CVE-2021-43960: Lorensbergs Connect2 3.13.7647.20190 is affected by an XSS vulnerability

Routine

MEDIUM 4.8DOWNGRADE

CVE-2021-43960 is a medium-severity flaw (CVSS 4.8) affecting connect2. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Lorensbergs Connect2 3.13.7647.20190 is affected by an XSS vulnerability. Exploitation requires administrator privileges and is performed through the Wizard editor of the application. The attack requires an administrator to go into the Wizard editor and enter an XSS payload within the Page title, Page Instructions, Text before, Text after, or Text on side box. Once this has been done, the administrator must click save and finally wait until any u

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-01-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: lorensbergs

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

Am I affected?

Timeline

2022-01-12 19:15 UTCPublished CVE record published
2026-06-17 04:11 UTCUpdated Record last modified

lorensbergs connect2 DOWNGRADE

Affected: 3.13.7647.20190

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.13.7647.20190

1. Check installed version

apt-cache policy connect2 || rpm -q connect2 || connect2 --version

2. No fixed release: DOWNGRADE to a release before 3.13.7647.20190 (Debian / Ubuntu)

apt-cache madison connect2 sudo apt install connect2=<VERSION_BEFORE_3.13.7647.20190> sudo apt-mark hold connect2

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

dnf --showduplicates list connect2 sudo dnf downgrade connect2-<VERSION_BEFORE_3.13.7647.20190> sudo dnf versionlock add connect2

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-2021-43960?

connect2: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-43960 being exploited?

CVE-2021-43960 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-2021-43960 affect?

CVE-2021-43960 affects connect2. Severity is medium (CVSS 4.8). Lorensbergs Connect2 3.13.7647.20190 is affected by an XSS vulnerability. Exploitation requires administrator privileges and is performed through the Wizard editor of the application. The attack requires an administrator to go into the Wiza

How urgent is CVE-2021-43960?

Priority 34/100. Public exploit reference

References

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