CVE-2026-63445: Github.com/perses/perses Path Traversal Vulnerability

HIGH
Advisory Identifier: GHSA-vr5f-w35q-98jp
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CWE-22
Published
Advisory Summary

CVE-2026-63445 is a HIGH path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Github.com/perses/perses libraries in the Go ecosystem. The issue involves perses's unvalidated project parameter enables filesystem path traversal. Remediation is available by upgrading affected packages to version 0.54.0-rc.0.

CVE-2026-63445 at a Glance

CVE Identifier CVE-2026-63445
GHSA Identifier GHSA-vr5f-w35q-98jp
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Github.com/perses/perses
Package Ecosystem Go
Published Date
Last Updated

How to Fix CVE-2026-63445

To remediate this vulnerability, upgrade all affected Github.com/perses/perses dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/perses/perses fixed: 0.54.0-rc.0 
Upgrade github.com/perses/perses to 0.54.0-rc.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/perses/perses

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-63445, inspect your project dependencies for Github.com/perses/perses:

inspect dependencies for github.com/perses/perses

Analyze the terminal output to locate any version of Github.com/perses/perses in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.54.0-rc.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Github.com/perses/perses, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact When Perses is using the file system database, on the list endpoints, the project value is bound from the request into the resource `Query` struct and is never validated against directory-traversal characters (validation/Flatten only runs for Create/Update bodies, not list queries). The path is then used to retrieve files in the database directly. Attacker can read arbitrary YAML/JSON files from the server host and can bypass the security constraints to get access to other resources contained in the file database. For example `https://localhost:8080/api/v1/dashboards?project=../projects` returns the list of the project while it must not return anything. ### Patches _Has the problem been patched? What versions should users upgrade to?_ ### Workarounds Avoid using the file system database in production. Use SQL database instead.

CVE-2026-63445 Affected Github.com/perses/perses Versions

1 component(s)
Fixed Versions:
0.54.0-rc.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/perses/perses
golang/github.com/perses/perses
Go
< 0.54.0-rc.0
0.54.0-rc.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/perses/perses/security/advisories/GHSA-vr5f-w35q-98jp
Security Fix Commit FIX COMMIT
https://github.com/perses/perses/commit/75e5471040ccb5674ea8d25c2aa16c80ccb70b2a
Github.com/perses/perses Source Repository REPOSITORY
https://github.com/perses/perses
Github.com/perses/perses Release RELEASE
https://github.com/perses/perses/releases/tag/v0.54.0-rc.0

Frequently Asked Questions

What is CVE-2026-63445?
CVE-2026-63445 is a security vulnerability in Github.com/perses/perses involving Perses's unvalidated project parameter enables filesystem path traversal under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Github.com/perses/perses versions are affected?
Affected versions include releases prior to 0.54.0-rc.0 across affected packages: github.com/perses/perses.
What version fixes CVE-2026-63445?
Upgrading to 0.54.0-rc.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/perses/perses affected?
Yes, github.com/perses/perses is affected in releases prior to 0.54.0-rc.0. Upgrade your dependency to 0.54.0-rc.0 or later.
What CWE is associated with CVE-2026-63445?
CVE-2026-63445 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check Go dependencies for CVE-2026-63445?
Run the dependency tree command: 'inspect dependencies for github.com/perses/perses'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-vr5f-w35q-98jp",
  "modified" : "2026-09-18T17:40:03Z",
  "published" : "2026-09-18T17:40:03Z",
  "aliases" : [ "CVE-2026-63445" ],
  "summary" : "Perses's unvalidated project parameter enables filesystem path traversal",
  "details" : "### Impact\nWhen Perses is using the file system database, on  the list endpoints, the project value is bound from the request into the resource `Query` struct and is never validated against directory-traversal characters (validation/Flatten only runs for Create/Update bodies, not list queries). \n\nThe path is then used to retrieve files in the database directly.\n\nAttacker can read arbitrary YAML/JSON files from the server host and can bypass the security constraints to get access to other resources contained in the file database.\n\nFor example `https://localhost:8080/api/v1/dashboards?project=../projects` returns the list of the project while it must not return anything.\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\n### Workarounds\nAvoid using the file system database in production. Use SQL database instead.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/perses/perses"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.54.0-rc.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/perses/perses/security/advisories/GHSA-vr5f-w35q-98jp"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/perses/perses/commit/75e5471040ccb5674ea8d25c2aa16c80ccb70b2a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/perses/perses"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/perses/perses/releases/tag/v0.54.0-rc.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-18T17:40:03Z",
    "nvd_published_at" : null
  }
}