Logo
-

Byte Open Security

(ByteOS Network)

Log In

Sign Up

ByteOS

Security
Vulnerability Details
Registries
Custom Views
Weaknesses
Attack Patterns
Filters & Tools
CVE Vulnerability Details :
CVE-2026-28351
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-27 Feb, 2026 | 20:59
Updated At-27 Feb, 2026 | 20:59
Rejected At-
▼CVE Numbering Authority (CNA)
Manipulated RunLengthDecode streams can exhaust RAM

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.

Affected Products
Vendor
py-pdf
Product
pypdf
Versions
Affected
  • < 6.7.4
Problem Types
TypeCWE IDDescription
CWECWE-400CWE-400: Uncontrolled Resource Consumption
Type: CWE
CWE ID: CWE-400
Description: CWE-400: Uncontrolled Resource Consumption
Metrics
VersionBase scoreBase severityVector
4.06.9MEDIUM
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
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
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/py-pdf/pypdf/security/advisories/GHSA-f2v5-7jq9-h8cg
x_refsource_CONFIRM
https://github.com/py-pdf/pypdf/pull/3664
x_refsource_MISC
https://github.com/py-pdf/pypdf/commit/f309c6003746414dc7b5048c19e6d879ff2dc858
x_refsource_MISC
https://github.com/py-pdf/pypdf/releases/tag/6.7.4
x_refsource_MISC
Hyperlink: https://github.com/py-pdf/pypdf/security/advisories/GHSA-f2v5-7jq9-h8cg
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/py-pdf/pypdf/pull/3664
Resource:
x_refsource_MISC
Hyperlink: https://github.com/py-pdf/pypdf/commit/f309c6003746414dc7b5048c19e6d879ff2dc858
Resource:
x_refsource_MISC
Hyperlink: https://github.com/py-pdf/pypdf/releases/tag/6.7.4
Resource:
x_refsource_MISC
Details not found