UBUNTU-CVE-2026-59935
A vulnerability in the pypdf library prior to version 6.14.2 allows an attacker to craft a PDF with a page content stream containing a not terminated inline image using ASCII85 or ASCIIHex filters. This causes an infinite loop during parsing, such as when extracting page text. The issue is fixed in version 6.14.2.
AI Analysis
Technical Summary
The pypdf pure-python PDF library versions prior to 6.14.2 contain a vulnerability where a crafted PDF with a page content stream that includes a not terminated inline image using ASCII85 or ASCIIHex filters can cause an infinite loop during parsing operations like text extraction. This denial-of-service condition is resolved in pypdf version 6.14.2.
Potential Impact
An attacker can cause a denial of service by triggering an infinite loop in the PDF parsing process, potentially causing application hangs or resource exhaustion when processing maliciously crafted PDFs.
Mitigation Recommendations
Upgrade pypdf to version 6.14.2 or later, where this infinite loop parsing issue is fixed.
UBUNTU-CVE-2026-59935
Description
A vulnerability in the pypdf library prior to version 6.14.2 allows an attacker to craft a PDF with a page content stream containing a not terminated inline image using ASCII85 or ASCIIHex filters. This causes an infinite loop during parsing, such as when extracting page text. The issue is fixed in version 6.14.2.
CVSS v4.0
Affected software
pkg:deb/ubuntu/[email protected]~esm2?arch=source&distro=esm-apps/xenialpkg:deb/ubuntu/[email protected]~esm2?arch=source&distro=esm-apps/bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=focalpkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=nobleRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The pypdf pure-python PDF library versions prior to 6.14.2 contain a vulnerability where a crafted PDF with a page content stream that includes a not terminated inline image using ASCII85 or ASCIIHex filters can cause an infinite loop during parsing operations like text extraction. This denial-of-service condition is resolved in pypdf version 6.14.2.
Potential Impact
An attacker can cause a denial of service by triggering an infinite loop in the PDF parsing process, potentially causing application hangs or resource exhaustion when processing maliciously crafted PDFs.
Mitigation Recommendations
Upgrade pypdf to version 6.14.2 or later, where this infinite loop parsing issue is fixed.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-59935
- Osv Schema Version
- 1.7.0
- Aliases
- []
- Ecosystems
- ["Ubuntu:Pro:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:25.10","Ubuntu:26.04:LTS"]
- Database Specific Severity
- null
- Cvss Version
- 4.0
Threat ID: 6a58b44f68715ace43d6b6dd
Added to database: 07/16/2026, 10:37:03 UTC
Last enriched: 07/16/2026, 11:29:33 UTC
Last updated: 07/31/2026, 19:24:47 UTC
Views: 6
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.