CVE-2025-66516-Writeup-POC

CVE-2025-66516: Vulnerabilidad crítica de XXE en Apache Tika Resumen Ejecutivo CVE-2025-66516 es una vulnerabilidad crítica de inyección de XML External Entity XXE en Apache Tika con una puntuación CVSS de 10.0 severidad máxima. La vulnerabilidad permite a atacantes remotos leer archivos...

CVE-2025-66516-POC

⚠️ READ DISCLAIMER BEFORE USE ⚠️ Educational/Authorized Testing Only | License | Security Policy About This POC...

CVE-2021-45067

CVE-2021-45067 Este error fue Out of Bounds Read causado por tratar la cadena ANSI como Unicode, lo que puede ser explotado para filtrar información sensible del proceso de Adobe Reader en un entorno aislado. Blog Adobe Reader - XFA - ANSI - Fuga de Información por Confusión Unicode Aviso...

Tika-CVE-2025-66516-Lab

CVE-2025-66516 Entorno de validación minimalista Este proyecto se utiliza para validar CVE-2025-66516 vulnerabilidad de inyección de entidades externas XML en Apache Tika. Resumen de la vulnerabilidad Apache Tika 3.2.1 y versiones anteriores no deshabilitan correctamente la carga de entidades...

Blackash-CVE-2025-66516

🚨 CVE-2025-66516 — Vulnerabilidad Crítica de Apache Tika CVSS: 10.0 | Tipo de Exploit: Inyección XXE | Nivel de Riesgo: MÁXIMO 🎯 Resumen Ejecutivo CVE-2025-66516 es una vulnerabilidad crítica de Entidad Externa XML XXE en el motor central de procesamiento de Apache Tika. Un solo PDF malicioso con...

POC-CVE-2025-54988

CVE-2025-54988 - POC Aviso legal: No soy el descubridor original de esta vulnerabilidad. Esta publicación documenta mi proceso de reproducción del problema en un entorno controlado con fines educativos y para ayudar a otros a validar sus propios sistemas. Las pruebas se realizaron en un laborator...

GHSA-36MM-W85J-3Q2J veraPDF Validation XXE via XFA

Summary Description An XML External Entity Injection CWE-611 vulnerability in veraPDF allows a remote attacker to read arbitrary files on the server file system and perform Server-Side Request Forgery by submitting a crafted PDF containing a malicious XFA stream. This affects all current versions...

CVE-2026-54079 veraPDF Validation XXE via XFA

veraPDF validation provides PDF/A and PDF/UA validation, feature reporting, and metadata repair. From 1.17.35 until 1.30.2 and 1.31.71, veraPDF-validation contains an XML External Entity XXE vulnerability in validation-model/src/main/java/org/verapdf/gf/model/impl/pd/GFPDAcroForm.java in the...

EUVD-2026-50368

veraPDF validation provides PDF/A and PDF/UA validation, feature reporting, and metadata repair. From 1.17.35 until 1.30.2 and 1.31.71, veraPDF-validation contains an XML External Entity XXE vulnerability in validation-model/src/main/java/org/verapdf/gf/model/impl/pd/GFPDAcroForm.java in the...

PYSEC-2026-3027 pypdf: Manipulated FlateDecode XFA streams can exhaust RAM

Impact An attacker who uses this vulnerability can craft a PDF which leads to the RAM being exhausted. This requires accessing the xfa property of a reader or writer and the corresponding stream being compressed using /FlateDecode. Patches This has been fixed in pypdf==6.7.3. Workarounds If...

Security Bulletin: Critical XXE Vulnerability in Apache Tika Affecting Content Collector for Email, File Systems, and Microsoft SharePoint (CVE-2025-66516)

Summary Critical XML External Entity in Apache Tika on all platforms allows an attacker to carry out XML External Entity injection via a crafted XFA file inside of a PDF. An attacker may be able to read sensitive data or trigger malicious requests to internal resources or third-party...

CVE-2025-66769

A NULL pointer dereference in Nitro PDF Pro for Windows v14.41.1.4 allows attackers to cause a Denial of Service DoS via a crafted XFA packet...

CVE-2026-5939

A crafted XFA PDF can trigger a use-after-free condition during calculate event processing, causing the application to crash and resulting in an arbitrary code execution...

CVE-2026-5939

CVE-2026-5939 describes a use-after-free (UAF) vulnerability in Foxit PDF Editor/Reader triggered by a crafted XFA PDF during the calculate event. The issue affects the application when processing XFA calculate logic, potentially crashing the program and enabling arbitrary code execution. The lin...

CVE-2026-5939 UAF in Foxit PDF Editor/Reader via XFA calculate event

A crafted XFA PDF can trigger a use-after-free condition during calculate event processing, causing the application to crash and resulting in an arbitrary code execution...

EUVD-2025-209415

A NULL pointer dereference in Nitro PDF Pro for Windows v14.41.1.4 allows attackers to cause a Denial of Service DoS via a crafted XFA packet...

CVE-2025-66769

A NULL pointer dereference in Nitro PDF Pro for Windows v14.41.1.4 allows attackers to cause a Denial of Service DoS via a crafted XFA packet...

PT-2026-32375

A NULL pointer dereference in Nitro PDF Pro for Windows v14.41.1.4 allows attackers to cause a Denial of Service DoS via a crafted XFA packet...

OPENSUSE-SU-2026:20333-1 Security update for python-PyPDF2

This update for python-PyPDF2 fixes the following issues: Changes in python-PyPDF2: - CVE-2026-27628: Fixed infinite loop when loading circular /Prev entries in cross-reference streams bsc1258940 - CVE-2026-27888: Fixed issue where manipulated FlateDecode XFA streams can exhaust RAM bsc1258934 -...

📄 pypdf Memory Exhaustion / Denial of Service

pypdf versions prior to 6.7.3 were vulnerable to a denial of service condition caused by uncontrolled memory allocation during decompression of XFA streams. An attacker could craft a malicious PDF file containing a highly compressed stream using /FlateDecode...