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
Published Apr 8, 2011
5.5
MEDIUMCVSS 2.0
EPSS 1.76%
Description
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.
Affected products
No data.
- ≤ 0.5
- 0.1
- 0.1
- 0.1
- 0.1
- 0.1
- 0.1
- 0.1.1
- 0.2
- 0.2
- 0.2
- 0.2.1
- 0.3
- 0.3
- 0.3
- 0.3.1
- 0.4
- 0.4
- 0.4.1
- 0.4.2
- 0.5
- 0.5
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.76% (0.01763) | 77.22th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.76% (0.01763) | 75.06th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.39% (0.00390) | 57.98th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.21% (0.00207) | 59.56th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.21% (0.00207) | 58.85th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.21% (0.00207) | 56.84th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.23% (0.01232) | 67.28th | v2 (v2022.01.01) |
| Dec 23, 2022 | 1.23% (0.01232) | 66.86th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.23% (0.01232) | 64.85th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.23% (0.01232) | 41.02th | v2 (v2022.01.01) |
References (7)
- http://openwall.com/lists/oss-security/2011/03/24/3 mailing-listx_refsource_MLIST
- http://openwall.com/lists/oss-security/2011/03/24/4 mailing-listx_refsource_MLISTPatch
- http://openwall.com/lists/oss-security/2011/04/04/50 mailing-listx_refsource_MLISTPatch
- http://secunia.com/advisories/44050 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://trac.roundcube.net/changeset/4488 x_refsource_CONFIRMPatch
- http://trac.roundcube.net/wiki/Changelog x_refsource_CONFIRM
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66613 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://openwall.com/lists/oss-security/2011/03/24/3 | mailing-listx_refsource_MLIST | |
| http://openwall.com/lists/oss-security/2011/03/24/4 | mailing-listx_refsource_MLISTPatch | |
| http://openwall.com/lists/oss-security/2011/04/04/50 | mailing-listx_refsource_MLISTPatch | |
| http://secunia.com/advisories/44050 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://trac.roundcube.net/changeset/4488 | x_refsource_CONFIRMPatch | |
| http://trac.roundcube.net/wiki/Changelog | x_refsource_CONFIRM | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/66613 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.