# CVE-2017-16651: Roundcube Webmail File Disclosure Vulnerability

Source: https://junglewise.ai/threats/cve-2017-16651-roundcube-webmail-file-disclosure-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-11-03. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2017-16651 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2021-11-03

Roundcube Webmail contains a file disclosure vulnerability due to insufficient input validation in file-based attachment plugins. An authenticated attacker with a valid session can exploit this to gain unauthorized access to arbitrary files on the host's filesystem, including sensitive configuration files.

Technologies: [Roundcube Webmail](https://junglewise.ai/threats/technologies/webmail). Vendors: [Roundcube](https://junglewise.ai/threats/vendors/roundcube).

## Quick answers

**Is CVE-2017-16651 exploited in the wild?** Yes. CVE-2017-16651 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.

**How severe is CVE-2017-16651?** Critical severity, with a CVSS score of 7.8, published 3 November 2021.

**Which products and versions are affected?** Roundcube Webmail before 1.1.10, 1.2.x before 1.2.7, 1.3.x before 1.3.3.

**Is there a fix for CVE-2017-16651?** A patch was published on 2017-11-08: Security updates 1.3.3, 1.2.7, and 1.1.10 released. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2017-16651 attacked?** It is attacked with local access, in a web application.

**Am I affected by CVE-2017-16651?** Check whether you run Roundcube Webmail. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Roundcube Webmail before 1.1.10, 1.2.x before 1.2.7, 1.3.x before 1.3.3

## Timeline

- 2017-11-08: patched: Security updates 1.3.3, 1.2.7, and 1.1.10 released.
- 2017-11-01: exploited: Exploitation in the wild reported to have occurred in November 2017.
- 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog.

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