CVE-2020-24903: Cute Editor for ASP.NET 6.4 is vulnerable to reflected cross-site scripting (XSS) caused by improper validatio

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MEDIUM 6.1DOWNGRADE

CVE-2020-24903 is a medium-severity flaw (CVSS 6.1) affecting cute editor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cute Editor for ASP.NET 6.4 is vulnerable to reflected cross-site scripting (XSS) caused by improper validation of user supplied input. A remote attacker could exploit this vulnerability using a specially crafted URL to execute a script in a victim's Web browser within the security context of the hosting Web site, once the URL is clicked. An attacker could use this vulnerability to steal the victim's cookie-based authentication credentials.

Why this priority

Public exploit reference

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	2.9% (top 13%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-01-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cutesoft

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

Am I affected?

Timeline

2021-01-07 13:15 UTCPublished CVE record published
2026-06-17 03:06 UTCUpdated Record last modified

cutesoft cute editor DOWNGRADE

Affected: 6.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.4

1. Check installed version

apt-cache policy cute-editor || rpm -q cute-editor || cute-editor --version

2. No fixed release: DOWNGRADE to a release before 6.4 (Debian / Ubuntu)

apt-cache madison cute-editor sudo apt install cute-editor=<VERSION_BEFORE_6.4> sudo apt-mark hold cute-editor

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

dnf --showduplicates list cute-editor sudo dnf downgrade cute-editor-<VERSION_BEFORE_6.4> sudo dnf versionlock add cute-editor

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: Cute Editor for ASP.NET 6.4 - 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-2020-24903?

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

Is CVE-2020-24903 being exploited?

CVE-2020-24903 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-2020-24903 affect?

CVE-2020-24903 affects cute editor. Severity is medium (CVSS 6.1). Cute Editor for ASP.NET 6.4 is vulnerable to reflected cross-site scripting (XSS) caused by improper validation of user supplied input. A remote attacker could exploit this vulnerability using a specially crafted URL to execute a script in

How urgent is CVE-2020-24903?

Priority 48/100. Public exploit reference

Software pages

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References

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