CVE-2026-49460 – pypdf: Inefficient decoding of FlateDecode PNG predictor streams

CVE ID :CVE-2026-49460

Published : June 22, 2026, 8:28 p.m. | 1 hour, 15 minutes ago

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.

Severity: 0.0 | NA

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