CVE-2026-82398: fallo de gravedad media en py-pdf pypdf
pypdf: Inefficient handling of non-whitespace inputs in read_until_whitespace
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 6.9epss 0.5%
pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, an attacker can craft a PDF that causes long runtimes when the pypdf/_utils.py function read_until_whitespace reads a stream containing a long run of bytes without whitespace. The function repeatedly performs immutable bytes concatenation in a one-byte loop, causing quadratic processing cost for the long non-whitespace input. This issue is fixed in version 6.15.0.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Productos afectados
py-pdf · pypdfCVEs relacionadas — py-pdf pypdf
En el mismo producto, de las más peligrosas a las menos.
CVE-2023-36810MEDIUMQuadratic runtime with malformed PDF missing xref marker in pypdfEPSS 0.6%CVE-2026-59936HIGHpypdf: Possible infinite loop for not terminated inline imagesEPSS 0.6%CVE-2026-59935HIGHpypdf: Possible infinite loop for not terminated inline images (ASCII85 and ASCIIHex filter)EPSS 0.6%CVE-2026-59937MEDIUMpypdf: Possible long runtimes for repeated malformed cross-reference entriesEPSS 0.6%CVE-2023-36807MEDIUMInfinite Loop when reading malformed objects in pypdfEPSS 0.6%CVE-2026-59938MEDIUMpypdf: Possible large memory usage for wrong image dimensionsEPSS 0.5%