CVE-2023-36464
MEDIUM
MEDIUM
Priority: 0.02
BB Relevance:
36/100
Published: 2023-06-27
Modified: 2026-11-02
First seen: 2026-11-02
Status: active
Attack Surface
Low Complexity
No Auth
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
None
UI:
Required
S:
Unchanged
C:
None
I:
None
A:
High
Description
pypdf is an open source, pure-python PDF library. In affected versions an attacker may craft a PDF which leads to an infinite loop if `__parse_content_stream` is executed. That is, for example, the case if the user extracted text from such a PDF. This issue was introduced in pull request #969 and resolved in pull request #1828. Users are advised to upgrade. Users unable to upgrade may modify the line `while peek not in (b"\r", b"\n")` in `pypdf/generic/_data_structures.py` to `while peek not in (b"\r", b"\n", b"")`.
Weakness Classification (1)
Affected Software (2)
| Vendor | Product | Version |
|---|---|---|
| py-pdf | pypdf | < 3.9.0 |
| pypdf2_project | pypdf2 | ≥ 2.2.0 |
References & Advisories (3)
Patch
Issue Tracking
Patch
Exploit
Patch