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PYSEC-2026-3723

🗓️ 22 Aug 2026 15:16:19Reported by Python Packaging AdvisoryType 
pypa
 pypa
🔗 github.com👁 4 Views

SSRF in NLTK before 3.10.0 via DNS failure causing validate_network_url to fail open.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-63311
22 Aug 202614:12
cve
cvelist
Cvelist
CVE-2026-63311 NLTK before 3.10.0 SSRF via DNS Resolution Failure
22 Aug 202614:12
cvelist
debiancve
Debian CVE
CVE-2026-63311
22 Aug 202614:12
debiancve
euvd
EUVD
EUVD-2026-64334
22 Aug 202614:12
euvd
nvd
NVD
CVE-2026-63311
22 Aug 202615:16
nvd
osv
OSV
DEBIAN-CVE-2026-63311
22 Aug 202615:16
osv
osv
OSV
PYSEC-2026-3723
22 Aug 202615:16
osv
osv
OSV
UBUNTU-CVE-2026-63311
25 Aug 202600:00
osv
ptsecurity
Positive Technologies
PT-2026-79562
22 Aug 202600:00
ptsecurity
pypa
PyPA
PYSEC-0000-CVE-2026-63311
22 Aug 202615:16
pypa
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Vulners
Node
pypinltkRange03.10.0

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27 Aug 2026 23:45Current
5.4Medium risk
Vulners AI Score5.4
CVSS 46.9
CVSS 3.15.3
EPSS0.00249
4