Pypdf2 1.27.9 includes a fix for CVE-2023-36810: An attacker who uses this vulnerability can craft a PDF which leads to unexpected long runtime. This quadratic runtime blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage.
https://github.com/py-pdf/pypdf/security/advisories/GHSA-jrm6-h9cq-8gqw

PyPDF2 1.27.5 includes a fix for CVE-2022-24859: In versions prior to 1.27.5 an attacker can craft a PDF which leads to an infinite loop if PyPDF2 code attempts to get the content stream. The reason is that the last while-loop in 'ContentStream._readInlineImage' only terminates when it finds the 'EI' token, but never actually checks if the stream has already ended. Users unable to upgrade should validate PDFs prior to iterating over their content stream.
https://github.com/py-pdf/PyPDF2/security/advisories/GHSA-xcjx-m2pj-8g79

Pypdf2 2.10.6 fixes a potential DoS vulnerability.
https://github.com/py-pdf/pypdf/pull/1331

Pypdf2 1.27.9 includes a fix for CVE-2023-36810: An attacker who uses this vulnerability can craft a PDF which leads to unexpected long runtime. This quadratic runtime blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage.
https://github.com/py-pdf/pypdf/security/advisories/GHSA-jrm6-h9cq-8gqw

PyPDF2 1.27.5 includes a fix for CVE-2022-24859: In versions prior to 1.27.5 an attacker can craft a PDF which leads to an infinite loop if PyPDF2 code attempts to get the content stream. The reason is that the last while-loop in 'ContentStream._readInlineImage' only terminates when it finds the 'EI' token, but never actually checks if the stream has already ended. Users unable to upgrade should validate PDFs prior to iterating over their content stream.
https://github.com/py-pdf/PyPDF2/security/advisories/GHSA-xcjx-m2pj-8g79

Pypdf2 2.10.6 fixes a potential DoS vulnerability.
https://github.com/py-pdf/pypdf/pull/1331

Pypdf2 1.27.9 includes a fix for CVE-2023-36810: An attacker who uses this vulnerability can craft a PDF which leads to unexpected long runtime. This quadratic runtime blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage.
https://github.com/py-pdf/pypdf/security/advisories/GHSA-jrm6-h9cq-8gqw

PyPDF2 1.27.5 includes a fix for CVE-2022-24859: In versions prior to 1.27.5 an attacker can craft a PDF which leads to an infinite loop if PyPDF2 code attempts to get the content stream. The reason is that the last while-loop in 'ContentStream._readInlineImage' only terminates when it finds the 'EI' token, but never actually checks if the stream has already ended. Users unable to upgrade should validate PDFs prior to iterating over their content stream.
https://github.com/py-pdf/PyPDF2/security/advisories/GHSA-xcjx-m2pj-8g79

Pypdf2 2.10.6 fixes a potential DoS vulnerability.
https://github.com/py-pdf/pypdf/pull/1331