CVE-2026-63445

Perses: Unvalidated project parameter enables filesystem path traversal

HIGH
7.1
CVSS Score
Published: September 18, 2026 at 05:38 PM UTC
Updated: September 24, 2026 at 09:37 PM UTC
1 product affected across 1 vendorPerses

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Severity
HIGH7.1
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

Perses is an open-source dashboard and visualization project for observability data. Prior to 0.54.0-rc.0, list endpoints used with the file-system database bind the request-controlled project query parameter into the resource Query structure without validating it against directory traversal characters, and the resulting project value is used to select database paths. An authenticated attacker can supply directory traversal segments to leave the intended project directory, read arbitrary YAML or JSON files accessible to the Perses process, and bypass project isolation to enumerate other file-backed resources. This issue is fixed in version 0.54.0-rc.0.

Affected

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

v < 0.54.0-rc.0
Affected range stops below 0.54.0-rc.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-22

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