Roundcube Webmail Vulnerable to Authenticated RCE via PHP Object Deserialization
CISA confirms exploitation of this vulnerability in real attacks. Prioritise checking whether your application is affected. CISA KEV · CC0 1.0
Roundcube Webmail before 1.5.10 and 1.6.x before 1.6.11 allows remote code execution by authenticated users because the _from parameter in a URL is not validated in program/actions/settings/upload.php, leading to PHP Object Deserialization.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | roundcube/roundcubemail | < 1.5.10, >= 1.6.0, < 1.6.11 | 1.5.10, 1.6.11 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2025-49113
- https://github.com/roundcube/roundcubemail/pull/9865
- https://github.com/roundcube/roundcubemail/commit/0376f69e958a8fef7f6f09e352c541b4e7729c4d
- https://github.com/roundcube/roundcubemail/commit/7408f31379666124a39f9cb1018f62bc5e2dc695
- https://github.com/roundcube/roundcubemail/commit/c50a07d88ca38f018a0f4a0b008e9a1deb32637e
- https://fearsoff.org/research/roundcube
- https://github.com/roundcube/roundcubemail
- https://github.com/roundcube/roundcubemail/releases/tag/1.5.10
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.11
- https://lists.debian.org/debian-lts-announce/2025/06/msg00008.html
- https://roundcube.net/news/2025/06/01/security-updates-1.6.11-and-1.5.10
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49113
- https://www.vicarius.io/vsociety/posts/cve-2025-49113-roundcube-mitigation-script
- https://www.vicarius.io/vsociety/posts/cve-2025-49113-roundcube-vulnerability-detection
- http://www.openwall.com/lists/oss-security/2025/06/02/3
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H- Weakness (CWE)
CWE-502- Platform
- Composer
- Package
roundcube/roundcubemail- Disclosed
- 02.06.2025
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-8j8w-wwqc-x596 - CC BY 4.0
Vulnerability history: roundcube/roundcubemail
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 10
- First → latest
- 06.2025 04.2026
- Without a fix
- 0
- Exploited in attacks
- 1
Severity breakdown
- Critical 1
- Medium 7
- Low 2
Disclosures per year
- 2025: 1
- 2026: 9
-
Roundcube Webmail Vulnerable to Authenticated RCE via PHP Object Deserialization this entry
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