Home/CVE/pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. An
CVE

CVE-2023-36810

pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. An

pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. An attacker who uses this vulnerability can craft a PDF which leads to unexpected long runtime. This quadratic runtime blocks the current process and can utilize a single core of the CPU by 100%.

It does not affect memory usage. This issue has been addressed in PR 808 and versions from 1.27.9 include this fix. Users are advised to upgrade.

There are no known workarounds for this vulnerability.

MEDIUM · CVSS 6.2 EPSS 0.00165
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-407Inefficient Algorithmic Complexity
▤

Affected Products & Versions

1
pypdf project pypdf<= 1.27.8
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
PyPI pypdf2 MODERATE fixed in 1.27.9
⚠

Public Exploits & PoCs

2
pocgithub.com · issues/582github.com
pocgithub.com · GHSA-jrm6-h9cq-8gqwgithub.com
▣

Scoring & Timeline

6.2
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD30 Jun 2023 · 07:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
usnUSN-6280-1
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/py-pdf/pypdf/pull/808Patch
https://lists.debian.org/debian-lts-announce/2023/07/msg00019.html
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