CVE-2020-6956: PCS DEXICON 3.4.1 allows XSS via the loginName parameter in login_action.jsp.

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MEDIUM 6.1DOWNGRADE

CVE-2020-6956 is a medium-severity flaw (CVSS 6.1) affecting dexicon enterprise. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PCS DEXICON 3.4.1 allows XSS via the loginName parameter in login_action.jsp.

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	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-05-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: pcs

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

Am I affected?

Timeline

2020-05-19 14:15 UTCPublished CVE record published
2026-06-17 03:24 UTCUpdated Record last modified

pcs dexicon enterprise DOWNGRADE

Affected: 3.4.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.4.1

1. Check installed version

apt-cache policy dexicon-enterprise || rpm -q dexicon-enterprise || dexicon-enterprise --version

2. No fixed release: DOWNGRADE to a release before 3.4.1 (Debian / Ubuntu)

apt-cache madison dexicon-enterprise sudo apt install dexicon-enterprise=<VERSION_BEFORE_3.4.1> sudo apt-mark hold dexicon-enterprise

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

dnf --showduplicates list dexicon-enterprise sudo dnf downgrade dexicon-enterprise-<VERSION_BEFORE_3.4.1> sudo dnf versionlock add dexicon-enterprise

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-2020-6956?

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

Is CVE-2020-6956 being exploited?

CVE-2020-6956 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-2020-6956 affect?

CVE-2020-6956 affects dexicon enterprise. Severity is medium (CVSS 6.1). PCS DEXICON 3.4.1 allows XSS via the loginName parameter in login_action.jsp.

How urgent is CVE-2020-6956?

Priority 40/100. Public exploit reference

References

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