FPDI: Memory Exhaustion and Endless Loop in FPDI leads to Denial of Service

Impact This is a significant Denial of Service DoS vulnerability. Any application that uses FPDI to process user-supplied PDF files is at risk. An attacker can upload a small, malicious PDF file that will cause the server-side script to crash due to memory exhaustion or a script time-out. Repeate...

PT-2026-42033

Name of the Vulnerable Software and Affected Versions FPDI versions prior to 2.6.7 Description FPDI is a collection of PHP classes used to read pages from existing PDF documents to serve as templates in FPDF. A Denial of Service DoS issue exists where an attacker can upload a small, malicious PDF...

SUSE CVE-2026-42310

Pillow is a Python imaging library. From version 4.2.0 to before version 12.2.0, an attacker can supply a malicious PDF that causes the process to hang indefinitely, consuming 100% CPU and making the application unresponsive. This issue has been patched in version 12.2.0...

CVE-2026-42310

Pillow is a Python imaging library. From version 4.2.0 to before version 12.2.0, an attacker can supply a malicious PDF that causes the process to hang indefinitely, consuming 100% CPU and making the application unresponsive. This issue has been patched in version 12.2.0...

CVE-2026-40980

In Spring AI, a malicious PDF file can be crafted that triggers the allocation of unreasonable amounts of memory when handled by ForkPDFLayoutTextStripper. Affected versions: Spring AI: 1.0.0 - 1.0.5 fixed in 1.0.6, 1.1.0 - 1.1.4 fixed in 1.1.5...

CVE-2026-40980

In Spring AI, a malicious PDF file can be crafted that triggers the allocation of unreasonable amounts of memory when handled by ForkPDFLayoutTextStripper. Affected versions: Spring AI: 1.0.0 - 1.0.5 fixed in 1.0.6, 1.1.0 - 1.1.4 fixed in 1.1.5...

CVE-2026-40980

In Spring AI, a malicious PDF file can be crafted that triggers the allocation of unreasonable amounts of memory when handled by ForkPDFLayoutTextStripper. Affected versions: Spring AI: 1.0.0 - 1.0.5 fixed in 1.0.6, 1.1.0 - 1.1.4 fixed in 1.1.5...

CVE-2026-41312

A flaw was found in pypdf. An attacker can craft a malicious PDF file containing a specially compressed stream. When this file is processed, it can lead to excessive memory consumption RAM exhaustion, resulting in a Denial of Service DoS for the affected system. Mitigation Mitigation for this iss...

Exploit for CVE-2026-34621

CVE-2026-34621 — Windows PoC Prototype Pollution in Adobe A...

Adobe Reader Zero-Day Exploited via Malicious PDFs Since December 2025

Threat actors have been exploiting a previously unknown zero-day vulnerability in Adobe Reader using maliciously crafted PDF documents since at least December 2025. The finding, detailed by EXPMON's Haifei Li, has been described as a highly-sophisticated PDF exploit. The artifact "Invoice540.pdf"...

Foxit Reader List Box Calculate Array Use-After-Free Vulnerability

Talos Vulnerability Report TALOS-2026-2365 Foxit Reader List Box Calculate Array Use-After-Free Vulnerability March 31, 2026 CVE Number CVE-2026-3779 SUMMARY A use-after-free vulnerability exists in the way Foxit Reader handles an Array object. A specially crafted JavaScript code inside a malicio...

CVE-2021-27517

Foxit PDF SDK For Web through 7.5.0 allows XSS. There is arbitrary JavaScript code execution in the browser if a victim uploads a malicious PDF document containing embedded JavaScript code that abuses app.alert in the Acrobat JavaScript API...

CVE-2026-33699

A flaw was found in pypdf. An attacker can craft a malicious PDF file that, when processed by pypdf in non-strict mode, triggers an infinite loop. This vulnerability can lead to a Denial of Service DoS by consuming excessive system resources, making the application unresponsive. Mitigation To...

Denial Of Service

pypdf is vulnerable to Denial of Service. The vulnerability is due to inefficient decoding of array-based streams, where accessing an array-based stream with many entries leads to long runtimes and large memory usage, and attackers can exploit it by crafting a malicious PDF with a large array-bas...

CVE-2023-45207

An issue was discovered in Zimbra Collaboration ZCS 8.8.15, 9.0, and 10.0. An attacker can send a PDF document through mail that contains malicious JavaScript. While previewing this file in webmail in the Chrome browser, the stored XSS payload is executed. This has been mitigated by sanitising th...

CVE-2022-37370

This vulnerability allows remote attackers to disclose sensitive information on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the...

CVE-2021-31472

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.1.37576. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the...

CVE-2022-42399

This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of...

CVE-2022-37388

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.2.2.53575. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the...

CVE-2025-1277

A maliciously crafted PDF file, when parsed through Autodesk applications, can force a Memory Corruption vulnerability. A malicious actor can leverage this vulnerability to execute arbitrary code in the context of the current process...