CVE-2026-63311

NLTK (Python NLP library) versions

CVE-2026-63311 NLTK before 3.10.0 SSRF via DNS Resolution Failure

NLTK before 3.10.0 affected versions = 3.9.4 contains a server-side request forgery SSRF vulnerability in the validatenetworkurl function in nltk/pathsec.py. The resolvehostname helper catches OSError and ValueError during socket.getaddrinfo and returns an empty list; when DNS resolution fails, t...

CVE-2026-63311 NLTK before 3.10.0 SSRF via DNS Resolution Failure

NLTK before 3.10.0 affected versions = 3.9.4 contains a server-side request forgery SSRF vulnerability in the validatenetworkurl function in nltk/pathsec.py. The resolvehostname helper catches OSError and ValueError during socket.getaddrinfo and returns an empty list; when DNS resolution fails, t...

CVE-2026-63311 NLTK before 3.10.0 SSRF via DNS Resolution Failure

NLTK before 3.10.0 affected versions = 3.9.4 contains a server-side request forgery SSRF vulnerability in the validatenetworkurl function in nltk/pathsec.py. The resolvehostname helper catches OSError and ValueError during socket.getaddrinfo and returns an empty list; when DNS resolution fails, t...

CVE-2026-63311: Server-Side Request Forgery (SSRF)

NLTK before 3.10.0 affected versions = 3.9.4 contains a server-side request forgery SSRF vulnerability in the validatenetworkurl function in nltk/pathsec.py. The resolvehostname helper catches OSError and ValueError during socket.getaddrinfo and returns an empty list; when DNS resolution fails, t...

PT-2026-79562

Name of the Vulnerable Software and Affected Versions NLTK versions prior to 3.10.0 Description A server-side request forgery SSRF issue exists in the validate network url function within nltk/pathsec.py. The resolve hostname helper function catches OSError and ValueError during socket.getaddrinf...

FreeBSD : tailscale -- Insufficient validation of 4via6 subnet router destinations (4bf4495e-9d4e-11f1-a129-901b0e9408dc)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 4bf4495e-9d4e-11f1-a129-901b0e9408dc advisory. Tailscale team reports: Insufficient validation of 4via6 subnet router destinations permitted access to...

Linux Distros Unpatched Vulnerability : CVE-2026-63311

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NLTK before 3.10.0 affected versions = 3.9.4 contains a server-side request forgery SSRF vulnerability in the validatenetworkurl function in nltk/pathsec.py. Th...

GHSA-5VF6-JRQR-78FJ Unleash: Addon webhook URL is dialed server-side with no internal-address filtering, enabling SSRF to internal services / cloud metadata and exfiltration of configured request headers

Summary Unleash's addon/integration subsystem lets an operator configure a webhook and the Slack, Microsoft Teams, Datadog, and New Relic integrations with a target url parameter. Whenever a subscribed feature-flag event fires, the Unleash server itself issues an HTTP request to that configured...

CVE-2026-77775

Headroom's LLM proxy lets a client choose the upstream destination with the x-headroom-base-url request header. resolveopenaiupstreambase in headroom/proxy/handlers/openai.py accepts the header value, requires only that it parse with an http or https scheme and a hostname, and returns it for use ...

CVE-2026-77775 Headroom Proxy Sends Upstream Requests to a Client-Supplied Base URL Without Address Validation

Headroom's LLM proxy lets a client choose the upstream destination with the x-headroom-base-url request header. resolveopenaiupstreambase in headroom/proxy/handlers/openai.py accepts the header value, requires only that it parse with an http or https scheme and a hostname, and returns it for use ...

CVE-2026-77775

Headroom LLM proxy (headroomlabs-ai/headroom) is vulnerable to SSRF via the x-headroom-base-url request header. The functions _resolve_openai_upstream_base and _select_passthrough_base_url accept any URL with an http/https scheme and hostname without rejecting loopback, link-local, or RFC 1918 de...

EUVD-2026-63731

Lightdash stores the webhook URL supplied with a scheduled delivery and later posts to it from sendWebhook in packages/backend/src/clients/GoogleChat/GoogleChatClient.ts and in packages/backend/src/clients/MicrosoftTeams/MicrosoftTeamsClient.ts. In affected versions both call fetch on the stored...

PT-2026-79364

Headroom's LLM proxy lets a client choose the upstream destination with the x-headroom-base-url request header. resolve openai upstream base in headroom/proxy/handlers/openai.py accepts the header value, requires only that it parse with an http or https scheme and a hostname, and returns it for u...

CVE-2026-77775: Server-Side Request Forgery (SSRF)

Headroom's LLM proxy lets a client choose the upstream destination with the x-headroom-base-url request header. resolveopenaiupstreambase in headroom/proxy/handlers/openai.py accepts the header value, requires only that it parse with an http or https scheme and a hostname, and returns it for use ...

PT-2026-79962

MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. Prior to 3.15.0, the unauthenticated POST /api/2.0/mlflow/webhooks/id/test endpoint calls validate webhook url in mlflow/utils/validation.py only for the original URL while...

CVE-2026-72846

Lightdash stores the webhook URL supplied with a scheduled delivery and later posts to it from sendWebhook in packages/backend/src/clients/GoogleChat/GoogleChatClient.ts and in packages/backend/src/clients/MicrosoftTeams/MicrosoftTeamsClient.ts. In affected versions both call fetch on the stored...

CVE-2026-72846

Lightdash (open-source BI platform) is affected by a Server-Side Request Forgery (SSRF) vulnerability in its scheduled delivery webhook handling. The sendWebhook function in both the GoogleChat and MicrosoftTeams clients calls fetch directly on user-supplied webhook URLs without applying the exis...

CVE-2026-72846

Lightdash stores the webhook URL supplied with a scheduled delivery and later posts to it from sendWebhook in packages/backend/src/clients/GoogleChat/GoogleChatClient.ts and in packages/backend/src/clients/MicrosoftTeams/MicrosoftTeamsClient.ts. In affected versions both call fetch on the stored...

CVE-2026-72846 Lightdash Scheduled Delivery Webhook URLs Are Not Validated, Allowing Server-Side Request Forgery

Lightdash stores the webhook URL supplied with a scheduled delivery and later posts to it from sendWebhook in packages/backend/src/clients/GoogleChat/GoogleChatClient.ts and in packages/backend/src/clients/MicrosoftTeams/MicrosoftTeamsClient.ts. In affected versions both call fetch on the stored...