LuaTeX before 1.17.0 allows execution of arbitrary shell commands when compiling a TeX file obtained from an untrusted source. This occurs because luatex-core.lua lets the original io.popen be accessed. This also affects TeX Live before 2023 r66984 and MiKTeX before 23.5.

HighVendor CVSS 7.8 / 10 1 CVE Published Oct 20, 2026 at 10:16 PM UTC

Summary

Mariner

Release Notes

Oct 20, 2026 at 10:16 PM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Oct 21, 2026 at 6:33 PM UTC
Updated by Microsoft Security Response Center
The vendor changed the advisory after it was first published.
Oct 29, 2026 at 10:10 AM UTC
Added to SecurityAlert
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Details collected from Microsoft Security Response Center.

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