The CVE-2021-36156 fix validates the namespace parameter for path traversal sequences after a single URL decode, by double encoding, an attacker can read files at the Ruler API endpoint /loki/api/v1/rules/{namespace}
Exact source revision recorded 1 Nov 2026 03:06:29 UTC. It does not establish the source's current position. Latest evidence.
euvd · EUVD-2026-23100
PublishedThe CVE-2021-36156 fix validates the namespace parameter for path traversal sequences after a single URL decode, by double encoding, an attacker can read files at the Ruler API endpoint /loki/api/v1/rules/{namespace} Thanks to Prasanth Sundararajan for reporting this vulnerability.
EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.
Original publisher date fields
datePublished: Apr 15, 2026, 7:24:31 PM
dateUpdated: Aug 27, 2026, 5:22:30 PM
1 related source bulletins · separate from aliases
WID-SEC-W-2026-0242: Grafana Loki: Schwachstelle ermöglicht Offenlegung von Informationen
CVE-2026-21726
- Source published
- Apr 15, 2026, 7:24:31 PM (timezone not stated)
- Source modified
- Aug 27, 2026, 5:22:30 PM (timezone not stated)
- Observed here
- 1 Nov 2026 03:06:29 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.
EUVD CVSS 3.1 · 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N