35189 Excessive Memory Allocation in Relative CRLDP Processing

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of...

CVE-2026-35189

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of...

CVE-2026-97687

The urllib3 Python HTTP client library (versions 1.26.0 through 2.8.0 ) contains a vulnerability where target-server TLS settings are incorrectly applied to HTTPS proxy connections. Specifically, configurations like proxy_ssl_context, ssl_context, and cert_reqs fail to remain separated, allowing ...

CVE-2026-97687

urllib3 is an HTTP client library for Python. From 1.26.0 until 2.8.0, the proxysslcontext, proxyasserthostname, proxyassertfingerprint, sslcontext, certreqs, verifymode, useforwardingforhttps=True, and CERTNONE configuration paths fail to remain separated because target-server TLS settings are...

CVE-2026-97687 urllib3: HTTPS proxy TLS configuration may be ignored or overridden

urllib3 is an HTTP client library for Python. From 1.26.0 until 2.8.0, the proxysslcontext, proxyasserthostname, proxyassertfingerprint, sslcontext, certreqs, verifymode, useforwardingforhttps=True, and CERTNONE configuration paths fail to remain separated because target-server TLS settings are...

CVE-2026-97687 urllib3: HTTPS proxy TLS configuration may be ignored or overridden

urllib3 is an HTTP client library for Python. From 1.26.0 until 2.8.0, the proxysslcontext, proxyasserthostname, proxyassertfingerprint, sslcontext, certreqs, verifymode, useforwardingforhttps=True, and CERTNONE configuration paths fail to remain separated because target-server TLS settings are...

CVE-2026-97687 urllib3: HTTPS proxy TLS configuration may be ignored or overridden

urllib3 is an HTTP client library for Python. From 1.26.0 until 2.8.0, the proxysslcontext, proxyasserthostname, proxyassertfingerprint, sslcontext, certreqs, verifymode, useforwardingforhttps=True, and CERTNONE configuration paths fail to remain separated because target-server TLS settings are...

Security Bulletin: IBM Documentation Offline may be vulnerable to TLS authentication bypass and authority rebinding due to Node.js (CVE-2026-48618, CVE-2026-48930)

Summary IBM Documentation Offline uses Node.js as its runtime environment. Node.js is affected by two vulnerabilities related to TLS hostname handling. CVE-2026-48618 involves improper handling of Unicode dot separators during TLS certificate verification, which could allow an attacker performing...

Improper Certificate Validation

Netty is vulnerable to Improper Certificate Validation. The vulnerability is due to disabled TLS hostname verification in the SslProvider.OPENSSL client path under specific configurations, which allows a man-in-the-middle attacker to present a certificate issued for a different hostname and...

crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages

A flaw was found in the crypto/tls package, part of golang. A malicious client can exploit this vulnerability by continuously sending KeyUpdate messages to a server. This forces the server to perform indefinite key derivation operations, leading to resource exhaustion and a Denial of Service DoS...

crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages

A flaw was found in the crypto/tls package, part of golang. A malicious client can exploit this vulnerability by continuously sending KeyUpdate messages to a server. This forces the server to perform indefinite key derivation operations, leading to resource exhaustion and a Denial of Service DoS...

crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages

A flaw was found in the crypto/tls package, part of golang. A malicious client can exploit this vulnerability by continuously sending KeyUpdate messages to a server. This forces the server to perform indefinite key derivation operations, leading to resource exhaustion and a Denial of Service DoS...

Security update for netty, netty-tcnative

This update for netty, netty-tcnative fixes the following issues: CVE-2026-59902: Netty: Memory Exhaustion in SctpMessageCompletionHandler bsc1275501. CVE-2026-59903: Netty Vulnerable to Cache Poisoning and Information Disclosure via CORS Vary Header Overwrite bsc1275500. CVE-2026-62243: TLS...

PT-2026-102666

Name of the Vulnerable Software and Affected Versions urllib3 versions 1.26.0 through 2.7.x Description Target-server TLS settings are incorrectly applied to the HTTPS proxy connection, causing configuration paths to fail to remain separated. This occurs when an application uses an HTTPS proxy an...

CVE-2026-35189: Allocation of Resources Without Limits or Throttling

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of...

PT-2026-102647

Name of the Vulnerable Software and Affected Versions OpenSSL affected versions not specified Description Processing a certificate containing numerous nameRelativeToCRLIssuer CRL distribution points can cause disproportionate heap growth when X.509 extensions are cached. A malicious peer can send...

Out-of-Bounds Access After SSL_set_SSL_CTX() During a Handshake

Issue summary: A TLS server that calls SSLsetSSLCTX to switch a connection to a different SSLCTX part way through a handshake may access memory beyond the end of an internal array if the replacement context knows about more provider signature algorithms than the context the connection was created...

CVE-2026-102759: Improper Validation of Integrity Check Value

NetX Secure TLS accepts an empty application-data record without verifying its message authentication code. In nxsecureverifymac, a decrypted application record whose length equals the negotiated MAC size is treated as valid and returns success after advancing the receive sequence number. The...

CVE-2026-102758: Buffer Over-read

The nxsecurex509asn1tlvblockparse function parses ASN.1 TLV tag-length-value blocks out of DER-encoded data. It is the primitive underneath all X.509 certificate parsing in NetX Secure, and therefore runs on certificates supplied by a remote peer during the TLS handshake. The function reads the...

CVE-2026-72897: Out-of-bounds Write

Issue summary: A TLS server that calls SSLsetSSLCTX to switch a connection to a different SSLCTX part way through a handshake may access memory beyond the end of an internal array if the replacement context knows about more provider signature algorithms than the context the connection was created...