CVE-2026-115353
published 2026-10-22CVE-2026-115353: Mistune before 3.3.0 contains a path traversal vulnerability in the RST include directive that allows attackers to read arbitrary files by supplying relative…
PriorityP351high8.6CVSS 3.1
AVNACLPRNUINSCCHINAN
EPSS
0.39%
32.8th percentile
Mistune before 3.3.0 contains a path traversal vulnerability in the RST include directive that allows attackers to read arbitrary files by supplying relative or absolute paths. Attackers can submit markdown containing include directives referencing ../ sequences or absolute paths to embed sensitive files like credentials or environment data in rendered HTML.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| lepture | mistune | < 3.3.0 | 3.3.0 |
CVSS provenance
nvdv3.18.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
nvdv4.09.2CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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Bugzilla
CVE-2026-115353 python-mistune: Mistune before 3.3.0 Path Traversal via include Directive [fedora-44]
bugzilla·2026-10-28·CVSS 8.6
CVE-2026-115353 [HIGH] CVE-2026-115353 python-mistune: Mistune before 3.3.0 Path Traversal via include Directive [fedora-44]
CVE-2026-115353 python-mistune: Mistune before 3.3.0 Path Traversal via include Directive [fedora-44]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Mistune before 3.3.0 contains a path traversal vulnerability in the RST include directive that allows attackers to read arbitrary files by supplying relative or absolute paths. Attackers can submit markdown containing include directives referencing ../ sequences or absolute paths to embed sensitive files like credentials or environment data in rendered HTML.
Discussion:
FEDORA-2026-ea39a303cf (python-mistune-3.3.4-1.fc44) has been submitted as an update to Fedora 44
Bugzilla
CVE-2026-115353 python-mistune: Mistune before 3.3.0 Path Traversal via include Directive [fedora-rawhide]
bugzilla·2026-10-28·CVSS 8.6
CVE-2026-115353 [HIGH] CVE-2026-115353 python-mistune: Mistune before 3.3.0 Path Traversal via include Directive [fedora-rawhide]
CVE-2026-115353 python-mistune: Mistune before 3.3.0 Path Traversal via include Directive [fedora-rawhide]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Mistune before 3.3.0 contains a path traversal vulnerability in the RST include directive that allows attackers to read arbitrary files by supplying relative or absolute paths. Attackers can submit markdown containing include directives referencing ../ sequences or absolute paths to embed sensitive files like credentials or environment data in rendered HTML.
Bugzilla
CVE-2026-115353 python-mistune: Mistune before 3.3.0 Path Traversal via include Directive [fedora-43]
bugzilla·2026-10-28·CVSS 8.6
CVE-2026-115353 [HIGH] CVE-2026-115353 python-mistune: Mistune before 3.3.0 Path Traversal via include Directive [fedora-43]
CVE-2026-115353 python-mistune: Mistune before 3.3.0 Path Traversal via include Directive [fedora-43]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Mistune before 3.3.0 contains a path traversal vulnerability in the RST include directive that allows attackers to read arbitrary files by supplying relative or absolute paths. Attackers can submit markdown containing include directives referencing ../ sequences or absolute paths to embed sensitive files like credentials or environment data in rendered HTML.
Discussion:
FEDORA-2026-340793a2f1 (python-mistune-3.3.4-1.fc43) has been submitted as an update to Fedora 43
Bugzilla
CVE-2026-115353 python-mistune: Mistune before 3.3.0 Path Traversal via include Directive [epel-9]
bugzilla·2026-10-28·CVSS 8.6
CVE-2026-115353 [HIGH] CVE-2026-115353 python-mistune: Mistune before 3.3.0 Path Traversal via include Directive [epel-9]
CVE-2026-115353 python-mistune: Mistune before 3.3.0 Path Traversal via include Directive [epel-9]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Mistune before 3.3.0 contains a path traversal vulnerability in the RST include directive that allows attackers to read arbitrary files by supplying relative or absolute paths. Attackers can submit markdown containing include directives referencing ../ sequences or absolute paths to embed sensitive files like credentials or environment data in rendered HTML.
Bugzilla
CVE-2026-115353 python-mistune: Mistune before 3.3.0 Path Traversal via include Directive [epel-10]
bugzilla·2026-10-28·CVSS 8.6
CVE-2026-115353 [HIGH] CVE-2026-115353 python-mistune: Mistune before 3.3.0 Path Traversal via include Directive [epel-10]
CVE-2026-115353 python-mistune: Mistune before 3.3.0 Path Traversal via include Directive [epel-10]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Mistune before 3.3.0 contains a path traversal vulnerability in the RST include directive that allows attackers to read arbitrary files by supplying relative or absolute paths. Attackers can submit markdown containing include directives referencing ../ sequences or absolute paths to embed sensitive files like credentials or environment data in rendered HTML.
Bugzilla
CVE-2026-115353 mistune: Mistune before 3.3.0 Path Traversal via include Directive
bugzilla·2026-10-22·CVSS 8.6
CVE-2026-115353 [HIGH] CVE-2026-115353 mistune: Mistune before 3.3.0 Path Traversal via include Directive
CVE-2026-115353 mistune: Mistune before 3.3.0 Path Traversal via include Directive
Mistune before 3.3.0 contains a path traversal vulnerability in the RST include directive that allows attackers to read arbitrary files by supplying relative or absolute paths. Attackers can submit markdown containing include directives referencing ../ sequences or absolute paths to embed sensitive files like credentials or environment data in rendered HTML.
2026-10-22
Published