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TI-2026-27655 Aliases CVE-2026-35545GHSA-w846-74jr-76cv

An issue was discovered in Roundcube Webmail before 1.5.15 and 1.6.15.

Priority MEDIUM 42CWE-669Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

An issue was discovered in Roundcube Webmail before 1.5.15 and 1.6.15. The remote image blocking feature can be bypassed via SVG content in an e-mail message. This may lead to information disclosure or access-control bypass. This involves the animate element with attributeName=fill/filter/stroke.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00409 35th percentileScored 2026-11-07
Fix Fixed Webmail (Roundcube): 1.5.15, 1.6.15roundcube/roundcubemail (Packagist): 1.7-rc5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
RoundcubeWebmailbefore 1.5.15; 1.6.0 to before 1.6.151.5.15, 1.6.15Patch availableCNA
—roundcube/roundcubemail (Packagist)1.7-beta to before 1.7-rc51.7-rc5Patch availableGHSA-w846-74jr-76cv
  • Webmail VendorRoundcube Affected before 1.5.15; 1.6.0 to before 1.6.15 Fixed in 1.5.15, 1.6.15 Patch available CNA
  • roundcube/roundcubemail (Packagist) Vendor— Affected 1.7-beta to before 1.7-rc5 Fixed in 1.7-rc5 Patch available GHSA-w846-74jr-76cv

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*before 1.5.15; 1.6.0 to before 1.6.15VulnerableRoundcube
  • cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:* Versions before 1.5.15; 1.6.0 to before 1.6.15 Vulnerable ·Roundcube

Remediation

  • Fix · CNA Webmail (Roundcube) Fixed in 1.5.15, 1.6.15
  • Fix · GHSA-w846-74jr-76cv roundcube/roundcubemail (Packagist) Fixed in 1.7-rc5 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-35545
  2. 2026-10-03 Alias added: GHSA-w846-74jr-76cv

References

Patch 3

Advisory 2

Other 4

  • TI-2025-31204 Deserialization of untrusted data in Roundcube Webmail KEVCVSS 3.1CRITICAL 9.9
  • TI-2021-19778 Roundcube before 1.3.17 and 1.4.x before 1.4.12 is prone to a potential SQL injection via search or search_params. KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-10051 rcube_image.php in Roundcube Webmail before 1.4.4 allows attackers to execute arbitrary… KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-28025 A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7… KEVCVSS 3.1CRITICAL 9.3
  • TI-2017-12250 Roundcube Webmail before 1.1.10, 1.2.x before 1.2.7, and 1.3.x before 1.3.3 allows… KEVCVSS 3.1HIGH 7.8
  • TI-2025-41994 Cross-site scripting in Roundcube Webmail KEVCVSS 3.1HIGH 7.2
See all 112 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences