CVE-2021-36157

MEDIUM
5.3
CVSS Score
Published: August 3, 2021 at 02:03 PM UTC
Updated: June 17, 2026 at 03:58 AM UTC
1 product affected across 1 vendorCortex

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Severity
MEDIUM5.3
Exploit prediction
EPSS 1%

Description

An issue was discovered in Grafana Cortex through 1.9.0. The header value X-Scope-OrgID is used to construct file paths for rules files, and if crafted to conduct directory traversal such as ae ../../sensitive/path/in/deployment pathname, then Cortex will attempt to parse a rules file at that location and include some of the contents in the error message. (Other Cortex API requests can also be sent a malicious OrgID header, e.g., tricking the ingester into writing metrics to a different location, but the effect is nuisance rather than information disclosure.)

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

x_refsource_MISCPatchThird Party Advisory
https://github.com/cortexproject/cortex/pull/4375
x_refsource_MISCRelease NotesVendor Advisory
https://grafana.com/docs/grafana/latest/release-notes/

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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