CVE-2026-23949
Description
A flaw was found in jaraco.context. The jaraco.context.tarball() function is vulnerable to a Zip Slip path traversal when processing malicious tar archives. A remote attacker can exploit this by crafting a specially designed tar file, which, when extracted, allows files to be written outside the intended directory. This could lead to arbitrary file overwrites or information disclosure on the system.
Statement
This vulnerability is rated Important for Red Hat products that utilize jaraco.context versions prior to 6.1.0 and process untrusted tar archives. A path traversal flaw in the jaraco.context.tarball() function allows attackers to extract files outside the intended directory due to improper handling of ../ sequences, including in nested tarballs. This could lead to arbitrary file write.
Mitigation
The vulnerability arises from processing untrusted tar archives. To mitigate the risk, Red Hat recommends avoiding the processing of tar archives from untrusted sources. If processing untrusted archives is unavoidable, ensure that the environment where `jaraco.context.tarball()` is used is isolated and has minimal privileges.
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