CVE-2026-66754

Rouille 0.1.6–3.6.2 has a reachable assertion DoS in Request::remove_prefix. An unauthenticated attacker can crash the server by sending a crafted percent-encoded URL where the decoded path matches a configured prefix but the raw percent-encoded path does not, causing an assert! failure and resul...

Microsoft Kiota: Path traversal in generated plugin manifest static_template.file reference (percent-encoding bypass)

Impact Kiota generates AI plugin manifests from an OpenAPI description. When the description contains an x-ai-capabilities response semantics statictemplate or the adaptive-card extension x-ai-adaptive-card, the file reference is written into the generated manifest's...

GHSA-P5RM-JG5C-8C77 Microsoft Kiota: Path traversal in generated plugin manifest static_template.file reference (percent-encoding bypass)

Impact Kiota generates AI plugin manifests from an OpenAPI description. When the description contains an x-ai-capabilities response semantics statictemplate or the adaptive-card extension x-ai-adaptive-card, the file reference is written into the generated manifest's...

CVE-2026-48760

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0 until 6.4.41, 7.4.13, and 8.0.13, UrlSanitizer::parse rejected raw BiDi formatting characters but not percent-encoded forms and used an ASCII-only whitespace check, allowing sanitized URLs...

CVE-2026-59221

Open WebUI before 0.10.0 is affected by a path traversal guard bypass in sanitize_proxy_path (backend/open_webui/routers/terminals.py). The function decodes proxy paths only eight times, allowing a nine-times percent-encoded ../ traversal to bypass normalization and be decoded by the upstream ter...

CVE-2026-59221

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 before 0.10.0, sanitizeproxypath in backend/openwebui/routers/terminals.py decoded proxy paths only eight times, allowing a nine-times percent-encoded ../ traversal value to pass normalization checks...

PYSEC-2026-2211

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, HTMLRenderer.safeurl does not block percent-encoded javascript URIs, allowing attacker-supplied Markdown links or images to bypass URL protections and execute script in rendered HTML. This issue is fixed in version...

CVE-2026-14181

CVE-2026-14181 affects @fastify/middie versions 9.1.0 through 9.3.2, where the URL normalization step in the standalone engine fails to sanitize malformed percent‑encoded sequences. Inputs such as incomplete escapes or truncated multibyte sequences cause the underlying decoder to throw synchronou...

EUVD-2026-40947

@fastify/middie versions 9.1.0 through 9.3.2 fail to guard the URL normalization step used by the standalone engine when incoming request paths contain malformed percent-encoded sequences. Inputs such as an incomplete percent escape or a truncated multibyte sequence cause the underlying decoder t...

CVE-2026-14181

@fastify/middie versions 9.1.0 through 9.3.2 fail to guard the URL normalization step used by the standalone engine when incoming request paths contain malformed percent-encoded sequences. Inputs such as an incomplete percent escape or a truncated multibyte sequence cause the underlying decoder t...

Duplicate Advisory: Arbitrary File Read via Path Traversal in nltk.data.load() through Percent-Encoded Sequences

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-m42h-3232-vpv3. This link is maintained to preserve external references. Original Description NLTK version 3.9.4 is vulnerable to a path traversal attack due to an incomplete fix for GitHub Issue 3504. The...

PYSEC-2026-597

NLTK version 3.9.4 is vulnerable to a path traversal attack due to an incomplete fix for GitHub Issue 3504. The UNSAFENOPROTOCOLRE regex in nltk/data.py checks for literal ../ sequences but fails to account for percent-encoded traversal sequences such as ..%2f. The url2pathname function decodes...

UBUNTU-CVE-2026-12243

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority...

CVE-2026-12243

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CVE-2026-12243

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CVE-2026-12243

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority...

CVE-2026-12243

The CVE ID is rejected/withdrawn by its CNA and does not represent an active vulnerability entry. No risk assessment is applicable for this record.

PT-2026-53758

Name of the Vulnerable Software and Affected Versions NLTK version 3.9.4 Description A path traversal flaw exists due to improper input validation and an incomplete fix for a previous issue. The UNSAFE NO PROTOCOL RE regex in nltk/data.py blocks literal ../ sequences but fails to detect...

CVE-2026-48020

Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.48, 3.6.19, and 3.7.3, there is a high severity vulnerability in Traefik's StripPrefix middleware that allows an unauthenticated attacker to bypass route-level authentication and authorization. When a public router matches on a...

CVE-2026-48020 Traefik StripPrefix Route-Level Auth Bypass via Path Normalization

Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.48, 3.6.19, and 3.7.3, there is a high severity vulnerability in Traefik's StripPrefix middleware that allows an unauthenticated attacker to bypass route-level authentication and authorization. When a public router matches on a...