SB20260414100 - Excessive Iteration in PyPDF
Published: April 14, 2026
Security Bulletin ID
SB20260414100
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Excessive Iteration (CVE-ID: N/A)
CWE-ID: CWE-834 - Excessive Iteration
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to excessive iteration in cross-reference and object stream processing when parsing a crafted PDF with wrong large /Size or /N values. A remote attacker can supply a specially crafted PDF to cause a denial of service.
Remediation
Install update from vendor's website.