What is CVE-2026-49460?

CVE-2026-49460 is a low-severity vulnerability in Py-pdf Pypdf, classified under Inefficient Algorithmic Complexity. CVSS score: 3.3/10. Published 2026-06-22.

How severe is CVE-2026-49460?

Low severity. CVSS v3 base score is 3.3 out of 10.

Vulnerability in Py-pdf Pypdf

CVE-2026-49460

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…

EPSS: 0.001 (1.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

Affected products

Py-pdf Pypdf — versions < 6.12.2
Pypdf_project Pypdf

Weakness classification (CWE)

CWE-407 — Inefficient Algorithmic Complexity

References

security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
security-advisories@github.com (Patch, x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-49460?: CVE-2026-49460 is a low-severity vulnerability in Py-pdf Pypdf, classified under Inefficient Algorithmic Complexity. CVSS score: 3.3/10. Published 2026-06-22.
How severe is CVE-2026-49460?: Low severity. CVSS v3 base score is 3.3 out of 10.