CVE-2026-41314
published 2026-04-22CVE-2026-41314: pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.2 can craft a PDF which leads…
PriorityP433medium6.5CVSS 3.1
AVNACLPRNUIRSUCNINAH
EPSS
0.23%
13.3th percentile
pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.2 can craft a PDF which leads to the RAM being exhausted. This requires accessing an image using `/FlateDecode` with large size values. This has been fixed in pypdf 6.10.2. As a workaround, one may apply the changes from the patch manually.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| ansible-automation-platform-25 | lightspeed-chatbot-rhel8 | — | — |
| lightspeed-core | rag-tool-rhel9 | — | — |
| openshift-lightspeed-tech-preview | lightspeed-rag-tool-rhel9 | — | — |
| openshift-lightspeed | lightspeed-ocp-rag-rhel9 | — | — |
| py-pdf | pypdf | < 6.10.2 | 6.10.2 |
| pypdf_project | pypdf | < 6.10.2 | 6.10.2 |
| quay | quay-rhel8 | — | — |
| quay | quay-rhel9 | — | — |
| rhelai3 | bootc-cuda-rhel9 | — | — |
| rhelai3 | bootc-rocm-rhel9 | — | — |
| rhelai3 | disk-image-cuda-rhel9 | — | — |
| rhoai | odh-llama-stack-core-rhel9 | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
nvdv4.04.8MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vendor_redhat4.8MEDIUM
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Red Hat
pypdf: python: pypdf: Denial of Service via crafted PDF with large image sizes
vendor_redhat·2026-04-22·CVSS 4.8
CVE-2026-41314 [MEDIUM] CWE-770 pypdf: python: pypdf: Denial of Service via crafted PDF with large image sizes
pypdf: python: pypdf: Denial of Service via crafted PDF with large image sizes
A flaw was found in pypdf, a pure-Python PDF library. An attacker can exploit this vulnerability by crafting a malicious PDF file that accesses an image using `/FlateDecode` with large size values. This can lead to memory exhaustion, resulting in a Denial of Service (DoS) for the system processing the PDF.
Mitigation: To mitigate this issue, avoid processing untrusted PDF files with applications utilizing the pypdf library. Restricting the sources of PDF files to trusted origins can reduce the risk of exploitation.
Package: lightspeed-core/rag-tool-rhel9 (Lightspeed Core) - Fix deferred
Package: openshift-lightspeed/lightspeed-ocp-rag-rhel9 (OpenShift Lightspeed) - Fix deferred
Package: openshift-lightspeed
VulDB
py-pdf pypdf up to 6.10.1 size memory allocation (GHSA-x284-j5p8-9c5p / Nessus ID 316727)
vuldb·2026-05-26·CVSS 4.8
CVE-2026-41314 [MEDIUM] py-pdf pypdf up to 6.10.1 size memory allocation (GHSA-x284-j5p8-9c5p / Nessus ID 316727)
A vulnerability labeled as problematic has been found in py-pdf pypdf up to 6.10.1. The affected element is an unknown function. Executing a manipulation of the argument size can lead to uncontrolled memory allocation.
This vulnerability appears as CVE-2026-41314. The attack may be performed from remote. There is no available exploit.
The affected component should be upgraded.
GHSA
Ray: Remote Code Execution via Parquet Arrow Extension Type Deserialization
ghsa·2026-04-24
CVE-2026-41486 [HIGH] CWE-502 Ray: Remote Code Execution via Parquet Arrow Extension Type Deserialization
Ray: Remote Code Execution via Parquet Arrow Extension Type Deserialization
Ray Data registers custom Arrow extension types (`ray.data.arrow_tensor`, `ray.data.arrow_tensor_v2`, `ray.data.arrow_variable_shaped_tensor`) globally in PyArrow. When PyArrow reads a Parquet file containing one of these extension types, it calls `__arrow_ext_deserialize__` on the field's metadata bytes. Ray's implementation passes these bytes directly to `cloudpickle.loads()`, achieving arbitrary code execution during schema parsing, before any row data is read.
In May 2024, Ray fixed a related vulnerability in `PyExtensionType`-based extension types ([issue #41314](https://github.com/ray-project/ray/issues/41314), [PR #45084](https://github.com/ray-project/ray/pull/45084)). In July 2025, [PR #54831](https://gi
No detection rules found.
No public exploits indexed.
2026-04-22
Published