Deserialization of untrusted data in Roundcube Webmail
Priority CRITICAL 100Exploited in the wildCWE-502Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-502.
Summary
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.
Why it matters now
Exploitation Active In CISA KEV since 2026-02-20CISA due date 2026-03-13
EPSS 0.99491 99th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed Webmail (Roundcube): 1.5.10, 1.6.11roundcube/roundcubemail (Packagist): 1.5.10, 1.6.11
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Roundcube | Webmail | before 1.5.10; 1.6.0 to before 1.6.11 | 1.5.10, 1.6.11 | Patch available | CNA |
| — | roundcube/roundcubemail (Packagist) | before 1.5.10 | 1.5.10 | Patch available | GHSA-8j8w-wwqc-x596 |
| — | roundcube/roundcubemail (Packagist) | 1.6.0 to before 1.6.11 | 1.6.11 | Patch available | GHSA-8j8w-wwqc-x596 |
- Webmail VendorRoundcube Affected before 1.5.10; 1.6.0 to before 1.6.11 Fixed in 1.5.10, 1.6.11 Patch available CNA
- roundcube/roundcubemail (Packagist) Vendor— Affected before 1.5.10 Fixed in 1.5.10 Patch available GHSA-8j8w-wwqc-x596
- roundcube/roundcubemail (Packagist) Vendor— Affected 1.6.0 to before 1.6.11 Fixed in 1.6.11 Patch available GHSA-8j8w-wwqc-x596
Remediation
- Fix · CNA Webmail (Roundcube) Fixed in 1.5.10, 1.6.11
- Fix · GHSA-8j8w-wwqc-x596 roundcube/roundcubemail (Packagist) Fixed in 1.5.10 Advisory →
- Fix · GHSA-8j8w-wwqc-x596 roundcube/roundcubemail (Packagist) Fixed in 1.6.11 Advisory →
Vendor assessments
Timeline
- 2026-02-20 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2025-49113
- 2026-10-03 Alias added: GHSA-8j8w-wwqc-x596
References
Exploit 2
Patch 3
Advisory 5
Other 5
- https://github.com/roundcube/roundcubemail/pull/9865
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.11
- https://github.com/roundcube/roundcubemail/releases/tag/1.5.10
- https://github.com/roundcube/roundcubemail
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49113
More Roundcube Webmail vulnerabilities
- TI-2021-19778 Roundcube before 1.3.17 and 1.4.x before 1.4.12 is prone to a potential SQL injection via search or search_params. KEVCVSS 3.1CRITICAL 9.8
- TI-2020-10051 rcube_image.php in Roundcube Webmail before 1.4.4 allows attackers to execute arbitrary… KEVCVSS 3.1CRITICAL 9.8
- TI-2024-28025 A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7… KEVCVSS 3.1CRITICAL 9.3
- TI-2017-12250 Roundcube Webmail before 1.1.10, 1.2.x before 1.2.7, and 1.3.x before 1.3.3 allows… KEVCVSS 3.1HIGH 7.8
- TI-2025-41994 Cross-site scripting in Roundcube Webmail KEVCVSS 3.1HIGH 7.2
- TI-2023-05182 Stored XSS vulnerability in Roundcube KEVCVSS 3.1MEDIUM 6.1
Sources
- CVE-2025-49113 · CVE Program
- CVE-2025-49113 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-8j8w-wwqc-x596 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-49113 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences