Briefs

The n8n AI Agents module in versions prior to 2.27.4 and between 2.28.0 and 2.28.1 failed to enforce configured 'Allowed HTTP Request Domains' restrictions, allowing an authenticated member-level user with 'use-only' access to a shared credential to bypass these domain restrictions and exfiltrate sensitive secrets to an attacker-controlled server.

A denial-of-service vulnerability exists in the `Bzip2Decoder` handler within Netty's `netty-codec-compression` and `netty-codec` libraries, allowing a remote attacker to exploit CVE-2026-59901 by providing a specially crafted bzip2 stream, which causes an infinite loop in the run-length encoding state machine, leading to the permanent hang of an event-loop thread and application denial of service.

A critical vulnerability (CVE-2026-56820) in Netty's `OcspClient` allows a bad actor to bypass certificate revocation checks by replaying a valid OCSP 'GOOD' status response from an unrelated certificate, enabling a certificate validation bypass for any certificate issued by the same Certificate Authority.

A misconfiguration vulnerability (CVE-2026-56817) in Netty's XmlDecoder component allows attackers to send XML with DOCTYPE declarations to an unconfigured XML factory, potentially leading to XML External Entity (XXE) injection if the underlying Aalto XML parser resolves external entities, impacting Netty applications using `netty-codec-xml` versions 4.1.0.Final through 4.1.135.Final and 4.2.0.Final through 4.2.15.Final.

A vulnerability in Netty's HTTP/3 `Http3FrameCodec`, tracked as CVE-2026-56816, allows an unauthenticated remote attacker to cause a denial of service by sending crafted reserved HTTP/3 frames with an excessively large, unvalidated payload length, leading to server memory exhaustion.

A high-severity vulnerability, CVE-2026-55831, in Netty's SPDY SETTINGS decoder allows a remote unauthenticated attacker to trigger a denial of service by sending a crafted SPDY/3.1 SETTINGS frame that leads to excessive heap growth and CPU consumption due to unbounded map entries in `DefaultSpdySettingsFrame`.

A vulnerability, CVE-2026-55851, in Netty's `HAProxyMessageDecoder` can lead to unbounded memory exhaustion when an attacker sends a specific PROXY protocol v2 binary prefix followed by a version byte of `0xFF`, causing a signed-byte sentinel collision that traps the decoder in a version-detection loop and ultimately exhausts the JVM's direct memory allocation, resulting in a denial of service.

Attackers can exploit CVE-2026-64829, a session invalidation vulnerability in Question2Answer through version 1.8.8, where the forgot-password reset flow fails to clear the sessioncode field, allowing an attacker with a previously obtained remember-me cookie to retain authenticated access even after the account's password has been reset.

A critical access bypass vulnerability (SA-CONTRIB-2026-081) exists in the Internationalization Single Sign-On module for Drupal, affecting versions prior to 1.8.0, allowing an attacker to bypass authentication mechanisms and potentially gain unauthorized access or elevate privileges within the application.

A high-severity vulnerability, CVE-2026-8933, in Ubuntu's snap-confine component of the snapd service allows an unprivileged local user to gain root access on affected Ubuntu Desktop systems by exploiting race conditions during temporary file creation, enabling full administrative control.

FFmpeg versions 0.6.3 through 8.1.2 are vulnerable to a remote denial of service (DoS) via CVE-2026-64834, allowing an attacker to trigger an infinite loop in the `rtp_asf_fix_header` function by sending a crafted RTP/ASF stream, leading to CPU exhaustion and service unavailability.

A high-severity out-of-bounds memory access vulnerability, tracked as CVE-2026-64835, exists in FFmpeg versions 4.4 through 8.1.2 within the ADX audio decoder, allowing attackers to trigger both out-of-bounds reads and writes by supplying a crafted ADX or AAX audio file with a mid-stream channel layout change, potentially leading to denial of service, information disclosure, or arbitrary code execution.

FFmpeg versions 0.7.1 through 8.1.2 contain an out-of-bounds read vulnerability in the S/PDIF muxer, allowing attackers to exploit a missing bounds check in the `spdif_header_dts4` function by supplying a crafted DTS stream with an oversized `core_size` value during S/PDIF re-muxing, leading to unauthorized memory reads beyond the packet buffer and potential information disclosure or denial of service.

FFmpeg versions 4.4 through 8.1.2 are vulnerable to a double-free condition within the NVIDIA NVDEC hardware decoder component (libavcodec/nvdec.c), allowing attackers to trigger memory corruption by providing a specially crafted video file, which occurs when an error path frees memory via `nvdec_fdd_priv_free` due to no decoder surfaces remaining, and a subsequent layer attempts to free the same frame description data, resulting in a double-free of the underlying decoder context in any FFmpeg-based application using NVDEC hardware acceleration.

