Bug 2565928 (CVE-2026-121549) - CVE-2026-121549 nnn: nnn: Arbitrary file overwrite via insecure temporary file creation in plugins
Summary: CVE-2026-121549 nnn: nnn: Arbitrary file overwrite via insecure temporary fil...
Keywords:
Status: NEW
Alias: CVE-2026-121549
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-03 16:28 UTC by OSIDB Bzimport
Modified: 2026-11-05 15:04 UTC (History)
0 users

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-11-03 16:28:05 UTC 
nnn through 5.3 contains an insecure temporary file vulnerability in the pdfread and nuke plugins that allows local attackers to overwrite files by exploiting predictable paths in /tmp. Attackers can pre-create a symlink at the name-derived or PID-derived path so the victim's plugin truncates and overwrites any file the victim can write.
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