CVE-2020-24993: There is a cross site scripting vulnerability on CmsWing 1.3.7

Routine

MEDIUM 5.4DOWNGRADE

CVE-2020-24993 is a medium-severity flaw (CVSS 5.4) affecting cmswing. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

There is a cross site scripting vulnerability on CmsWing 1.3.7. This vulnerability (stored XSS) is triggered when visitors access the article module.

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 57%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-05-17
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cmswing

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

Am I affected?

Timeline

2021-05-17 19:15 UTCPublished CVE record published
2026-06-17 03:06 UTCUpdated Record last modified

cmswing cmswing DOWNGRADE

Affected: 1.3.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3.7

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.3.7 (Debian / Ubuntu)

apt-cache madison cmswing sudo apt install cmswing=<VERSION_BEFORE_1.3.7> sudo apt-mark hold cmswing

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

dnf --showduplicates list cmswing sudo dnf downgrade cmswing-<VERSION_BEFORE_1.3.7> sudo dnf versionlock add cmswing

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-2020-24993?

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

Is CVE-2020-24993 being exploited?

CVE-2020-24993 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-2020-24993 affect?

CVE-2020-24993 affects cmswing. Severity is medium (CVSS 5.4). There is a cross site scripting vulnerability on CmsWing 1.3.7. This vulnerability (stored XSS) is triggered when visitors access the article module.

How urgent is CVE-2020-24993?

Priority 35/100. Public exploit reference

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References

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