aiohttp: TLS Server Hostname Override Is Ignored When Reusing HTTPS Connections

Summary The serverhostname TLS SNI check can be bypassed when an existing connection is reused. Impact If an application makes multiple requests to the same domain, but with different per-request serverhostname parameters, then the later calls may succeed by reusing the existing connection when...

GHSA-4M7W-QMGQ-4WJ5 aiohttp: TLS Server Hostname Override Is Ignored When Reusing HTTPS Connections

Summary The serverhostname TLS SNI check can be bypassed when an existing connection is reused. Impact If an application makes multiple requests to the same domain, but with different per-request serverhostname parameters, then the later calls may succeed by reusing the existing connection when...

CVE-2026-9669

A flaw was found in Python's bz2.BZ2Decompressor component. An attacker could provide specially crafted input that, when processed by an application reusing a decompressor object after an error, could lead to out-of-bounds writes in memory. This memory corruption could cause the application to...

JS-YAML: Quadratic-complexity DoS in merge key handling via repeated aliases

Summary A crafted YAML document can trigger algorithmic CPU exhaustion in js-yaml merge-key processing by repeating the same alias many times in a merge sequence. This causes quadratic parse-time behavior relative to input size and can block a Node.js worker/event loop for seconds with a relative...

CVE-2026-50627

A flaw was found in Apache CXF. The JwtAccessTokenValidator class fails to properly validate the 'aud' Audience claims within incoming JSON Web Token JWT access tokens. This vulnerability allows an attacker to reuse a JWT, originally intended for one resource server, against a different resource...

The Onboarding Password Mistake That Creates Unnecessary Risk

Employee onboarding is a busy time for IT teams. New starters need devices, accounts, access permissions, and passwords, all delivered within a tight timeframe. That usually means sharing a temporary "first-day" password so employees can access systems for the first time. The issue is that these...

PT-2026-63985

Name of the Vulnerable Software and Affected Versions DOMPurify versions 3.0.0 through 3.4.8 Description The software fails to reset the retained Trusted Types policy when the clearConfig function is called. Consequently, a DOMPurify instance reused across trust boundaries remains bound to a...

PT-2026-49531

Name of the Vulnerable Software and Affected Versions Crypt::DSA versions prior to 1.21 Description The software reuses the nonce across signatures, which can lead to the recovery of the private key. The sign function in the Crypt::DSA::sign module caches the per-signature nonce material within t...

CVE-2026-12205

Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to private-key recovery. Crypt::DSA::sign caches the per-signature nonce material in the Key object without ever clearing it. The first sign on a Key object picks a nonce, and every later sign on that same object...

Linux Distros Unpatched Vulnerability : CVE-2026-12205

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to private-key recovery. Crypt::DSA::sign caches the per-signature nonce...

Fedora 45 : perl-Crypt-DSA (2026-cf622b92d7)

The remote Fedora 45 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-cf622b92d7 advisory. Automatic update for perl-Crypt-DSA-1.21-1.fc45. Changelog Mon Jun 15 2026 Paul Howarth - 1.21-1 - Update to 1.21 - Fixed key material reuse for multiple...

PT-2026-49589

Name of the Vulnerable Software and Affected Versions AIOHTTP versions prior to 3.14.1 Description The server hostname TLS SNI Server Name Indication check can be bypassed when an existing connection is reused. If an application makes multiple requests to the same domain using different per-reque...

vader-toctou

OPERATION VADER — TOCTOU EXPLOITATION SYLLABUS OPERATIONS...

SUSE CVE-2026-45445

Issue summary: When an application drives an AES-OCB context through the public EVPCipher one-shot interface, the application-supplied initialisation vector IV is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV...

OESA-2026-2651 openssl security update

OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security TLS and Secure Sockets Layer SSL protocols. Security Fixes: Issue summary: When an application drives an AES-OCB context through the public EVPCipher one-shot interface, the application-supplied...

Exploit for CVE-2026-53646

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CVE-2026-50631 Apache CXF: OAuth2: TOCTOU Race Condition in Refresh Token Processing

A race condition in AbstractOAuthDataProvider allows concurrent requests using the same Refresh Token to bypass single-use semantics and generate multiple valid Access Tokens, when 'recycleRefreshTokens' is set to false. A leaked refresh token can be replayed concurrently by multiple attackers or...

CVE-2026-50631

CVE-2026-50631 : A TOCTOU race condition in Apache CXF's AbstractOAuthDataProvider allows concurrent requests to reuse the same Refresh Token when recycleRefreshTokens is false, bypassing single-use semantics and generating multiple valid Access Tokens. This can enable token replay/abuse by multi...

PT-2026-55697

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 7.1.3 Linux kernel versions prior to 6.18.38 Linux kernel versions prior to 6.12.95 Linux kernel versions prior to 6.6.144 Linux kernel versions prior to 6.1.177 Linux kernel versions prior to 5.15.211 Linux kern...

EulerOS Virtualization 2.13.1 : curl (EulerOS-SA-2026-2368)

According to the versions of the curl packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : libcurl can in some circumstances reuse the wrong connection when asked to do an Negotiate-authenticated HTTP or HTTPS request. libcu...