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CVE-2026-49460
5.1 MEDIUM
- CVSS version (CVSS): 4.0
- Attack Vector (AV): Local (L)
- Attack Complexity (AC): Low (L)
- Attack Requirement (AT): None (N)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Vulnerable System Impact Confidentiality (VC): None (N)
- Vulnerable System Impact Integrity (VI): None (N)
- Vulnerable System Impact Availability (VA): Low (L)
- Subsequent System Impact Confidentiality (SC): None (N)
- Subsequent System Impact Integrity (SI): None (N)
- Subsequent System Impact Availability (SA): None (N)
- Modified Attack Vector (MAV): Local (L)
- Modified Attack Complexity (MAC): Low (L)
- Modified Attack Requirement (MAT): None (N)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): None (N)
- Modified Vulnerable System Impact Confidentiality (MVC): None (N)
- Modified Vulnerable System Impact Integrity (MVI): None (N)
- Modified Vulnerable System Impact Availability (MVA): Low (L)
- Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
- Modified Subsequent System Impact Integrity (MSI): Negligible (N)
- Modified Subsequent System Impact Availability (MSA): Negligible (N)
- Safety (S): Not Defined (X)
- Automatable (AU): Not Defined (X)
- Recovery (R): Not Defined (X)
- Value Density (V): Not Defined (X)
- Vulnerability Response Effort (RE): Not Defined (X)
- Provider Urgency (U): Not Defined (X)
- Confidentiality Req. (CR): Not Defined (X)
- Integrity Req. (IR): Not Defined (X)
- Availability Req. (AR): Not Defined (X)
- Exploit Maturity (E): Not Defined (X)
by @dotlambda Activity log
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- @dotlambda dismissed
pypdf: Inefficient decoding of FlateDecode PNG predictor streams
pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /FlateDecode filter with a PNG predictor. This vulnerability is fixed in 6.12.2.
References
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https://github.com/py-pdf/pypdf/security/advisories/GHSA-5hgr-hg42-57jg x_refsource_CONFIRM
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https://github.com/py-pdf/pypdf/pull/3806 x_refsource_MISC
-
https://github.com/py-pdf/pypdf/releases/tag/6.12.2 x_refsource_MISC
Affected products
pypdf
- ==< 6.12.2
Matching in nixpkgs
pkgs.capypdf
Fully color managed PDF generation library
pkgs.python313Packages.pypdf
Pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files
pkgs.python314Packages.pypdf
Pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files
pkgs.python313Packages.pypdf2
Pure-Python library built as a PDF toolkit
pkgs.python313Packages.pypdf3
Pure-Python library built as a PDF toolkit
pkgs.python314Packages.pypdf2
Pure-Python library built as a PDF toolkit
pkgs.python314Packages.pypdf3
Pure-Python library built as a PDF toolkit
pkgs.python313Packages.pypdfium2
Python bindings to PDFium
Package maintainers
-
@jtojnar Jan Tojnar <jtojnar@gmail.com>
-
@javaes Jan van Esdonk <jan+dev@vanesdonk.de>
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@ambroisie Bruno BELANYI <bruno.nixpkgs@belanyi.fr>
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@booxter Ihar Hrachyshka <ihar.hrachyshka@gmail.com>