pypdf: Inefficient decoding of FlateDecode PNG predictor streams

낮음 3.3CVE-2026-49460 · GHSA-5hgr-hg42-57jg · PYSEC-2026-3010 · Published 22/06/2026 · updated 25/10/2026

요약

CVE-2026-49460은(는) pypdf, pypdf (pypdf project)에 영향을 주는 낮음 (CVSS 3.3) 취약점입니다.
향후 30일 내 악용 확률(EPSS): 0.17%, 전체 취약점의 5.8%보다 높음.
조치: 6.12.2 이상으로 업데이트하세요.

Package	Affected versions	Patched versions
pypdf PyPI	`< 6.12.2`	`6.12.2`
pypdf pypdf_project	`< 6.12.2`	`6.12.2`

Description

Impact

An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /FlateDecode filter with a PNG predictor.

Patches

This has been fixed in pypdf==6.12.2.

Workarounds

If you cannot upgrade yet, consider applying the changes from PR #3806.

NVD description

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /FlateDecode filter with a PNG predictor. This vulnerability is fixed in 6.12.2.

References

py-pdf/pypdf security advisory · WEB
py-pdf/pypdf#3806 · WEB
py-pdf/pypdf · PACKAGE
py-pdf/pypdf release 6.12.2 · WEB
pypi.org/project/pypdf · PACKAGE
GitHub Advisory GHSA-5hgr-hg42-57jg · ADVISORY
nvd.nist.gov/vuln/detail/CVE-2026-49460 · ADVISORY

pypdf의 다른 취약점

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Package

Affected versions

Patched versions

pypdf

PyPI

< 6.12.2

6.12.2

pypdf

pypdf_project

< 6.12.2

6.12.2

Description

Impact

An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /FlateDecode filter with a PNG predictor.

Patches

This has been fixed in pypdf==6.12.2.

Workarounds

If you cannot upgrade yet, consider applying the changes from PR #3806.

NVD description

pypdf의 다른 취약점

모두 보기 →