CVE-2021-29622

MEDIUM
Published May 19, 20215y ago · Modified Jun 17, 20262w ago
6.1 CVSS 3.1
Medium
Find Similar
Published May 19, 2021 5y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
6.1
Exploitability
2.8
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-601

Affected Products 3

VendorProductVersionRange
prometheusprometheus*≥2.23.0  –  <2.26.1
prometheusprometheus2.27.0any
prometheusprometheus2.27.0any

References 3

  • github.com https://github.com/prometheus/prometheus/releases/tag/v2.26.1
    Third Party Advisory
  • github.com https://github.com/prometheus/prometheus/releases/tag/v2.27.1
    Third Party Advisory
  • github.com https://github.com/prometheus/prometheus/security/advisories/GHSA-vx57-7f4q-fpc7
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.