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BREW-pdfalyzer-CVE-2026-41313 — pypdf: Possible long runtimes for wrong size values in incremental mode

2026-10-03T13:19:23.740494+00:00

Affected: Homebrew: pdfalyzer

### Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires loading a PDF with a large trailer `/Size` value in incremental mode.

### Patches This has been fixed in [pypdf==6.10.2](https://github.com/py-pdf/pypdf/releases/tag/6.10.2).

### Workarounds If you cannot upgrade yet, consider applying the changes from PR [#3735](https://github.com/py-pdf/pypdf/pull/3735).

CVE-2026-41313 — pypdf: Possible long runtimes for wrong size values in incremental mode

2026-10-03T13:19:23.740553+00:00

Affected: py-pdf pypdf

pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.2 can craft a PDF which leads to long runtimes. This requires loading a PDF with a large trailer `/Size` value in incremental mode. This has been fixed in pypdf 6.10.2. As a workaround, one may apply the changes from the patch manually.

GHSA-4pxv-j86v-mhcw — pypdf: Possible long runtimes for wrong size values in incremental mode

2026-10-03T13:19:23.740585+00:00

Affected: PyPI: pypdf

### Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires loading a PDF with a large trailer `/Size` value in incremental mode.

### Patches This has been fixed in [pypdf==6.10.2](https://github.com/py-pdf/pypdf/releases/tag/6.10.2).

### Workarounds If you cannot upgrade yet, consider applying the changes from PR [#3735](https://github.com/py-pdf/pypdf/pull/3735).