CVE-2011-1492
Status: ModifiedMedium (5.5)—
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.
CVSS
- Version: 2.0
- Vector: AV:N/AC:L/Au:S/C:P/I:P/A:N
- Base score: 5.5
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 1.76%
- Percentile among all scored CVEs: 77
- Score date: 10/7/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (1)
CWEs
- CWE-20
References
- http://openwall.com/lists/oss-security/2011/03/24/3
- http://openwall.com/lists/oss-security/2011/03/24/4
- http://openwall.com/lists/oss-security/2011/04/04/50
- http://secunia.com/advisories/44050
- http://trac.roundcube.net/changeset/4488
- http://trac.roundcube.net/wiki/Changelog
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66613
- http://openwall.com/lists/oss-security/2011/03/24/3
- http://openwall.com/lists/oss-security/2011/03/24/4
- http://openwall.com/lists/oss-security/2011/04/04/50
- http://secunia.com/advisories/44050
- http://trac.roundcube.net/changeset/4488
- http://trac.roundcube.net/wiki/Changelog
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66613
Raw JSON (NVD)
Show
{
"id": "CVE-2011-1492",
"cveTags": [],
"metrics": {
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"type": "Primary",
"source": "nvd@nist.gov",
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"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N",
"authentication": "SINGLE",
"integrityImpact": "PARTIAL",
"accessComplexity": "LOW",
"availabilityImpact": "NONE",
"confidentialityImpact": "PARTIAL"
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"impactScore": 4.9,
"baseSeverity": "MEDIUM",
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"affected": [
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"published": "2011-04-08T15:17:28.447",
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"vulnStatus": "Modified",
"weaknesses": [
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"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
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"value": "CWE-20"
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],
"descriptions": [
{
"lang": "en",
"value": "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."
},
{
"lang": "es",
"value": "steps/utils/modcss.inc en Roundcube Webmail anterior a v0.5.1 no comprueba correctamente que una solicitud es una solicitud esperada para una hoja de estilo externa (Cascading Style Sheets), permitiendo a usuarios remotos autenticados lanzar conexiones arbitrarias salientes TCP desde el servidor , y posiblemente obtener información sensible, a través de una solicitud manipulada."
}
],
"lastModified": "2026-06-16T23:29:29.260",
"configurations": [
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