CVE-2021-29622

Q: How do I fix CVE-2021-29622?

Upgrade prometheus to 2.26.1 or later.

Q: Is CVE-2021-29622 being actively exploited?

Not that we know of. CVE-2021-29622 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 19.6% is the estimated probability that it will be exploited in the next 30 days. That is higher than 97% of all scored CVEs.

Q: How severe is CVE-2021-29622?

CVE-2021-29622 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2021-29622 affect?

Published advisories record a fix for prometheus (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

MEDIUMEPSS 97th pctl

6.5

CVSS v3

NVD

Description

Prometheus is an open-source monitoring system and time series database. In 2.23.0, Prometheus changed its default UI to the New ui. To ensure a seamless transition, the URL's prefixed by /new redirect to /. Due to a bug in the code, it is possible for an attacker to craft an URL that can redirect to any other URL, in the /new endpoint. If a user visits a prometheus server with a specially crafted address, they can be redirected to an arbitrary URL. The issue was patched in the 2.26.1 and 2.27.1 releases. In 2.28.0, the /new endpoint will be removed completely. The workaround is to disable access to /new via a reverse proxy in front of Prometheus.

CWE-601Open Redirect

How to fix

Remediation Available

prometheusNVD

Affected:>= 2.23.0, < 2.26.1Fixed in:2.26.1CVE-2021-29622derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Exploit Intelligence

19.56%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

Third-Party Advisory3

Related Vulnerabilities

Other CWE-601 (Open Redirect) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-4123	High	7.6	97%	-	Fix
CVE-2018-11784	Medium	4.3	94%	-	Fix
CVE-2021-22881	Medium	6.1	87%	-	Fix
CVE-2022-45402	Medium	6.1	82%	-	Fix
CVE-2017-1000117	High	8.8	76%	-	Fix
CVE-2019-10098	Medium	6.1	74%	-	Fix

Common questions

How do I fix CVE-2021-29622?

Upgrade prometheus to 2.26.1 or later.

Is CVE-2021-29622 being actively exploited?

Not that we know of. CVE-2021-29622 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 19.6% is the estimated probability that it will be exploited in the next 30 days. That is higher than 97% of all scored CVEs.

How severe is CVE-2021-29622?

CVE-2021-29622 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2021-29622 affect?

Published advisories record a fix for prometheus (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2021-29622

Markdown

[![CVE-2021-29622](https://tridentstack.com/cve/badge/CVE-2021-29622.svg)](https://tridentstack.com/cve/CVE-2021-29622)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-29622"><img src="https://tridentstack.com/cve/badge/CVE-2021-29622.svg" alt="CVE-2021-29622"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.