CVE-2021-43058: An open redirect vulnerability exists in Replicated Classic versions prior to 2.53.1 that could lead to spoofi

Q: How do I fix CVE-2021-43058?

replicated classic: upgrade to 2.53.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-43058 being exploited?

CVE-2021-43058 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-2021-43058 affect?

CVE-2021-43058 affects replicated classic. Severity is medium (CVSS 6.1). An open redirect vulnerability exists in Replicated Classic versions prior to 2.53.1 that could lead to spoofing. To exploit this vulnerability, an attacker could send a link that has a specially crafted URL and convince the user to click t

Q: How urgent is CVE-2021-43058?

Priority 33/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2021-43058 is a medium-severity flaw (CVSS 6.1) affecting replicated classic. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An open redirect vulnerability exists in Replicated Classic versions prior to 2.53.1 that could lead to spoofing. To exploit this vulnerability, an attacker could send a link that has a specially crafted URL and convince the user to click the link, redirecting the user to an untrusted site.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-601
Published	2021-11-01
Last modified	2026-06-17

Publisher (CNA): Replicated Inc. · Vendor: replicated

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

Am I affected?

Timeline

2021-11-01 22:15 UTCPublished CVE record published
2026-06-17 04:10 UTCUpdated Record last modified

replicated replicated classic UPGRADE

Affected: < 2.53.1

Fixed in: 2.53.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy replicated-classic || rpm -q replicated-classic || replicated-classic --version

2. UPGRADE to 2.53.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade replicated-classic

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade replicated-classic

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-2021-43058?

replicated classic: upgrade to 2.53.1. Exact commands for each OS are on this page.

Is CVE-2021-43058 being exploited?

CVE-2021-43058 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-2021-43058 affect?

CVE-2021-43058 affects replicated classic. Severity is medium (CVSS 6.1). An open redirect vulnerability exists in Replicated Classic versions prior to 2.53.1 that could lead to spoofing. To exploit this vulnerability, an attacker could send a link that has a specially crafted URL and convince the user to click t

How urgent is CVE-2021-43058?

Priority 33/100. No elevated risk signals yet.

Related CVEs

CVE-2020-10590 HIGH 7.5 UPGRADE Replicated Classic 2.x versions have an improperly secured API that exposes sensitive data from the Replicated

References

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