CVE-2026-24688 pypdf has possible Infinite Loop when processing outlines/bookmarks

pypdf is a free and open-source pure-python PDF library. An attacker who uses an infinite loop vulnerability that is present in versions prior to 6.6.2 can craft a PDF which leads to an infinite loop. This requires accessing the outlines/bookmarks. This has been fixed in pypdf 6.6.2. If projects...

CVE-2026-24688 pypdf has possible Infinite Loop when processing outlines/bookmarks

pypdf is a free and open-source pure-python PDF library. An attacker who uses an infinite loop vulnerability that is present in versions prior to 6.6.2 can craft a PDF which leads to an infinite loop. This requires accessing the outlines/bookmarks. This has been fixed in pypdf 6.6.2. If projects...

Exploit for CVE-2026-24688

CVE-2026-24688 - pypdf - Circular Reference DoS Vulnerability...

pypdf security vulnerability

pypdf is an open-source, free Python library developed by py-pdf. It allows for splitting, merging, cropping, and converting pages within PDF files. Prior to version 6.6.2, pypdf had a security vulnerability due to an infinite loop, which could lead to resource consumption when processing special...

CVE-2026-24688: Loop with Unreachable Exit Condition

pypdf is a free and open-source pure-python PDF library. An attacker who uses an infinite loop vulnerability that is present in versions prior to 6.6.2 can craft a PDF which leads to an infinite loop. This requires accessing the outlines/bookmarks. This has been fixed in pypdf 6.6.2. If projects...

PT-2026-28925

Уязвимость библиотеки Python для работы с PDF файлами PyPDF связана с выполнением цикла с недоступным условием выхода. Эксплуатация уязвимости может позволить нарушителю вызвать отказ в обслуживании...

Linux Distros Unpatched Vulnerability : CVE-2026-24688

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - pypdf is a free and open-source pure-python PDF library. An attacker who uses an infinite loop vulnerability that is present in versions prior to 6.6.2 can craf...

cewler (1.2.0.post1), python-xdoc (>=0.1.0, <=0.1.1) potentially affected by CVE-2026-24688 via pypdf (4.0.1)

pypdf PYPI version 4.0.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - cewler 1.2.0.post1 - python-xdoc =0.1.0, =0.1.1 Source cves: CVE-2026-24688 Source advisory: OSV:GHSA-2Q4J-M29V-HQ73...

GHSA-2Q4J-M29V-HQ73 pypdf has possible Infinite Loop when processing outlines/bookmarks

Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires accessing the outlines/bookmarks. Patches This has been fixed in pypdf 6.6.2. Workarounds If projects cannot upgrade yet, consider applying the changes from PR 3610...

agentc-llamaindex (0.2.5a2), agentia (>=0.0.2, <=0.0.10) +243 more potentially affected by CVE-2026-24688 via pypdf (5.9.0)

pypdf PYPI version 5.9.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - agentc-llamaindex 0.2.5a2 - agentia =0.0.2, =0.0.1, =0.1.4, =0.1.0a0.dev0, =0.2.0a0, =1.1.0a20250429, =3.1.8, =1.0.5, =1.0.0, =0.1.0, =1.1.1, =1.4.2,...

sereto (0.2.1), ten8t (>=0.0.14, <=0.0.21) potentially affected by CVE-2026-24688 via pypdf (5.3.1)

pypdf PYPI version 5.3.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - sereto 0.2.1 - ten8t =0.0.14, =0.0.21 Source cves: CVE-2026-24688 Source advisory: OSV:GHSA-2Q4J-M29V-HQ73...

Infinite loop

Overview pypdf is an A pure-python PDF library capable of splitting, merging, cropping, and transforming PDF files Affected versions of this package are vulnerable to Infinite loop via the getoutline function. An attacker can cause the application to enter an infinite loop by crafting PDF file wi...

chellow (>=1679494175.0.0, <=1688376223.0.0), pretix (>=4.18.0, <=4.18.2.post1) potentially affected by CVE-2026-24688 via pypdf (3.6.0)

pypdf PYPI version 3.6.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - chellow =1679494175.0.0, =4.18.0, =4.18.2.post1 Source cves: CVE-2026-24688 Source advisory: OSV:GHSA-2Q4J-M29V-HQ73...

athena-starship (>=0.0.3, <=0.0.6), conflare (>=0.1.2, <=0.1.3) +11 more potentially affected by CVE-2026-24688 via pypdf (4.1.0)

pypdf PYPI version 4.1.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - athena-starship =0.0.3, =0.1.2, =2.2.0, =3.3.0, =1.14.0, =0.1.4, =4.6.2, =0.1.0, =0.1.7 Source cves: CVE-2026-24688 Source advisory:...

label-sorter (>=0.2.0, <=0.3.0), sereto (0.3.5) potentially affected by CVE-2026-24688 via pypdf (5.8.0)

pypdf PYPI version 5.8.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - label-sorter =0.2.0, =0.3.0 - sereto 0.3.5 Source cves: CVE-2026-24688 Source advisory: OSV:GHSA-2Q4J-M29V-HQ73...

pymorant (>=1.0.145, <=1.0.156) potentially affected by CVE-2026-24688 via pypdf (3.16.1)

pypdf PYPI version 3.16.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - pymorant =1.0.145, =1.0.156 Source cves: CVE-2026-24688 Source advisory: OSV:GHSA-2Q4J-M29V-HQ73...

automateboringstuff3 (2024.10.1), calibreweb (0.6.24) +6 more potentially affected by CVE-2026-24688 via pypdf (5.0.1)

pypdf PYPI version 5.0.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - automateboringstuff3 2024.10.1 - calibreweb 0.6.24 - forgy =0.1.0, =0.1.0rc1, =0.0.12, =0.0.16 Source cves: CVE-2026-24688 Source advisory:...

fair-llm (>=0.2.0, <=0.6.2), geo-importer (>=0.0.1b1, <=0.0.1b914) +4 more potentially affected by CVE-2026-24688 via pypdf (5.6.0)

pypdf PYPI version 5.6.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - fair-llm =0.2.0, =0.0.1b1, =30.0.5, =30.0.7 - textspitter 0.4.0b0 Source cves: CVE-2026-24688 Source advisory: OSV:GHSA-2Q4J-M29V-HQ73...

krummstab (>=0.2.0, <=1.2.1) potentially affected by CVE-2026-24688 via pypdf (3.1.0)

pypdf PYPI version 3.1.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - krummstab =0.2.0, =1.2.1 Source cves: CVE-2026-24688 Source advisory: OSV:GHSA-2Q4J-M29V-HQ73...

agatta (>=1.0.0, <=1.0.2), agentbuddy (0.1.1.dev33) +102 more potentially affected by CVE-2026-24688 via pypdf (3.17.4)

pypdf PYPI version 3.17.4 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - agatta =1.0.0, =0.0.3, =0.0.1, =1.1.0, =0.0.2, =1.2.0, =0.6.7, =1.2.1, =0.1.3, =0.0.1, =0.8.2 - cadenai 0.1.0 and more Source cves: CVE-2026-24688...