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Natural Language Toolkit (NLTK): DNS-rebinding SSRF filter bypass in nltk.pathsec.urlopen (nltk.download / nltk.data.load) defeats ENFORCE mode

🗓️ 31 Jul 2026 16:51:29Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 25 Views

NLTK pathsec SSRF filter bypass via DNS rebinding; validation and connection resolve separately.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
cgr
Chainguard
CVE-2026-12075 vulnerabilities
6 Aug 202620:28
–cgr
cve
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CVE-2026-12075
31 Jul 202616:51
–cve
mend
Mend
CVE-2026-12075
31 Jul 202617:52
–mend
osv_cga
osv_cga
CGA-J6J3-V78W-W483
6 Aug 202609:42
–osv_cga
osv_cga
osv_cga
CGA-JCHG-HQFJ-5WGJ
1 Aug 202613:23
–osv_cga
osv_cga
osv_cga
CGA-R94J-688P-VH9M
5 Aug 202610:28
–osv_cga
osv_cga
osv_cga
CGA-XW9V-7R8P-XQJX
1 Aug 202611:48
–osv_cga
osv_echo
osv_echo
ECHO-C1E1-BB31-3ABE
1 Aug 202600:00
–osv_echo
osv_ghsa
osv_ghsa
GHSA-QVV7-CG9C-W4X3 Natural Language Toolkit (NLTK): DNS-rebinding SSRF filter bypass in nltk.pathsec.urlopen (nltk.download / nltk.data.load) defeats ENFORCE mode
31 Jul 202616:51
–osv_ghsa
osv_mini
osv_mini
MINI-R2XG-4HH8-VWP4
25 Sep 202621:43
–osv_mini
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