CVE-2026-59938

mediumCVSS 5.3covered by 1 sourcefirst seen 2026-07-08

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with declared image size values that are much too large compared to the actual data, causing large memory usage in pypdf image parsing. This issue is fixed in version 6.14.0.

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Exploitation outlook

Low exploitation risk0.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all EPSS-scored CVEs.

Advisory coverage (1)

mediumCVE-2026-59938: pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craf…nvd · 2026-07-08

External references

NVD record for CVE-2026-59938

CVE.org record

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