CVE-2026-33123: Uncontrolled Resource Consumption

pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.1 allow an attacker to craft a malicious PDF which leads to long runtimes and/or large memory usage. Exploitation requires accessing an array-based stream with many entries. This issue has been fixed in version 6.9.1...

chellow (>=1679494175.0.0, <=1688376223.0.0), pretix (>=4.18.0, <=4.18.2.post1) potentially affected by CVE-2026-33123 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-2026-33123 Source advisory: OSV:GHSA-QPXP-75PX-XJCP...

krummstab (>=0.2.0, <=1.2.1) potentially affected by CVE-2026-33123 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-2026-33123 Source advisory: OSV:GHSA-QPXP-75PX-XJCP...

Inefficient Algorithmic Complexity

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 Inefficient Algorithmic Complexity in the decoding process of array-based streams. An attacker can cause excessive resource...

mimir-ai (0.0.3), rara-digitizer (>=1.0.0, <=1.5.8) potentially affected by CVE-2026-33123 via pypdf (5.0.0)

pypdf PYPI version 5.0.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - mimir-ai 0.0.3 - rara-digitizer =1.0.0, =1.5.8 Source cves: CVE-2026-33123 Source advisory: OSV:GHSA-QPXP-75PX-XJCP...

add-staves (>=0.1.1, <=0.2.4), agentix-agent-sdk (0.1.0) +135 more potentially affected by CVE-2026-33123 via pypdf (4.3.1)

pypdf PYPI version 4.3.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - add-staves =0.1.1, =0.0.1, =0.0.1.dev1, =3.0.0, =0.1.0, =1.0.0, =0.3.8.0, =0.3.2, =0.1.6, =1725528079.0.0, =0.1.4, =0.1.9 and more Source cves:...

gai-common (>=0.1.2, <=0.86.0), gai-lib (0.120.0) +4 more potentially affected by CVE-2026-33123 via pypdf (4.3.0)

pypdf PYPI version 4.3.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - gai-common =0.1.2, =1.1.3, =0.3.1, =5.3.8, =0.6.6, =0.7.0 Source cves: CVE-2026-33123 Source advisory: OSV:GHSA-QPXP-75PX-XJCP...

ai-enterprise-agent (>=0.0.4, <=0.0.9), almax-common (>=1.0.5.dev20240601224039, <=1.0.7.dev20240801212517) +25 more potentially affected by CVE-2026-33123 via pypdf (4.2.0)

pypdf PYPI version 4.2.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - ai-enterprise-agent =0.0.4, =1.0.5.dev20240601224039, =2024.7.4, =0.6.22, =0.2.1, =0.2.0, =0.0.5, =0.2.1, =3.3.2, =0.1.0, =0.0.1, =4.7.1, =0.1.0, =0.1...

athena-starship (>=0.0.3, <=0.0.6), conflare (>=0.1.2, <=0.1.3) +11 more potentially affected by CVE-2026-33123 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, =0.0.1, =3.3.0, =1.14.0, =0.1.4, =4.6.2, =0.1.0, =0.1.58 Source cves: CVE-2026-33123 Source advisory:...

chat-with-mlx (>=0.1.0, <=0.1.11), crewai-files (>=1.9.0, <=1.10.1a1) +9 more potentially affected by CVE-2026-33123 via pypdf (4.0.2)

pypdf PYPI version 4.0.2 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - chat-with-mlx =0.1.0, =1.9.0, =3.2.0, =1.2.1, =1.0.9, =0.0.0, =0.1.2, =0.73.0, =0.94.0 Source cves: CVE-2026-33123 Source advisory:...

cewler (1.2.0.post1), python-xdoc (>=0.1.0, <=0.1.1) potentially affected by CVE-2026-33123 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-2026-33123 Source advisory: OSV:GHSA-QPXP-75PX-XJCP...

docat (1.0.0) potentially affected by CVE-2026-33123 via pypdf (4.0.0)

pypdf PYPI version 4.0.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - docat 1.0.0 Source cves: CVE-2026-33123 Source advisory: OSV:GHSA-QPXP-75PX-XJCP...

agatta (>=1.0.0, <=1.0.2), agentbuddy (0.1.1.dev33) +102 more potentially affected by CVE-2026-33123 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-2026-33123...

sereto (0.2.1), ten8t (>=0.0.14, <=0.0.21) potentially affected by CVE-2026-33123 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-2026-33123 Source advisory: OSV:GHSA-QPXP-75PX-XJCP...

centricube-langchain (>=1.2.3, <=1.3.0), centricube-pyautogen (>=0.3.2, <=0.3.3) +5 more potentially affected by CVE-2026-33123 via pypdf (5.6.1)

pypdf PYPI version 5.6.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - centricube-langchain =1.2.3, =0.3.2, =0.3.0, =0.1.0, =0.0.11, =0.0.3, =0.0.5 Source cves: CVE-2026-33123 Source advisory: OSV:GHSA-QPXP-75PX-XJCP...

fair-llm (>=0.2.0, <=0.6.2), geo-importer (>=0.0.1b1, <=0.0.1b914) +4 more potentially affected by CVE-2026-33123 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-2026-33123 Source advisory: OSV:GHSA-QPXP-75PX-XJCP...

docvec-cli (0.1.0), ingenious (>=0.1.0, <=0.1.3) +3 more potentially affected by CVE-2026-33123 via pypdf (5.5.0)

pypdf PYPI version 5.5.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - docvec-cli 0.1.0 - ingenious =0.1.0, =0.1.3b1, =0.2.6, =29.1.3, =30.0.4 Source cves: CVE-2026-33123 Source advisory: OSV:GHSA-QPXP-75PX-XJCP...

calibreweb (0.6.25), cewler (>=1.3.0, <=1.3.1) +8 more potentially affected by CVE-2026-33123 via pypdf (5.4.0)

pypdf PYPI version 5.4.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - calibreweb 0.6.25 - cewler =1.3.0, =1.1.2, =1.1.0, =1.2.0, =2025.3.0, =0.2.2, =28.3.2, =29.1.2 - ten8t 0.0.22 Source cves: CVE-2026-33123 Source...

a-data-processing (0.0.1), ab-data-processing (0.0.1) +9 more potentially affected by CVE-2026-33123 via pypdf (3.17.1)

pypdf PYPI version 3.17.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - a-data-processing 0.0.1 - ab-data-processing 0.0.1 - arac 0.0.1 - crate-anon 0.20.7 - generalagent =0.0.6, =0.0.1, =0.1.0, =0.0.1, =0.0.14 - pyxreade...

genai-4-dps-helper (0.2.31), news-scraper-pdf (1.1.6) +6 more potentially affected by CVE-2026-33123 via pypdf (5.3.0)

pypdf PYPI version 5.3.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - genai-4-dps-helper 0.2.31 - news-scraper-pdf 1.1.6 - polytext =0.1.0, =0.1.0, =0.1.10 - python-pdf-toolkit 0.1.1 - synforge 0.1.0 - ta-using-llms 0.0....