Security Bulletin: Langflow OSS is affected by server-side request forgery due to missing URL validation in flow components

Summary Langflow uses outbound HTTP request functionality as part of several flow components, including components for LM Studio, Home Assistant, DeepSeek, xAI, Glean, HuggingFace Inference API, Ollama, LiteLLM, and Docling Serve. These components accept user-supplied URL values and issue...

CVE-2026-18545

IBM Langflow OSS 1.0.0 through 1.11.1 is vulnerable to server-side request forgery SSRF. This may allow an authenticated attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks...

CVE-2026-19294

IBM Langflow OSS versions 1.0.0 through 1.11.1 are affected by an improper authorization flaw (CWE-639). Deprecated build endpoints remain fully routed but lack the object-level ownership check present on the modern equivalent endpoint, allowing any authenticated user to enumerate and execute ano...

CVE-2026-18904 Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities

IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to obtain sensitive information and inject unauthorized messages due to a namespace collision between user identifiers...

CVE-2026-18899 Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities

IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to read arbitrary files due to path traversal...

CVE-2026-18899 Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities

IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to read arbitrary files due to path traversal...

CVE-2026-18899

IBM Langflow OSS 1.0.0 through 1.11.1 is vulnerable to a path traversal (CWE-22) that allows an unauthenticated remote attacker to read arbitrary files. The root cause is in the public flow-build endpoint, which accepts an unvalidated files parameter forwarded directly to the storage backend; the...

CVE-2026-18891

IBM Langflow OSS versions 1.0.0 through 1.11.1 is affected by an improper authentication flaw (CWE-287) in the MCP project authentication function. When MCP Composer is enabled, the function omits the default auth_type=none value from the set of modes requiring an API key, causing unauthenticated...

CVE-2026-18891 Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities

IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to execute arbitrary flows and access sensitive information due to improper authentication...

CVE-2026-18891 Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities

IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to execute arbitrary flows and access sensitive information due to improper authentication...

CVE-2026-18545 Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities

IBM Langflow OSS 1.0.0 through 1.11.1 is vulnerable to server-side request forgery SSRF. This may allow an authenticated attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks...

CVE-2026-18545 Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities

IBM Langflow OSS 1.0.0 through 1.11.1 is vulnerable to server-side request forgery SSRF. This may allow an authenticated attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks...

CVE-2026-55247 plone.app.event: Denial of service via iCalendar import

plone.app.event provides the event content type for Plone. Prior to versions 5.2.4 and 6.0.1, the iCalendar import in src/plone/app/event/ical/importer.py accepts insufficiently restricted calendar and event URLs, does not adequately bound downloaded bytes or imported events, and commits work per...

CVE-2026-55245 Bifrost: SSRF deny-list incomplete: isPublicIP permits CGNAT, IPv6 6to4/NAT64, and site-local in FetchAndEncodeURL

Bifrost is an enterprise AI gateway for routing requests to model providers. Prior to 1.5.17, the isPublicIP function in core/providers/utils/fetch.go, reached through FetchAndEncodeURL for Bedrock and Vertex image or document URLs, classifies Carrier-Grade NAT 100.64.0.0/10, IPv6 6to4 2002::/16,...

CVE-2026-82289

Gitingest (through 0.3.1 ) has a flaw in its _validate_host function that accepts any hostname with a git. , gitlab. , or github. prefix without verifying membership in a known-hosts list. An attacker can supply a URL with a crafted hostname (e.g., github.evil.com), causing the application to ope...

CVE-2026-82289 Gitingest Prefix-Based Git Host Check Enables Request Forgery and Token Disclosure

Gitingest through 0.3.1 fails to properly validate hostnames in validatehost, accepting any host with a git., gitlab., or github. prefix regardless of known-hosts list membership. Attackers can submit URLs with attacker-controlled hostnames to trigger outbound connections to arbitrary hosts and...

CVE-2026-82289 Gitingest Prefix-Based Git Host Check Enables Request Forgery and Token Disclosure

Gitingest through 0.3.1 fails to properly validate hostnames in validatehost, accepting any host with a git., gitlab., or github. prefix regardless of known-hosts list membership. Attackers can submit URLs with attacker-controlled hostnames to trigger outbound connections to arbitrary hosts and...

CVE-2026-82289 Gitingest Prefix-Based Git Host Check Enables Request Forgery and Token Disclosure

Gitingest through 0.3.1 fails to properly validate hostnames in validatehost, accepting any host with a git., gitlab., or github. prefix regardless of known-hosts list membership. Attackers can submit URLs with attacker-controlled hostnames to trigger outbound connections to arbitrary hosts and...

CVE-2026-82285 BISHENG Unauthenticated Server-Side Request Forgery via Workflow Report Callback

bisheng through 2.6.0-fix2 contains a server-side request forgery vulnerability in the POST /api/v1/workflow/report/callback endpoint that lacks authentication and applies no URL scheme restrictions or host filtering. Unauthenticated attackers can supply arbitrary URLs to enumerate internal netwo...

CVE-2026-82285 BISHENG Unauthenticated Server-Side Request Forgery via Workflow Report Callback

bisheng through 2.6.0-fix2 contains a server-side request forgery vulnerability in the POST /api/v1/workflow/report/callback endpoint that lacks authentication and applies no URL scheme restrictions or host filtering. Unauthenticated attackers can supply arbitrary URLs to enumerate internal netwo...