CVE-2026-121549

MEDIUM
MEDIUM Priority: 0.00 BB Relevance: 23/100
Published: 2026-11-03 Modified: 2026-11-07 First seen: 2026-11-03 Status: active

Attack Surface

Low Complexity Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: Active
S: X
AT: Present
VC: None
VI: High
VA: None

Description

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
jarun nnn 0
jarun nnn 0

Bug Bounty Relevance

23 / 100
✓ Low complexity

CVSS Score

4.1 / 10.0 v4.0
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/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

EPSS — Exploitation Probability

0.11%
Raw Score 0.001090
Percentile 1.3%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00109
2026-11-13
0.00109
2026-11-12
0.00109
2026-11-10
0.00109
2026-11-09
0.00109
2026-11-08
0.00109
2026-11-07
0.00109
2026-11-06
0.00109
2026-11-05
0.00109
2026-11-04
0.00109

Intelligence Sources

mitre ref →
nvd ref →