ByteOS Network

NVD Vulnerability Details :

CVE-2026-28351

Received

Source-security-advisories@github.com

Published At-27 Feb, 2026 | 21:16

Updated At-27 Feb, 2026 | 21:16

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.4, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream using the RunLengthDecode filter. This has been fixed in pypdf 6.7.4. As a workaround, consider applying the changes from PR #3664.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	4.0	6.9	MEDIUM	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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

Type: Secondary

Version: 4.0

Base score: 6.9

Base severity: MEDIUM

Vector:

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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

Weaknesses

CWE ID	Type	Source
CWE-400	Primary	security-advisories@github.com

CWE ID: CWE-400

Type: Primary

Source: security-advisories@github.com

References

Hyperlink	Source	Resource
https://github.com/py-pdf/pypdf/commit/f309c6003746414dc7b5048c19e6d879ff2dc858	security-advisories@github.com	N/A
https://github.com/py-pdf/pypdf/pull/3664	security-advisories@github.com	N/A
https://github.com/py-pdf/pypdf/releases/tag/6.7.4	security-advisories@github.com	N/A
https://github.com/py-pdf/pypdf/security/advisories/GHSA-f2v5-7jq9-h8cg	security-advisories@github.com	N/A