rsync 3.1.0 < 3.5.0 Access Control Bypass via DNS Resolution Failure

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Server-side Request Forgery (SSRF)

Overview nltk is a Natural Language Toolkit NLTK is a Python package for natural language processing. Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the validatenetworkurl DNS resolution path in nltk/pathsec.py. An attacker can make urlopen reach restrict...

GHSA-QG9P-XRHJ-435M Duplicate Advisory: nltk: SSRF Fail-Open in validate_network_url() via DNS Resolution Failure

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-3gqm-fcw5-w839. This link is maintained to preserve external references. Original Description NLTK before 3.10.0 affected versions = 3.9.4 contains a server-side request forgery SSRF vulnerability in the...

PYSEC-0000-CVE-2026-63311

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 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...

UBUNTU-CVE-2026-71513

NLTK before 3.10.3 contains a remote code execution vulnerability in AllowlistUnpickler that validates only the pickle module string and not the global name, allowing attackers to resolve dotted names by attribute traversal to callables outside the allowlisted namespace. Attackers can craft...

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 (Python NLP library) versions

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...

EUVD-2026-64173

CKAN MCP Server is a tool for querying CKAN open data portals. A known vulnerability CVE-2026-33060 indicated tools including ckanpackagesearch and sparqlquery that accept a baseurl parameter had the risk of making HTTP requests to arbitrary endpoints without restriction. A fix was applied to...

CVE-2026-53509

@aborruso/ckan-mcp-server (an MCP server for querying CKAN open data portals) is vulnerable to SSRF prior to version 0.4.106 . The validateServerUrl hostname check in src/utils/http.ts only blocked the literal string localhost, but hostname aliases such as ip6-localhost and ip6-loopback (defined ...

CVE-2026-68508

Hydra is a framework for elegantly configuring complex applications. Prior to 1.3.4, hydra.utils.instantiate resolves and calls Python objects selected by configuration through resolvetarget in hydra/internal/instantiate/instantiate2.py, allowing attacker-controlled target values and arguments to...

CVE-2026-68508

Hydra (Python configuration framework) prior to 1.3.4 is vulnerable to arbitrary code execution via hydra.utils.instantiate(). The function resolves and calls Python objects selected by configuration through _resolve_target(), allowing attacker-controlled target values and arguments to invoke dan...

CVE-2026-68508 Hydra: hydra.utils.instantiate with untrusted config can lead to code execution

Hydra is a framework for elegantly configuring complex applications. Prior to 1.3.4, hydra.utils.instantiate resolves and calls Python objects selected by configuration through resolvetarget in hydra/internal/instantiate/instantiate2.py, allowing attacker-controlled target values and arguments to...

EUVD-2026-64130

Hydra is a framework for elegantly configuring complex applications. Prior to 1.3.4, hydra.utils.instantiate resolves and calls Python objects selected by configuration through resolvetarget in hydra/internal/instantiate/instantiate2.py, allowing attacker-controlled target values and arguments to...

CVE-2026-68508 Hydra: hydra.utils.instantiate with untrusted config can lead to code execution

Hydra is a framework for elegantly configuring complex applications. Prior to 1.3.4, hydra.utils.instantiate resolves and calls Python objects selected by configuration through resolvetarget in hydra/internal/instantiate/instantiate2.py, allowing attacker-controlled target values and arguments to...

CVE-2026-68508 Hydra: hydra.utils.instantiate with untrusted config can lead to code execution

Hydra is a framework for elegantly configuring complex applications. Prior to 1.3.4, hydra.utils.instantiate resolves and calls Python objects selected by configuration through resolvetarget in hydra/internal/instantiate/instantiate2.py, allowing attacker-controlled target values and arguments to...

CVE-2026-70452

A flaw was found in rsync. This vulnerability allows a remote attacker to bypass hostname-based access control rules. By inducing DNS resolution failures, the rsync daemon incorrectly skips deny rules, granting unauthorized access to restricted module file trees. Mitigation To mitigate this issue...

CVE-2026-77776

Headroom LLM proxy (v0.29.0 and earlier) trusts the client-supplied x-headroom-user-id header as an authenticated identity without binding it to the caller. The header is read directly in headroom/proxy/handlers/openai.py across chat completion and websocket paths, allowing any client to imperson...

CVE-2026-77751

CVE-2026-77751 is a path traversal vulnerability in the misp-stix library, affecting MISP object template name handling during STIX 2 import and MISP-to-STIX 2 export . Object names from untrusted content were not sufficiently validated before being used to construct a filesystem path for loading...