CVE•Published 2026-04-22•Modified 2026-04-27•0 articles on news•5 live references•NVD data

CVE-2026-41313Pypdf_project · Pypdf

Vulnerability data via NVD (ingested)

CVSS v3.1

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS percentile

Exploit Prediction Scoring System · top 97% of all CVEs

Weaknesses (CWE)

CWE-834Excessive Iteration

Description

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.

Timeline

Published 2026-04-22

Modified 2026-04-27

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-41313

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Pypdf Project Pypdf"

All exposed Pypdf Project Pypdf instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Pypdf"

HTTP body or banner mentions "Pypdf" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-41313