CVE-2021-20096: Cross-site request forgery in OpenOversight 0.6.4 allows a remote attacker to perform sensitive application ac

This month

HIGH 8.1DOWNGRADE

CVE-2021-20096 is a high-severity flaw (CVSS 8.1) affecting openoversight. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site request forgery in OpenOversight 0.6.4 allows a remote attacker to perform sensitive application actions by tricking legitimate users into clicking a crafted link.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-352
Published	2021-05-25
Last modified	2026-06-17

Publisher (CNA): Tenable Network Security, Inc. · Vendor: lucyparsonslabs

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

Am I affected?

Timeline

2021-05-25 12:15 UTCPublished CVE record published
2026-06-17 03:33 UTCUpdated Record last modified

lucyparsonslabs openoversight DOWNGRADE

Affected: 0.6.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.6.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.6.4 (Debian / Ubuntu)

apt-cache madison openoversight sudo apt install openoversight=<VERSION_BEFORE_0.6.4> sudo apt-mark hold openoversight

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

dnf --showduplicates list openoversight sudo dnf downgrade openoversight-<VERSION_BEFORE_0.6.4> sudo dnf versionlock add openoversight

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-2021-20096?

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

Is CVE-2021-20096 being exploited?

CVE-2021-20096 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-2021-20096 affect?

CVE-2021-20096 affects openoversight. Severity is high (CVSS 8.1). Cross-site request forgery in OpenOversight 0.6.4 allows a remote attacker to perform sensitive application actions by tricking legitimate users into clicking a crafted link.

How urgent is CVE-2021-20096?

Priority 46/100. High severity; Public exploit reference

References

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