CVE-2026-27026
MEDIUM
GHSA-9mvc-8737-8j8h
5.5
CVSS 3.1
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CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Lifecycle Timeline
3
Analysis Generated
Mar 12, 2026 - 22:04 vuln.today
Patch Released
Feb 24, 2026 - 15:13 nvd
Patch available
CVE Published
Feb 20, 2026 - 22:16 nvd
MEDIUM 5.5
Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires a malformed /FlateDecode stream, where the byte-by-byte decompression is used. This vulnerability is fixed in 6.7.1.
Analysis
Pypdf versions up to 6.7.1 is affected by allocation of resources without limits or throttling (CVSS 5.5).
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.
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Priority Score
28
Low
Medium
High
Critical
KEV: 0
EPSS: +0.0
CVSS: +28
POC: 0
Vendor Status
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External POC / Exploit Code
Leaving vuln.today
Destination URL
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