CVE-2021-43735: CmsWing 1.3.7 is affected by a SQLi vulnerability via parameter: behavior rule.

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2021-43735 is a critical-severity flaw (CVSS 9.8) affecting cmswing. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

CmsWing 1.3.7 is affected by a SQLi vulnerability via parameter: behavior rule.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-89
Published	2022-03-23
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

2022-03-23 16:15 UTCPublished CVE record published
2026-06-17 04:11 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-2021-43735?

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

Is CVE-2021-43735 being exploited?

CVE-2021-43735 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-2021-43735 affect?

CVE-2021-43735 affects cmswing. Severity is critical (CVSS 9.8). CmsWing 1.3.7 is affected by a SQLi vulnerability via parameter: behavior rule.

How urgent is CVE-2021-43735?

Priority 62/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2021-43736 CRITICAL 9.8 DOWNGRADE CmsWing CMS 1.3.7 is affected by a Remote Code Execution (RCE) vulnerability via parameter: log rule
CVE-2020-24993 MEDIUM 5.4 DOWNGRADE There is a cross site scripting vulnerability on CmsWing 1.3.7
CVE-2020-24992 MEDIUM 5.4 DOWNGRADE There is a cross site scripting vulnerability on CmsWing 1.3.7
CVE-2020-20296 CRITICAL 9.8 DOWNGRADE An issue was found in CMSWing project version 1.3.8, Because the rechargeAction function does not check the ba
CVE-2020-20295 CRITICAL 9.8 DOWNGRADE An issue was found in CMSWing project version 1.3.8

References

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