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CVE-2026-74998

CVE-2026-74998

This page contains facts from public vulnerability sources. Check the original advisory before updating.

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, responses from the CSS (Cascading Style Sheets) proxy were not validated, which may result in information disclosure or XSS (cross-site scripting) via MIME sniffing.

CVSS 7.2 · High · EPSS 0.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • webmail

    Versions
    • ≥ 1.6.0, < 1.6.18: Affected (semver)
    • ≥ 1.7.0, < 1.7.3: Affected (semver)

    Update to 1.6.18; Update to 1.7.3

  • roundcube Debian:12

    Versions
    • 1.6.1+dfsg-1
    • 1.6.2+dfsg-1
    • 1.6.3+dfsg-1
    • 1.6.3+dfsg-1~deb12u1
    • 1.6.3+dfsg-2
    • 1.6.4+dfsg-1
    • 1.6.4+dfsg-1~deb12u1
    • 1.6.5+dfsg-1
    • 1.6.5+dfsg-1+deb12u10
    • 1.6.5+dfsg-1+deb12u2
    • 1.6.5+dfsg-1+deb12u3
    • 1.6.5+dfsg-1+deb12u4
    • 1.6.5+dfsg-1+deb12u5
    • 1.6.5+dfsg-1+deb12u6
    • 1.6.5+dfsg-1+deb12u7
    • 1.6.5+dfsg-1+deb12u8
    • 1.6.5+dfsg-1+deb12u9
    • 1.6.5+dfsg-1~deb12u1
    Affected ranges
    • ECOSYSTEM: < 1.6.5+dfsg-1+deb12u11

    Update to 1.6.5+dfsg-1+deb12u11

  • roundcube Debian:13

    Versions
    • 1.6.11+dfsg-1
    • 1.6.12+dfsg-0+deb13u1
    • 1.6.12+dfsg-1
    • 1.6.13+dfsg-0+deb13u1
    • 1.6.13+dfsg-1
    • 1.6.14+dfsg-1
    • 1.6.15+dfsg-0+deb13u1
    • 1.6.15+dfsg-1
    • 1.6.16+dfsg-0+deb13u1
    • 1.6.16+dfsg-1
    • 1.6.17+dfsg-0+deb13u1
    • 1.6.17+dfsg-1
    Affected ranges
    • ECOSYSTEM: < 1.6.18+dfsg-0+deb13u1

    Update to 1.6.18+dfsg-0+deb13u1

  • roundcube Debian:14

    Versions
    • 1.6.11+dfsg-1
    • 1.6.12+dfsg-1
    • 1.6.13+dfsg-1
    • 1.6.14+dfsg-1
    • 1.6.15+dfsg-1
    • 1.6.16+dfsg-1
    • 1.6.17+dfsg-1
    Affected ranges
    • ECOSYSTEM: < 1.6.18+dfsg-1

    Update to 1.6.18+dfsg-1

  • roundcube Ubuntu:Pro:16.04:LTS

    Versions
    • 1.1.1+dfsg.1-2
    • 1.1.2+dfsg.1-5
    • 1.1.3+dfsg.1-1
    • 1.1.4+dfsg.1-1
    • 1.2~beta+dfsg.1-0ubuntu1
    • 1.2~beta+dfsg.1-0ubuntu1+esm1
    • 1.2~beta+dfsg.1-0ubuntu1+esm2
    • 1.2~beta+dfsg.1-0ubuntu1+esm3
    • 1.2~beta+dfsg.1-0ubuntu1+esm4
    • 1.2~beta+dfsg.1-0ubuntu1+esm5
    • 1.2~beta+dfsg.1-0ubuntu1+esm6
    • 1.2~beta+dfsg.1-0ubuntu1+esm7
    • 1.2~beta+dfsg.1-0ubuntu1+esm8
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • roundcube Ubuntu:Pro:18.04:LTS

    Versions
    • 1.3.0+dfsg.1-1
    • 1.3.1+dfsg.1-1
    • 1.3.3+dfsg.1-1
    • 1.3.3+dfsg.1-2
    • 1.3.6+dfsg.1-1
    • 1.3.6+dfsg.1-1ubuntu0.1~esm1
    • 1.3.6+dfsg.1-1ubuntu0.1~esm2
    • 1.3.6+dfsg.1-1ubuntu0.1~esm3
    • 1.3.6+dfsg.1-1ubuntu0.1~esm4
    • 1.3.6+dfsg.1-1ubuntu0.1~esm5
    • 1.3.6+dfsg.1-1ubuntu0.1~esm6
    • 1.3.6+dfsg.1-1ubuntu0.1~esm7
    • 1.3.6+dfsg.1-1ubuntu0.1~esm8
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • roundcube Ubuntu:Pro:20.04:LTS

    Versions
    • 1.3.8+dfsg.1-2
    • 1.3.10+dfsg.1-1
    • 1.4.1+dfsg.1-2
    • 1.4.2+dfsg.1-1
    • 1.4.2+dfsg.1-2
    • 1.4.3+dfsg.1-1
    • 1.4.3+dfsg.1-1ubuntu0.1~esm1
    • 1.4.3+dfsg.1-1ubuntu0.1~esm2
    • 1.4.3+dfsg.1-1ubuntu0.1~esm3
    • 1.4.3+dfsg.1-1ubuntu0.1~esm4
    • 1.4.3+dfsg.1-1ubuntu0.1~esm5
    • 1.4.3+dfsg.1-1ubuntu0.1~esm6
    • 1.4.3+dfsg.1-1ubuntu0.1~esm7
    • 1.4.3+dfsg.1-1ubuntu0.1~esm8
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • roundcube Ubuntu:Pro:22.04:LTS

    Versions
    • 1.4.11+dfsg.1-4
    • 1.5.0+dfsg.1-2
    • 1.5.0+dfsg.1-2ubuntu0.1~esm1
    • 1.5.0+dfsg.1-2ubuntu0.1~esm2
    • 1.5.0+dfsg.1-2ubuntu0.1~esm3
    • 1.5.0+dfsg.1-2ubuntu0.1~esm4
    • 1.5.0+dfsg.1-2ubuntu0.1~esm5
    • 1.5.0+dfsg.1-2ubuntu0.1~esm6
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • roundcube Ubuntu:Pro:24.04:LTS

    Versions
    • 1.6.2+dfsg-1
    • 1.6.4+dfsg-1
    • 1.6.5+dfsg-1
    • 1.6.6+dfsg-1
    • 1.6.6+dfsg-2
    • 1.6.6+dfsg-2ubuntu0.1
    • 1.6.6+dfsg-2ubuntu0.1+esm1
    • 1.6.6+dfsg-2ubuntu0.1+esm2
    • 1.6.6+dfsg-2ubuntu0.1+esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • roundcube Ubuntu:26.10

    Versions
    • 1.6.11+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • roundcube Ubuntu:Pro:26.04:LTS

    Versions
    • 1.6.11+dfsg-1
    • 1.6.11+dfsg-1ubuntu0.26.04.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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