Bug 2556396 (CVE-2026-113713)

Summary: CVE-2026-113713 virtualenv: virtualenv: Arbitrary code execution via insecure temporary cache symlinks
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: akhatavk, anpicker, anthomas, aos-team-art-private, aprice, asdas, cmyers, dnakabaa, dpaolell, dschmidt, ehelms, gbenhaim, ggainey, hasun, ikhan, jdelft, jdobes, jfula, jlanda, jmitchel, jowilson, jpasqual, jsamir, jupierce, juwatts, jwong, kaycoth, kgaikwad, kshier, lcouzens, lgarciaa, mbiarnes, mdellweg, mhulan, niyer, nmoumoul, nyancey, oezr, omaciel, ometelka, orabin, osousa, pcreech, ppalepu, ppostler, prdhamdh, prwatson, ptisnovs, rbobbitt, rchan, sdawley, sghai, sidsharm, simaishi, smallamp, stcannon, suppawar, syedriko, tmalecek, ttakamiy, twaugh, vlaad, xdharmai, yguenane, zzhou
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in virtualenv. When configured to link application data through environment variables or configuration files, virtualenv can leave newly created environments linked to temporary package files that are deleted after setup completes. Because the virtual environment references an abandoned cache directory path that the user no longer controls, a local attacker could place malicious files in that location. This could allow an attacker to achieve arbitrary code execution or tamper with installed packages when a user runs commands in the affected environment.
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Description OSIDB Bzimport 2026-10-20 19:21:35 UTC 
virtualenv is a tool for creating isolated virtual python environments. From 21.14.8 until 21.14.10, the app-data seeder can leave an environment linked to temporary package files that virtualenv deletes when creation finishes. The environment-variable and configuration-file forms of symlink_app_data can enable this state even though the command-line flag is disabled for temporary app-data. The resulting environment depends on a cache pathname that its owner no longer controls. This issue is fixed in version 21.14.10.