CVE-2020-23576: Laborator Neon dashboard v3 is affected by stored Cross Site Scripting (XSS) via the chat tab.

Routine

MEDIUM 5.4DOWNGRADE

CVE-2020-23576 is a medium-severity flaw (CVSS 5.4) affecting neon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Laborator Neon dashboard v3 is affected by stored Cross Site Scripting (XSS) via the chat tab.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.5% (top 54%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-08-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: laborator

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

Am I affected?

Timeline

2020-08-27 16:15 UTCPublished CVE record published
2026-06-17 03:04 UTCUpdated Record last modified

laborator neon DOWNGRADE

Affected: 3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)

apt-cache madison neon sudo apt install neon=<VERSION_BEFORE_3.0> sudo apt-mark hold neon

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

dnf --showduplicates list neon sudo dnf downgrade neon-<VERSION_BEFORE_3.0> sudo dnf versionlock add neon

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.

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-2020-23576?

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

Is CVE-2020-23576 being exploited?

CVE-2020-23576 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-2020-23576 affect?

CVE-2020-23576 affects neon. Severity is medium (CVSS 5.4). Laborator Neon dashboard v3 is affected by stored Cross Site Scripting (XSS) via the chat tab.

How urgent is CVE-2020-23576?

Priority 35/100. Public exploit reference

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References

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