# CVE-2026-64826: rConfig < 8.2.13 Path Traversal File Read via FileDownloadController

Status: published. Published: 2026-08-12. Updated: 2026-11-09.

rConfig before 8.2.13 contains a path traversal vulnerability that allows authenticated attackers to read arbitrary files by supplying unsanitized directory traversal sequences in the filename GET parameter of the download_export() method. Attackers can craft requests with ../ sequences to escape the exports base directory and access sensitive files readable by the web server process, including application environment files containing encryption keys, database credentials, and mail configuration.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/rconfig/rconfig/pull/349
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/rconfig/rconfig/commit/d133a466a2df9d065177de9a8ed50f1bfe438aee

## Affected products and versions

- rConfig / rConfig (rconfig/rconfig): ≥ 0; < 8.2.13 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 7.1 (high); 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; source: CNA: VulnCheck

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: 0.48% as of 2026-11-09; percentile 41.64%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-22

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/rconfig/rconfig/releases/tag/core-8.2.13 (CNA: VulnCheck; release-notes)

- https://github.com/rconfig/rconfig/pull/349 (CNA: VulnCheck; issue-tracking, patch)

- https://github.com/rconfig/rconfig/commit/d133a466a2df9d065177de9a8ed50f1bfe438aee (CNA: VulnCheck; patch)

- https://www.vulncheck.com/advisories/rconfig-path-traversal-file-read-via-filedownloadcontroller (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-64826; retrieved 2026-11-09; source updated 2026-11-09

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-64826; retrieved 2026-11-09; source updated Not reported

Revision: 2e5700105e7275a8909afceced98ee0c86aef978e96eb7f5bea568a899697218

Canonical: https://y2.dev/cve/CVE-2026-64826

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