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The vulnerability of the PyPDF2 library for processing PDF files, which stems from the use of a regular expression with inefficient computational complexity, allows attackers to trigger service failures.
🗓️ 25 May 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 1 Views
| Reporter | Title | Published | Views | Family All 26 |
|---|---|---|---|---|
 | Security Bulletin: IBM Watson Discovery Cartridge affected by vulnerabilities in pypdf-6.5.0-py3-none-any.whl | 7 May 202619:10 | – | ibm |
 | CVE-2026-22691 vulnerabilities | 12 Jan 202619:17 | – | cgr |
 | CVE-2026-22691 | 24 Jan 202621:26 | – | circl |
 | pypdf 安全漏洞 | 10 Jan 202600:00 | – | cnnvd |
 | CVE-2026-22691 | 10 Jan 202604:46 | – | cve |
 | CVE-2026-22691 pypdf has possible long runtimes for malformed startxref | 10 Jan 202604:46 | – | cvelist |
 | CVE-2026-22691 | 10 Jan 202604:46 | – | debiancve |
 | EUVD-2026-1877 | 10 Jan 202604:46 | – | euvd |
 | pypdf has possible long runtimes for malformed startxref | 9 Jan 202619:48 | – | github |
 | CVE-2026-22691 | 10 Jan 202605:16 | – | nvd |
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25 May 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 25
CVSS 35.3
EPSS0.00391