steps/utils/modcss.inc in Roundcube Webmail before 0.5.1 does not properly verify that a…
Priority LOW 28CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
steps/utils/modcss.inc in Roundcube Webmail before 0.5.1 does not properly verify that a request is an expected request for an external Cascading Style Sheets (CSS) stylesheet, which allows remote authenticated users to trigger arbitrary outbound TCP connections from the server, and possibly obtain sensitive information, via a crafted request.
Why it matters now
EPSS 0.01763 78th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 22
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:* | up to 0.5 | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.1:*:*:*:*:*:*:* | 0.1 | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.1:alpha:*:*:*:*:*:* | 0.1 alpha | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.1:beta:*:*:*:*:*:* | 0.1 beta | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.1:beta2:*:*:*:*:*:* | 0.1 beta2 | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.1:rc1:*:*:*:*:*:* | 0.1 rc1 | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.1:rc2:*:*:*:*:*:* | 0.1 rc2 | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.1.1:*:*:*:*:*:*:* | 0.1.1 | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.2:*:*:*:*:*:*:* | 0.2 | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.2:alpha:*:*:*:*:*:* | 0.2 alpha | Vulnerable | Roundcube |
- cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:* Versions up to 0.5 Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.1:*:*:*:*:*:*:* Versions 0.1 Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.1:alpha:*:*:*:*:*:* Versions 0.1 alpha Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.1:beta:*:*:*:*:*:* Versions 0.1 beta Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.1:beta2:*:*:*:*:*:* Versions 0.1 beta2 Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.1:rc1:*:*:*:*:*:* Versions 0.1 rc1 Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.1:rc2:*:*:*:*:*:* Versions 0.1 rc2 Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.1.1:*:*:*:*:*:*:* Versions 0.1.1 Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.2:*:*:*:*:*:*:* Versions 0.2 Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.2:alpha:*:*:*:*:*:* Versions 0.2 alpha Vulnerable ·Roundcube
Show 12 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:roundcube:webmail:0.2:beta:*:*:*:*:*:* | 0.2 beta | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.2.1:*:*:*:*:*:*:* | 0.2.1 | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.3:*:*:*:*:*:*:* | 0.3 | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.3:beta:*:*:*:*:*:* | 0.3 beta | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.3:rc1:*:*:*:*:*:* | 0.3 rc1 | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.3.1:*:*:*:*:*:*:* | 0.3.1 | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.4:*:*:*:*:*:*:* | 0.4 | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.4:beta:*:*:*:*:*:* | 0.4 beta | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.4.1:*:*:*:*:*:*:* | 0.4.1 | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.4.2:*:*:*:*:*:*:* | 0.4.2 | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.5:beta:*:*:*:*:*:* | 0.5 beta | Vulnerable | Roundcube |
| cpe:2.3:a:roundcube:webmail:0.5:rc:*:*:*:*:*:* | 0.5 rc | Vulnerable | Roundcube |
- cpe:2.3:a:roundcube:webmail:0.2:beta:*:*:*:*:*:* Versions 0.2 beta Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.2.1:*:*:*:*:*:*:* Versions 0.2.1 Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.3:*:*:*:*:*:*:* Versions 0.3 Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.3:beta:*:*:*:*:*:* Versions 0.3 beta Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.3:rc1:*:*:*:*:*:* Versions 0.3 rc1 Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.3.1:*:*:*:*:*:*:* Versions 0.3.1 Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.4:*:*:*:*:*:*:* Versions 0.4 Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.4:beta:*:*:*:*:*:* Versions 0.4 beta Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.4.1:*:*:*:*:*:*:* Versions 0.4.1 Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.4.2:*:*:*:*:*:*:* Versions 0.4.2 Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.5:beta:*:*:*:*:*:* Versions 0.5 beta Vulnerable ·Roundcube
- cpe:2.3:a:roundcube:webmail:0.5:rc:*:*:*:*:*:* Versions 0.5 rc Vulnerable ·Roundcube
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2011-1492
- 2026-10-03 Alias added: GHSA-r646-w9ph-62w9
References
More Roundcube Webmail vulnerabilities
- TI-2025-31204 Deserialization of untrusted data in Roundcube Webmail KEVCVSS 3.1CRITICAL 9.9
- 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
Sources
- CVE-2011-1492 · CVE Program
- CVE-2011-1492 · NVD
- FIRST EPSS
- GHSA-r646-w9ph-62w9 · GitHub Advisory Database · CC BY 4.0
- CVE-2011-1492 · 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