CVE-2026-44559 Open WebUI: Missing Access Check on Channel Members Endpoint for Standard Channels

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the GET /api/v1/channels/id/members endpoint only checks membership for group and dm channel types lines 467-469. For standard channels — including private ones — there is no...

CVE-2026-4054 SVG content served through Mattermost image proxy despite Content-Type restrictions causes client-side denial of service

Mattermost versions 11.5.x = 11.5.1, 10.11.x = 10.11.13, 11.4.x = 11.4.3 Fail to validate the response body of proxied images, which allows a remote attacker to enact client-side DoS via an SVG file served from an attacker-controlled origin under a non-SVG Content-Type header e.g. image/png...

OESA-2026-2326 lcms2 security update

LittleCMS intends to be an OPEN SOURSE small-footprint color management engine,with special focus on accuracy and performence.It uses the International Color Consortium standard ICC, which is the modern standard when regarding to color management. The ICC specification is widely used and is...

Security Bulletin: Multiple vulnerabilities may affect IBM® SDK, Java™ Technology Edition for IBM Content Collector for SAP Applications

Summary Multiple Vulnerabilities were disclosed as part of the Oracle January 2026 Critical Patch Update. Vulnerability Details CVEID:CVE-2026-21945 DESCRIPTION: Java SE is vulnerable to a denial of service, caused by an easily exploitable vulnerability issue that allows an remote attacker to cau...

CVE-2026-44662

rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.0 to before 0.10.79, CipherCtxRef::cipherupdate, CipherCtxRef::cipherupdatevec, and symm::Crypter::update incorrectly sized output buffers when used with AES key-wrap-with-padding ciphers EVPaes128,192,256wrappad...

GHSA-5GC6-XHV4-2WG6 Open WebUI has an IDOR vulnerability in the pin_channel_message API endpoint

Summary Pin/Unpin is a write operation modifies the message's ispinned , pinnedby, pinnedat fields, but in standard channels it only checks read permission, allowing users with read-only access to pin/unpin any message. Details...

firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Memory safety bugs present in Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. Some of these bugs showed evidence of memory corrupti...

Arbitrary Code Injection

Overview Affected versions of this package are vulnerable to Arbitrary Code Injection via the StandardEvaluationContext method. An attacker can execute arbitrary code and exfiltrate credentials by supplying crafted Spring Expression Language SpEL expressions as an authenticated user with...

bouncycastle: BC-JAVA: GOSTCTR implementation unable to process more than 255 blocks correctly

A flaw was found in Legion of the Bouncy Castle Inc. BC-JAVA bcprov. The GOSTCTR implementation is unable to securely process more than 255 blocks of data due to keystream reuse. This issue allows an attacker to break the fundamental confidentiality of any data protected by the G3413CTRBlockCiphe...

CVE-2026-42555 Valtimo: SpEL injection via StandardEvaluationContext allows Remote Code Execution by admin users

Valtimo is an open-source business process automation platform. com.ritense.valtimo:document from 12.0.0 to before 12.32.0, com.ritense.valtimo:case from 13.0.0 to before 13.23.0, and com.ritense.valtimo:contract from 13.4.0 to before 13.23.0 evaluate Spring Expression Language SpEL expressions...

OpenTelemetry Java SDK has Unbounded Memory Allocation in W3C Baggage Propagation

Overview A vulnerability affects the baggage propagation implementation in opentelemetry-api and opentelemetry-extension-trace-propagators. Parsing oversized baggage causes unbounded memory allocation and CPU consumption. Because baggage is automatically re-injected into every outgoing request, t...

[SECURITY] Fedora 43 Update: kernel-headers-7.0.6-100.fc43

Kernel-headers includes the C header files that specify the interface between the Linux kernel and userspace libraries and programs. The header files define structures and constants that are needed for building most standard programs and are also needed for rebuilding the glibc package...

Valtimo 代码注入漏洞

Valtimo is an open-source low-code platform for business process automation developed by Valtimo in the Netherlands. Versions of Valtimo from 12.0.0 to 12.32.0 contained a code injection vulnerability. This vulnerability stemmed from the use of StandardEvaluationContext to evaluate Spring...

net/url: Incorrect parsing of IPv6 host literals in net/url

The Go standard library function net/url.Parse insufficiently validated the host/authority component and accepted some invalid URLs by effectively treating garbage before an IP-literal as ignorable. The function should have rejected this as invalid...

golang: net/url: Memory exhaustion in query parameter parsing in net/url

A flaw was found in the net/url package in the Go standard library. The package does not enforce a limit on the number of unique query parameters it parses. A Go application using the net/http.Request.ParseForm method will try to process all parameters provided in the request. A specially crafted...

net/url: Incorrect parsing of IPv6 host literals in net/url

The Go standard library function net/url.Parse insufficiently validated the host/authority component and accepted some invalid URLs by effectively treating garbage before an IP-literal as ignorable. The function should have rejected this as invalid...

UBUNTU-CVE-2026-41051

csync2 uses insecure temporary directories when compiled with C99 or later, allowing for TOCTOU style attacks on the temporary directories...

CVE-2026-41051

CVE-2026-41051 affects csync2 and is due to the use of insecure temporary directories when csync2 is compiled with C99 or later, enabling TOCTOU-style issues in temporary paths. Public records indicate the vulnerability impacts openSUSE Tumbleweed’s csync2 package in the 2.0+git.1600444747.83b364...

crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building

A flaw was found in the Go standard library packages crypto/x509 and crypto/tls. During the process of building a certificate chain, an attacker can provide a large number of intermediate certificates. This excessive input is not properly limited, leading to an uncontrolled amount of work being...

golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root

A flaw was found in the internal/syscall/unix package in the Go standard library. If the target of the Root.Chmod function is replaced with a symbolic link during execution, specifically after Root.Chmod checks the target but before acting, the chmod operation will be performed on the file the...