PatchTheCVECVE-2026-113790: pypdf is a free and open-source pure-python PDF library
CVE-2026-113790 is a medium-severity flaw (CVSS 6.0) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF containing arrays or dictionaries with many elements, causing parsing to consume large amounts of memory. This issue is fixed in version 6.21.0.
Why this priority
- No elevated risk signals yet
No fix is published yet: follow the downgrade or mitigation steps.
Last updated 2026-10-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-113790?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-113790 being exploited?
CVE-2026-113790 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-113790 affect?
CVE-2026-113790 affects affected software. Severity is medium (CVSS 6.0). pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF containing arrays or dictionaries with many elements, causing parsing to consume large amounts of memory. This issue is fixed in version 6
How urgent is CVE-2026-113790?
Priority 27/100. No elevated risk signals yet.