CVE-2026-114731 (GCVE-0-2026-114731)

Vulnerability from cvelistv5 – Published: 2026-10-22 02:12 – Updated: 2026-10-22 02:12
VLAI
Summary
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an uncontrolled resource consumption vulnerability in the CSS proxy (the utils/modcss action). The fetched stylesheet was read into memory in full, with no size limit and no read timeout, so a stylesheet URL referencing an attacker-controlled host could be used to exhaust server memory. Upstream fixed this in the commit “Add a size limit to the CSS proxy content processing”, which caps the response at 5 MB, reads it as a stream and applies a read timeout.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2362 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Roundcube Webmail Affected: 1.6.0 , < 1.6.20 (semver)
Affected: 1.7.0 , < 1.7.5 (semver)
    cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
    cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
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