CVE-2026-55213

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit edd7a120bfc4af11ac0cbebce2a43cc1f93f9af1, when h2o processes a QPACK instruction sent from the peer over HTTP/3, lib/http3/qpack.c might allocate an on-stack buffer as large as approximately 800 KB by calling...

HTTP Fetch, Linux dup2 Command Shell, Reverse TCP Stager

Fetch and execute an RISC-V 64-bit payload from an HTTP server. dup2 socket in s1, then execve. Connect back to the attacker Module Options This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework module MetasploitModule inclu...

HTTP Fetch

Fetch and execute a script to determine the host arch and execute a payload from an HTTP server. Module Options This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework module MetasploitModule include...

HTTP Fetch, Linux dup2 Command Shell, Bind TCP Stager

Fetch and execute an RISC-V 64-bit payload from an HTTP server. dup2 socket in s1, then execve. Listen for a connection Module Options This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework module MetasploitModule include...

HTTP Fetch, Linux dup2 Command Shell, Bind TCP Stager

Fetch and execute an RISC-V 32-bit payload from an HTTP server. dup2 socket in s1, then execve. Listen for a connection Module Options...

CVE-2026-41876

R-SOFT DMS is vulnerable to OS Command Injection in konwertujAction function. The document converter executes shell commands using unsanitized file paths and format parameters. This allows an authenticated attacker to execute arbitrary system commands with the privileges of the web server user...

CVE-2026-41876 OS Command Injection in R-SOFT DMS

R-SOFT DMS is vulnerable to OS Command Injection in konwertujAction function. The document converter executes shell commands using unsanitized file paths and format parameters. This allows an authenticated attacker to execute arbitrary system commands with the privileges of the web server user...

CVE-2026-41876

CVE-2026-41876 affects R-SOFT DMS. The vulnerability is an OS Command Injection in konwertujAction(), where the document converter executes shell commands using unsanitized file paths and format parameters, allowing an authenticated attacker to run arbitrary commands with the web server user’s pr...

RHSA-2026:36846 Red Hat Security Advisory: httpd:2.4 security update

Bulletin has no description...

httpd: mod_authn_socache: NULL pointer dereference can cause a child process crash

A flaw was found in the modauthnsocache module of httpd. This vulnerability allows an unauthenticated remote user to crash a child process due to a NULL pointer dereference when the server is operating in a caching forward proxy configuration...

httpd: mod_proxy_ajp: heap-based buffer over-read and memory disclosure in ajp_parse_data()

A flaw was found in the modproxyajp module of httpd. When processing AJP Apache JServ Protocol messages, the ajpparsedata function attempts to read data beyond the allocated buffer size, allowing an attacker or a malformed request to cause a heap-based buffer over-read. This issue potentially lea...

Security update for apache2 (important)

openSUSE security update: security update for apache2 ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:21235-1 Rating: important References: bsc1267503 bsc1267955 bsc1267956 bsc1267962 bsc1267963 bsc1267965 bsc1267969 bsc1267970 bsc1267971 bsc1267972...

DEBIAN-CVE-2026-59153

Anki is a program for creating and reviewing flashcards. Prior to 25.09.3, Anki launches a local HTTP server to serve media files and web pages for parts of its interface, but requests from other origins were not sufficiently blocked. A malicious website could potentially trigger side-effecting...

Important: Red Hat Security Advisory: httpd:2.4 security update

An update for the httpd:2.4 module is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabilit...

mod_http2: Apache HTTP Server: HTTP/2 DoS by Memory Increase

A flaw was found in Apache HTTP Server. This late release of memory after effective lifetime vulnerability allows a remote, unauthenticated attacker to cause a denial of service DoS. The vulnerability can lead to resource exhaustion, making the server unavailable to legitimate users...

httpd: mod_authn_socache: NULL pointer dereference can cause a child process crash

A flaw was found in the modauthnsocache module of httpd. This vulnerability allows an unauthenticated remote user to crash a child process due to a NULL pointer dereference when the server is operating in a caching forward proxy configuration...

CVE-2026-59153

Anki’s local HTTP server vulnerability (CVE-2026-59153) affects Anki prior to version 25.09.3. The embedded local server serving media/files did not sufficiently block cross-origin requests from other origins, enabling potential side-effecting requests from malicious sites. The CVSS-based data in...

PYSEC-2026-1330 ESP-IDF web_server basic auth bypass using empty or incomplete Authorization header

Summary On the ESP-IDF platform, ESPHome's webserver authentication check can pass incorrectly when the client-supplied base64-encoded Authorization value is empty or is a substring of the correct value e.g., correct username with partial password. This allows access to webserver functionality...

PYSEC-2026-1396 FastChat Server-Side Request Forgery vulnerability

A Server-Side Request Forgery SSRF vulnerability was identified in the lm-sys/fastchat web server, specifically in the affected version git 2c68a13. This vulnerability allows an attacker to access internal server resources and data that are otherwise inaccessible, such as AWS metadata credentials...

PYSEC-2026-1992 twisted.web has disordered HTTP pipeline response

Summary The HTTP 1.0 and 1.1 server provided by twisted.web could process pipelined HTTP requests out-of-order, possibly resulting in information disclosure. PoC 0. Start a fresh Debian container: sh docker run --workdir /repro --rm -it debian:bookworm-slim 1. Install twisted and its dependencies...