lxml: lxml-html-clean: lxml: URL bypass vulnerability in Cleaner via missing xlink:href

A flaw was found in lxml, a library for processing XML and HTML in Python. The lxml.html.defs.linkattrs were missing xlink:href, which could allow an attacker to bypass URL filtering mechanisms. This vulnerability enables URL bypass attacks in embedded content such as Scalable Vector Graphics SVG...

net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution

A flaw was found in net/url, a component of golang. This vulnerability arises when resolving relative paths that contain numerous parent directory '..' segments. A remote attacker could exploit this by providing a specially crafted path, leading to quadratic time complexity and excessive memory...

gitpython: GitPython: Information disclosure via environment variable expansion in URL handling

A flaw was found in GitPython. This vulnerability allows a remote attacker to exfiltrate sensitive information, such as environment variables, by crafting malicious URLs. When these URLs are processed during Git operations like fetch or pull, the environment variables are expanded and transmitted...

tomcat: Apache Tomcat: Security constraint bypass via improper URL encoding in rewrite valve

A flaw was found in Apache Tomcat. This vulnerability, located in the rewrite valve, is due to improper handling of URL encoding hex encoding. A remote attacker could exploit this to bypass security constraints in certain configurations, potentially gaining unauthorized access or performing actio...

net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution

A flaw was found in net/url, a component of golang. This vulnerability arises when resolving relative paths that contain numerous parent directory '..' segments. A remote attacker could exploit this by providing a specially crafted path, leading to quadratic time complexity and excessive memory...

CVE-2026-55252

The OpenRun GitOps platform (prior to version 0.17.7 ) is vulnerable to an open redirect attack due to a validation bypass in its redirect URL logic. Attackers can bypass host and schema restrictions by providing a redirect URL that includes a //host path (e.g., http://127.0.0.1:25222//fushuling....

CVE-2026-55252 OpenRun: Redirect URL validation bypass using //host paths leads to Open Redirect

OpenRun is an open-source, self-hosted GitOps platform for deploying web apps and internal tools to Docker or Kubernetes. Prior to version 0.17.7, the restrictions on redirect URLs in openrun can be bypassed by attackers, leading to open redirect attacks. This issue has been patched in version...

CVE-2026-55252 OpenRun: Redirect URL validation bypass using //host paths leads to Open Redirect

OpenRun is an open-source, self-hosted GitOps platform for deploying web apps and internal tools to Docker or Kubernetes. Prior to version 0.17.7, the restrictions on redirect URLs in openrun can be bypassed by attackers, leading to open redirect attacks. This issue has been patched in version...

net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution

A flaw was found in net/url, a component of golang. This vulnerability arises when resolving relative paths that contain numerous parent directory '..' segments. A remote attacker could exploit this by providing a specially crafted path, leading to quadratic time complexity and excessive memory...

@graphql-yoga/graphiql (>=4.4.1-alpha-20250905170435-b8c51271d9eae6fded9e6c7395e3e20280733237, <=4.5.1), @settlemint/sdk-mcp (>=2.6.2-main01bd70e9, <=2.6.12) +1 more potentially affected by CVE-2026-103921 via @graphql-tools/url-loader (>=9.0.0, <=9.0.5)

@graphql-tools/url-loader NPM version =9.0.0, =4.4.1-alpha-20250905170435-b8c51271d9eae6fded9e6c7395e3e20280733237, =2.6.2-main01bd70e9, =1.0.0, =1.0.22 Source cves: CVE-2026-103921 Source advisory: SNYK:JS-GRAPHQLTOOLSURLLOADER-20510284...

