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
- CVSS 3.1 Base Score: 6.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade prometheus | Aug 22, 2024 | May 19, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | May 19, 2021 |
| Freebsd | — | Upgrade prometheus2 | Nov 4, 2022 | Jun 1, 2021 |
| Suse | — | Upgrade mgr-custom-infoUpgrade mgr-cfgUpgrade suseregisterinfoUpgrade python2-rhnlibUpgrade spacecmdUpgrade python3-mgr-osa-commonUpgrade python2-mgr-virtualization-commonUpgrade python3-rhnlibUpgrade python2-mgr-virtualization-hostUpgrade mgr-cfg-actionsUpgrade python3-mgr-osadUpgrade python3-mgr-cfg-clientUpgrade mgr-osadUpgrade spacewalk-checkUpgrade python2-spacewalk-koanUpgrade python2-uyuni-common-libsUpgrade python3-mgr-virtualization-hostUpgrade python2-spacewalk-client-setupUpgrade python2-spacewalk-oscapUpgrade python3-mgr-cfgUpgrade dracut-saltbootUpgrade spacewalk-client-setupUpgrade ansibleUpgrade python2-suseregisterinfoUpgrade python3-spacewalk-client-toolsUpgrade mgr-osa-dispatcherUpgrade python3-suseregisterinfoUpgrade python3-mgr-pushUpgrade spacewalk-oscapUpgrade python3-mgr-cfg-managementUpgrade mgr-pushUpgrade python2-mgr-osadUpgrade python2-mgr-pushUpgrade python2-spacewalk-client-toolsUpgrade python2-mgr-osa-commonUpgrade ansible-testUpgrade ansible-docUpgrade python2-mgr-cfg-managementUpgrade python2-mgr-cfgUpgrade mgr-virtualization-hostUpgrade python3-spacewalk-oscapUpgrade python3-mgr-osa-dispatcherUpgrade golang-github-prometheus-prometheusUpgrade python2-mgr-cfg-clientUpgrade python2-spacewalk-checkUpgrade python3-uyuni-common-libsUpgrade mgr-cfg-clientUpgrade mgr-cfg-managementUpgrade python3-spacewalk-checkUpgrade spacewalk-client-toolsUpgrade python3-mgr-virtualization-commonUpgrade python2-mgr-osa-dispatcherUpgrade python2-mgr-cfg-actionsUpgrade python3-spacewalk-client-setupUpgrade python3-mgr-cfg-actionsUpgrade spacewalk-koanUpgrade python3-spacewalk-koan | Aug 13, 2021 | May 19, 2021 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | May 19, 2021 |
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