A privilege escalation vulnerability (CVE-2026-65015) exists in n8n's AI Agents feature, allowing users with the read-only Project Viewer role to execute arbitrary tool nodes and access unauthorized credential secrets, potentially leading to arbitrary command execution on the n8n host.

A Time-of-Check to Time-of-Use (TOCTOU) race condition in n8n's Git node allows an authenticated user to achieve remote code execution (RCE) by swapping a directory with a symlink after path validation but before cloning, leading to the loading of a crafted malicious custom node upon server restart.

A DOM-Based Cross-Site Scripting (XSS) vulnerability in n8n allows an attacker to inject scripts into the HTML preview through an unsandboxed iframe srcdoc, enabling the injected script to run with the same origin as the editor; if a victim opens this compromised preview, the script can call authenticated APIs using their session, allowing an account with 'global:member' privileges to exploit this to gain unauthorized access or perform actions.

A high-severity DOM-based cross-site scripting (XSS) vulnerability exists in n8n versions prior to 1.123.64, 2.29.8, and 2.30.1, allowing an attacker with global:member privileges to inject malicious JavaScript into an unsandboxed HTML preview, enabling same-origin execution and unauthorized API calls using a victim's session upon preview access.

A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the Git node's clone operation in n8n versions prior to 1.123.64, 2.29.8, and 2.30.1. This vulnerability allows authenticated users to bypass path restrictions by swapping a validated directory for a symlink, enabling them to plant a crafted repository in the community node directory. Upon the next restart, n8n loads this as a custom node, leading to arbitrary JavaScript execution on the server, affecting both self-hosted and cloud instances.

Roundup of Atlassian security advisories published in July 2026.

An authorization bypass vulnerability, CVE-2026-65013, exists in Onlook through version 0.2.32, allowing authenticated attackers to access and manipulate other users' resources by supplying arbitrary UUID values to tRPC API procedures such as project.get, member.remove, and chat.conversation.delete without proper authorization, leading to unauthorized data exposure, modification, or deletion.

A stack buffer overflow vulnerability exists in the Vulkan HEVC hardware decoder within FFmpeg versions 8.0 through 8.1.2, allowing remote attackers to achieve arbitrary code execution by crafting a malicious HEVC/H.265 bitstream with an oversized vps_num_hrd_parameters value that overwrites return addresses and adjacent stack frames in the vk_hevc_end_frame function.

FFmpeg versions 2.1 through 8.1.2 contain a heap buffer overflow vulnerability (CVE-2026-64830) in the VobSub subtitle demuxer, allowing attackers to corrupt adjacent heap memory by supplying a malicious .sub/.idx subtitle file, potentially leading to arbitrary code execution in applications using FFmpeg's VobSub demuxer.

CVE-2026-13321 describes a vulnerability in the BIND resolver where it incorrectly accepts validly-signed NSEC records that contain a 'Next Domain Name' field pointing outside the signer's zone, impacting integrity with a CVSSv3.1 score of 8.6 and requiring immediate updates to affected BIND 9 installations.

A critical vulnerability (CVE-2026-13204) in Internet Systems Consortium (ISC) BIND 9 can lead to a denial-of-service condition where the server exits unexpectedly due to an assertion failure during DNSSEC validation of specific NSEC/NSEC3 record configurations. This allows an unauthenticated attacker to cause a BIND 9 DNS resolver to crash, disrupting DNS resolution services.

This vulnerability affects BIND 9 resolver (`named`) and can lead to unexpected program termination (denial of service). The issue occurs when the resolver receives specific, delayed, or out-of-order responses to queries for CNAME or DNAME and A records. Specifically, if an authoritative server delays a DNAME or self-referential CNAME response while providing an A record, the `named` process may crash.

A DNSSEC validating resolver, specifically BIND 9 versions within the ranges 9.11.0-9.18.50, 9.20.0-9.20.24, 9.21.0-9.21.23, and their S1 variants, is vulnerable to a denial-of-service attack where an attacker can launch a random subdomain attack against a DNSSEC-signed zone by sending queries faster than the resolver can perform validation, leading to runaway memory usage and potentially exceeding configured limits by orders of magnitude.

A resource exhaustion vulnerability, CVE-2026-11605, affects specific versions of ISC BIND 9, where DNSSEC validation disproportionately consumes CPU resources when processing superfluous RRSIG records, potentially leading to a denial of service.

An attacker can exploit CVE-2026-11331, a flaw in ISC BIND 9's RPZ (Response Policy Zone) processing, by crafting long query names to trigger a mishandled NAMETOOLONG error, leading to either a bypass of RPZ rules or a denial of service due to an unexpected exit of the BIND 9 software.

Xpoda Türkiye Informatics Technology Inc.'s No Code Platform, specifically versions 4.3.1.0 through 20260722, is critically vulnerable to an SQL injection (CVE-2026-2395) that allows unauthenticated remote attackers to achieve high impact on the confidentiality, integrity, and availability of the system.