@graphql-tools/prisma-loader (>=8.0.0-alpha-20230517123108-df347e95, <=8.0.17-alpha-20241113142246-527bbf8c4e20af3d172439ab4746fe676b3a61c5), @graphql-tools/url-loader (>=8.0.0-alpha-20230517123108-df347e95, <=9.1.9-rc-20260908112455-501eab0b35c6e76223e7ed3d60d6e26c72127f1a) +1 more potentially affected by CVE-2026-103921 via @graphql-tools/executor-legacy-ws (>=1.0.0-alpha-20230517123108-df347e95, <=1.1.35-rc-20260908112455-501eab0b35c6e76223e7ed3d60d6e26c72127f1a)

@graphql-tools/executor-legacy-ws NPM version =1.0.0-alpha-20230517123108-df347e95, =8.0.0-alpha-20230517123108-df347e95, =8.0.0-alpha-20230517123108-df347e95, =9.1.9-rc-20260908112455-501eab0b35c6e76223e7ed3d60d6e26c72127f1a - graphql-config 5.0.0-alpha-20230519081831-037f0ba Source cves:...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation via a hardcoded rejectUnauthorized: false in buildWSLegacyExecutor, which unconditionally disables TLS certificate validation for all wss:// connections and cannot be overridden by callers. An attacker...

mcp-atlassian has an incomplete SSRF remediation

SummaryThe UserTokenMiddleware extracts URLs from X-Atlassian-Jira-Url and X-Atlassian-Confluence-Url HTTP headers and passes them directly to API client constructors without any SSRF validation. Affected Package- Ecosystem: PyPI- Package: mcp-atlassian- Affected versions: all versions before fix...

PYSEC-2026-4084 mcp-atlassian has an incomplete SSRF remediation

Summary The UserTokenMiddleware extracts URLs from X-Atlassian-Jira-Url and X-Atlassian-Confluence-Url HTTP headers and passes them directly to API client constructors without any SSRF validation. Affected Package - Ecosystem: PyPI - Package: mcp-atlassian - Affected versions: all versions before...

MCP Atlassian: SSRF Protection Bypass

Environment- Project: sooperset/mcp-atlassian- Affected function: validateurlforssrf- Affected path: header-based Jira/Confluence URL authentication flow- Tested endpoint: POST /mcp- Tested version: 2.14.5 DescriptionThe SSRF protection in validateurlforssrf can be bypassed with a URL containing ...

PYSEC-2026-4096 MCP Atlassian: SSRF Protection Bypass

Environment - Project: sooperset/mcp-atlassian - Affected function: validateurlforssrf - Affected path: header-based Jira/Confluence URL authentication flow - Tested endpoint: POST /mcp - Tested version: 2.14.5 Description The SSRF protection in validateurlforssrf can be bypassed with a URL...

MCP Atlassian: SSRF via DNS Rebinding in Header-Based Authentication Flow

SummaryThe SSRF protection for header-based authentication uses a validate-then-use pattern vulnerable to DNS rebinding. validateurlforssrf resolves the hostname via DNS and checks that the resolved IP is globally routable. However, the actual HTTP request happens later, during which the DNS reco...

PYSEC-2026-4083 MCP Atlassian: SSRF via DNS Rebinding in Header-Based Authentication Flow

Summary The SSRF protection for header-based authentication uses a validate-then-use pattern vulnerable to DNS rebinding. validateurlforssrf resolves the hostname via DNS and checks that the resolved IP is globally routable. However, the actual HTTP request happens later, during which the DNS...

PYSEC-2026-4104 MCP Atlassian: MCP HTTP Client Server-Local File Exfiltration via Unvalidated Attachment Upload Path

Summary The mcp-atlassian server exposes an MCP tool confluenceuploadattachment and the Jira attachment variant that accepts an arbitrary server-side file path and opens it for upload without any path validation. When the server is deployed in HTTP transport mode streamable-http or sse, a remote,...

MCP Atlassian: MCP HTTP Client Server-Local File Exfiltration via Unvalidated Attachment Upload Path

SummaryThe mcp-atlassian server exposes an MCP tool confluenceuploadattachment and the Jira attachment variant that accepts an arbitrary server-side file path and opens it for upload without any path validation. When the server is deployed in HTTP transport mode streamable-http or sse, a remote,...