CVE-2021-44458: Linux users running Lens 5.2.6 and earlier could be compromised by visiting a malicious website

Q: How do I fix CVE-2021-44458?

lens: upgrade to newer than 5.2.6. Exact commands for each OS are on this page.

Q: Is CVE-2021-44458 being exploited?

CVE-2021-44458 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-44458 affect?

CVE-2021-44458 affects lens. Severity is high (CVSS 8.3). Linux users running Lens 5.2.6 and earlier could be compromised by visiting a malicious website. The malicious website could make websocket connections from the victim's browser to Lens and so operate the local terminal feature. This would

Q: How urgent is CVE-2021-44458?

Priority 43/100. High severity; On your watchlist

This month

HIGH 8.3WATCHLISTUPGRADE

CVE-2021-44458 is a high-severity flaw (CVSS 8.3) affecting lens. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Linux users running Lens 5.2.6 and earlier could be compromised by visiting a malicious website. The malicious website could make websocket connections from the victim's browser to Lens and so operate the local terminal feature. This would allow the attacker to execute arbitrary commands as the Lens user.

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.3 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-287, CWE-346
Published	2022-01-10
Last modified	2026-06-17

Publisher (CNA): Mirantis · Vendor: mirantis

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

Am I affected?

Timeline

2022-01-10 16:15 UTCPublished CVE record published
2026-06-17 04:12 UTCUpdated Record last modified

mirantis lens UPGRADE

Affected: <= 5.2.6

Fixed in: newer than 5.2.6

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 5.2.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade lens

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade lens

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2021-44458?

lens: upgrade to newer than 5.2.6. Exact commands for each OS are on this page.

Is CVE-2021-44458 being exploited?

CVE-2021-44458 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-2021-44458 affect?

CVE-2021-44458 affects lens. Severity is high (CVSS 8.3). Linux users running Lens 5.2.6 and earlier could be compromised by visiting a malicious website. The malicious website could make websocket connections from the victim's browser to Lens and so operate the local terminal feature. This would

How urgent is CVE-2021-44458?

Priority 43/100. High severity; On your watchlist

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References

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