CVE-2020-14413: NeDi 1.9C is vulnerable to XSS because of an incorrect implementation of sanitize() in inc/libmisc.php

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MEDIUM 6.1DOWNGRADE

CVE-2020-14413 is a medium-severity flaw (CVSS 6.1) affecting nedi. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

NeDi 1.9C is vulnerable to XSS because of an incorrect implementation of sanitize() in inc/libmisc.php. This function attempts to escape the SCRIPT tag from user-controllable values, but can be easily bypassed, as demonstrated by an onerror attribute of an IMG element as a Devices-Config.php?sta= value.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	3.5% (top 11%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-06-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nedi

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-06-29 17:15 UTCPublished CVE record published
2026-06-17 02:54 UTCUpdated Record last modified

nedi nedi DOWNGRADE

Affected: 1.9c

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.9c

1. Check installed version

apt-cache policy nedi || rpm -q nedi || nedi --version

2. No fixed release: DOWNGRADE to a release before 1.9c (Debian / Ubuntu)

apt-cache madison nedi sudo apt install nedi=<VERSION_BEFORE_1.9c> sudo apt-mark hold nedi

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list nedi sudo dnf downgrade nedi-<VERSION_BEFORE_1.9c> sudo dnf versionlock add nedi

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: NeDi 1.9C - Cross-Site Scripting

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-14413?

nedi: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-14413 being exploited?

CVE-2020-14413 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-14413 affect?

CVE-2020-14413 affects nedi. Severity is medium (CVSS 6.1). NeDi 1.9C is vulnerable to XSS because of an incorrect implementation of sanitize() in inc/libmisc.php. This function attempts to escape the SCRIPT tag from user-controllable values, but can be easily bypassed, as demonstrated by an onerror

How urgent is CVE-2020-14413?

Priority 44/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

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CVE-2021-26752 HIGH 8.8 DOWNGRADE NeDi 1.9C allows an authenticated user to execute operating system commands in the Nodes Traffic function on t
CVE-2021-26751 HIGH 8.8 DOWNGRADE NeDi 1.9C allows an authenticated user to perform a SQL Injection in the Monitoring History function on the en
CVE-2020-15037 MEDIUM 5.4 DOWNGRADE NeDi 1.9C is vulnerable to cross-site scripting (XSS) attack

References

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