CVE-2026-27826 MCP Atlassian has SSRF via unvalidated X-Atlassian-Jira-Url / X-Atlassian-Confluence-Url headers

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to version 0.17.0, an unauthenticated attacker who can reach the mcp-atlassian HTTP endpoint can force the server process to make outbound HTTP requests to an arbitrary attacker-controlled URL b...

EUVD-2026-10745

An improper neutralization of special elements vulnerability was identified in GitHub Enterprise Server that allowed an attacker with push access to a repository to achieve remote code execution on the instance. During a git push operation, user-supplied push option values were not properly...

GHSA-GHC4-35X6-CRW5 Envoy has RBAC Header Validation Bypass via Multi-Value Header Concatenation

Summary The Envoy RBAC Role-Based Access Control filter contains a logic vulnerability in how it validates HTTP headers when multiple values are present for the same header name. Instead of validating each header value individually, Envoy concatenates all values into a single comma-separated...

Envoy has RBAC Header Validation Bypass via Multi-Value Header Concatenation

Summary The Envoy RBAC Role-Based Access Control filter contains a logic vulnerability in how it validates HTTP headers when multiple values are present for the same header name. Instead of validating each header value individually, Envoy concatenates all values into a single comma-separated...

GO-2026-4597 traefik CVE-2024-45410 fix bypass: lowercase `Connection` tokens can delete traefik-managed forwarded identity headers (for example, `X-Real-Ip`) in github.com/traefik/traefik

traefik CVE-2024-45410 fix bypass: lowercase Connection tokens can delete traefik-managed forwarded identity headers for example, X-Real-Ip in github.com/traefik/traefik...

CVE-2026-30956

OneUptime is a solution for monitoring and managing online services. Prior to 10.0.21, a low‑privileged user can bypass authorization and tenant isolation in OneUptime v10.0.20 and earlier by sending a forged is-multi-tenant-query header together with a controlled projectid header. Because the...

CVE-2026-3854

CVE-2026-3854 describes an RCE vulnerability in GitHub Enterprise Server arising during git push option handling. An attacker with push access could abuse unsanitized user-supplied push option values that are incorporated into internal service headers; because the header format uses a delimiter t...

CVE-2026-30956

OneUptime is a solution for monitoring and managing online services. Prior to 10.0.21, a low‑privileged user can bypass authorization and tenant isolation in OneUptime v10.0.20 and earlier by sending a forged is-multi-tenant-query header together with a controlled projectid header. Because the...

cpython: wsgiref.headers.Headers allows header newline injection in Python

Missing newline filtering has been discovered in Python. User-controlled header names and values containing newlines can allow injecting HTTP headers...

curl: CURLOPT_UNRESTRICTED_AUTH Dangerous Default Documentation Gap

Summary: CURLOPTUNRESTRICTEDAUTH=1 instructs libcurl to send credentials to ALL hosts during redirect chains, 'possibly again and again as the following hosts can keep redirecting to new hosts.' The documentation explicitly warns this is dangerous, but the default behavior is also risky: curl onl...

PT-2026-24489

Istio is an open platform to connect, manage, and secure microservices. Prior to 1.29.1, 1.28.5, and 1.27.8, a vulnerability in Envoy RBAC header matching could allow authorization policy bypass when policies rely on HTTP headers that may contain multiple values. An attacker could craft requests...

PT-2026-24626

Summary The Envoy RBAC Role-Based Access Control filter contains a logic vulnerability in how it validates HTTP headers when multiple values are present for the same header name. Instead of validating each header value individually, Envoy concatenates all values into a single comma-separated...

Envoy 安全漏洞

Envoy is an open-source gateway program developed by Enphase for connecting smart home devices. There are security vulnerabilities in versions of Envoy prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13. These vulnerabilities stem from logical flaws in the role-based access control filter, which may...

PT-2026-29605

Name of the Vulnerable Software and Affected Versions AIOHTTP versions prior to 3.13.4 Description A response with an excessive number of multipart headers may be allowed to use more memory than intended, potentially leading to a denial-of-service condition. Multipart headers were not subject to...

GHSA-6MGF-V5J7-45CR OpenClaw: fetch-guard forwards custom authorization headers across cross-origin redirects

OpenClaw's fetchWithSsrFGuard... followed cross-origin redirects while preserving arbitrary caller-supplied headers except for a narrow denylist Authorization, Proxy-Authorization, Cookie, Cookie2. This allowed custom authorization headers such as X-Api-Key, Private-Token, and similar sensitive...

OpenClaw: fetch-guard forwards custom authorization headers across cross-origin redirects

OpenClaw's fetchWithSsrFGuard... followed cross-origin redirects while preserving arbitrary caller-supplied headers except for a narrow denylist Authorization, Proxy-Authorization, Cookie, Cookie2. This allowed custom authorization headers such as X-Api-Key, Private-Token, and similar sensitive...

SUSE-SU-2026:20710-1 Security update for python311

This update for python311 fixes the following issues: - CVE-2025-11468: preserving parens when folding comments in email headers. bsc1257029 - CVE-2026-0672: rejects control characters in http cookies. bsc1257031 - CVE-2026-0865: rejecting control characters in wsgiref.headers.Headers, which coul...

Chrome Extension Turns Malicious After Ownership Transfer, Enabling Code Injection and Data Theft

Two Google Chrome extensions have turned malicious after what appears to be a case of ownership transfer, offering attackers a way to push malware to downstream customers, inject arbitrary code, and harvest sensitive data. The extensions in question, both originally associated with a developer...

USN-8018-2: Python regression

USN-8018-1 fixed vulnerabilities in python3. That update introduced regressions. The patches for CVE-2025-15366 and CVE-2025-15367 caused behavior regressions in IMAP and POP3 handling, which upstream chose to avoid by not backporting them. Additionally, the patch for CVE-2026-0865 incorrectly...

CVE-2026-29067

ZITADEL is an open source identity management platform. From version 4.0.0-rc.1 to 4.7.0, a potential vulnerability exists in ZITADEL's password reset mechanism in login V2. ZITADEL utilizes the Forwarded or X-Forwarded-Host header from incoming requests to construct the URL for the password rese...