Answer in brief
CVE-2026-113795 records a Medium severity (CVSS 6.0) vulnerability in pypdf: Possible large memory usage for streams with multiple filters. The current sources do not mark it as known exploited. The current feed maps py-pdf/pypdf (generic), pypdf (pip), pypdf (pypi). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps py-pdf/pypdf (generic), pypdf (pip), pypdf (pypi). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| py-pdf/pypdfgeneric | <6.20.0 | 6.20.0 |
| pypdfpip | <6.20.0 | 6.20.0 |
| pypdfpypi | >=0 <6.20.0 | 6.20.0 |
Published upstream
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 21, 2026
pypdf is a free and open-source pure-python PDF library. Prior to 6.20.0, accessing a crafted PDF stream with a large number of filters or multiple filters that pass around large amounts of data can cause large memory consumption. This issue is fixed in version 6.20.0.
Quoted source text, attributed separately from HOL analysis.