CVE-2026-27025

pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires parsing the /ToUnicode entry of a font with unusually large values, for example during text...

CVE-2026-27025 pypdf has possible long runtimes/large memory usage for large /ToUnicode streams

pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires parsing the /ToUnicode entry of a font with unusually large values, for example during text...

CVE-2026-27025 pypdf has possible long runtimes/large memory usage for large /ToUnicode streams

pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires parsing the /ToUnicode entry of a font with unusually large values, for example during text...

pypdf 安全漏洞

pypdf is an open-source, free Python library developed by py-pdf. It allows for splitting, merging, cropping, and converting pages within PDF files. Versions of pypdf prior to 6.7.1 contained security vulnerabilities. These vulnerabilities stemmed from /ToUnicode entries in the font parsing, whic...

CVE-2026-27025: Excessive Iteration

pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires parsing the /ToUnicode entry of a font with unusually large values, for example during text...

GHSA-WGVP-VG3V-2XQ3 pypdf has possible long runtimes/large memory usage for large /ToUnicode streams

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires parsing the /ToUnicode entry of a font with unusually large values, for example during text extraction. Patches This has been fixed in pypdf==6.7.1. Workarounds ...

pypdf has possible long runtimes/large memory usage for large /ToUnicode streams

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires parsing the /ToUnicode entry of a font with unusually large values, for example during text extraction. Patches This has been fixed in pypdf==6.7.1. Workarounds ...

PT-2026-20908

Name of the Vulnerable Software and Affected Versions pypdf versions prior to 6.7.1 Description pypdf is a free and open-source pure-python PDF library. An attacker can create a malicious PDF file that causes excessive runtime and memory usage when processed. This occurs when parsing the /ToUnico...

ghostscript:gs_device_pdfwrite_fuzzer: Crash in gs_cmap_ToUnicode_add_pair

Detailed Report: https://oss-fuzz.com/testcase?key=6289911895621632 Project: ghostscript Fuzzing Engine: libFuzzer Fuzz Target: gsdevicepdfwritefuzzer Job Type: libfuzzerasanghostscript Platform Id: linux Crash Type: UNKNOWN WRITE Crash Address: 0x75b6b0276558 Crash State: gscmapToUnicodeaddpair...

Linux Distros Unpatched Vulnerability : CVE-2023-46051

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - TeX Live 944e257 allows a NULL pointer dereference in texk/web2c/pdftexdir/tounicode.c. NOTE: this is disputed because it should be categorized as a usability...

DEBIAN-CVE-2023-46051

TeX Live 944e257 allows a NULL pointer dereference in texk/web2c/pdftexdir/tounicode.c. NOTE: this is disputed because it should be categorized as a usability problem...

Fedora 13 : poppler-0.12.4-6.fc13 (2010-15911)

Thu Oct 7 2010 Marek Kasik - 0.12.4-6 - Add poppler-0.12.4-CVE-2010-3702.patch Properly initialize parser - Add poppler-0.12.4-CVE-2010-3703.patch Properly initialize stack - Add poppler-0.12.4-CVE-2010-3704.patch Fix crash in broken pdf code - 0.12.4-5 - Accept 4-digit values in ToUnicode CMaps...

SuSE9 Security Update : qt3 (YOU Patch Number 11795)

An off-by-one error in the QUtf8Decoder::toUnicode method has been found which may allow a denial of service attack with specially crafted UTF-8 character sequences that trigger a buffer overflow. CVE-2007-4137 %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The text description of this plug...

Heap overflow

Off-by-one error in the QUtf8Decoder::toUnicode function in Trolltech Qt 3 allows context-dependent attackers to cause a denial of service crash via a crafted Unicode string that triggers a heap-based buffer overflow. NOTE: Qt 4 has the same error in the QUtf8Codec::convertToUnicode function, but...

CVE-2007-4137

Off-by-one error in the QUtf8Decoder::toUnicode function in Trolltech Qt 3 allows context-dependent attackers to cause a denial of service crash via a crafted Unicode string that triggers a heap-based buffer overflow. NOTE: Qt 4 has the same error in the QUtf8Codec::convertToUnicode function, but...

CVE-2007-4137: Improper Restriction of Operations within the Bounds of a Memory Buffer

Off-by-one error in the QUtf8Decoder::toUnicode function in Trolltech Qt 3 allows context-dependent attackers to cause a denial of service crash via a crafted Unicode string that triggers a heap-based buffer overflow. NOTE: Qt 4 has the same error in the QUtf8Codec::convertToUnicode function, but...