CVE-2026-119207
pypdf is a free and open-source pure-python PDF library
- Risk score
- 58/100
- CVSS
- 7.1 v4.0
- Published
- 29 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive memory when strict mode loads a crafted invalid PDF dictionary. Nested parsing failures add repeated exception text to newly raised errors, allowing a small malformed dictionary to amplify into very large error messag…
- Affected
- See advisory
- Fix
- Upgrade the product to 6.21.3 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.1 high
- Remotely exploitable without logging in
- On your watchlist: python
References
Original description
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive memory when strict mode loads a crafted invalid PDF dictionary. Nested parsing failures add repeated exception text to newly raised errors, allowing a small malformed dictionary to amplify into very large error messages. This issue is fixed in version 6.21.3.
Last activity 29 Oct 2026. Patch Forecast updates every hour.