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log4js can be exploited to run malicious code
published 3 months ago
Summary
The log4js logging library used in your applications has two security weaknesses that could let an attacker execute unwanted code. TuxCare has released a rebuilt version that fixes the problems, identified as version 4.5.1-tuxcare.1. Update log4js to this version as soon as possible to protect your systems.
What to do
- Update csausdev log4js to version 4.5.1-tuxcare.1.
- Update log4js to version 4.5.1-tuxcare.1.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| TuxCare:npm | csausdev | log4js |
< 4.5.1-tuxcare.1 Fix: upgrade to 4.5.1-tuxcare.1
|
| TuxCare:npm | – | log4js |
< 4.5.1-tuxcare.1 Fix: upgrade to 4.5.1-tuxcare.1
|
Original advisory text
TuxCare security update for log4js (1 CVE)
TuxCare rebuilt log4js to address 1 CVE. Fixed in 4.5.1-tuxcare.1.
Timeline
Published4 Aug 2026
Updated15 Sep 2026
First seen13 Sep 2026
Sources
CLSA-2026-1772583203 · OSV
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