UpHeron
All vulnerabilities

Servers and applications

CVE-2011-1492

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.

Severity
Medium 5.5
Published
8 Apr 2011
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.8% in the next 30 daysHigher than 78% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Improper input validation (CWE-20)
Attack
Over the network · Needs a login
Attacker can
Read some data · Change some data
CVSS vector
AV:N/AC:L/Au:S/C:P/I:P/A:N
Sources
NVD

Affected software

SoftwareAffected versions
RoundcubeServers and applications · cpe:a:roundcube:webmail
  • Version 0.5-rc
  • Version 0.5-beta
  • Version 0.4.2
  • Version 0.4.1
All 22 release lines
  • Every version up to 0.5
  • Version 0.1-alpha
  • Version 0.1-beta
  • Version 0.1-beta2
  • Version 0.1-rc1
  • Version 0.1-rc2
  • Version 0.1
  • Version 0.1.1
  • Version 0.2-alpha
  • Version 0.2-beta
  • Version 0.2
  • Version 0.2.1
  • Version 0.3-beta
  • Version 0.3-rc1
  • Version 0.3
  • Version 0.3.1
  • Version 0.4-beta
  • Version 0.4
  • Version 0.4.1
  • Version 0.4.2
  • Version 0.5-beta
  • Version 0.5-rc

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2011-1492
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2011-1492