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1477 articles · 102558 vulns · 38/41 feeds (7d)
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5.3
CVE-2026-35542EXPLOITEDPATCHED
roundcube · webmail

CVE-2026-35542: An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. The remote image blocking feature can be bypassed

Description

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. The remote image blocking feature can be bypassed via a crafted background attribute of a BODY element in an e-mail message. This may lead to information disclosure or access-control bypass.

Affected Products

VendorProductVersions
roundcubewebmail0, 1.6.0, 1.5.13, 1.6.13

References

  • https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14
  • https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5
  • https://github.com/roundcube/roundcubemail/commit/fd0e98178db5c73eaa93d005b561874923f9b0f0
  • https://github.com/roundcube/roundcubemail/releases/tag/1.6.14
  • https://github.com/roundcube/roundcubemail/commit/fde14d01adc9f37893cd82b635883e516ed453f8
  • https://github.com/roundcube/roundcubemail/releases/tag/1.5.14
  • https://github.com/roundcube/roundcubemail/commit/e052328e3dc75f13adc2e314eaa4096ac21084ad

Related News (1 articles)

Tier C
VulDB6h ago
CVE-2026-35542 | Roundcube Webmail up to 1.5.13/1.6.13 BODY Element resource transfer
→ No new info (linked only)
CVSS 3.15.3 HIGH
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CISA KEV❌ No
Actively exploited✅ Yes
Patch available
1.5.141.6.14
CWECWE-669
PublishedApr 3, 2026
Last enriched6h agov2
Tags
resource transferremote exploitation
Trending Score46
Source articles1
Independent1
Info Completeness9/14
Missing: epss, kev, exploit, iocs, mitre_attack

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Related CVEs (5)

HIGHCVE-2026-35544EXP
CVE-2026-35544: An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Insufficient Cascading Style Sheets (CSS) sanitiz
Trending: 46
HIGHCVE-2026-35540EXP
CVE-2026-35540: An issue was discovered in Roundcube Webmail 1.6.0 before 1.6.14. Insufficient Cascading Style Sheets (CSS) sanitization
Trending: 46
CRITICALCVE-2026-35538
CVE-2026-35538: An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Unsanitized IMAP SEARCH command arguments could l
Trending: 30
HIGHCVE-2026-35539
CVE-2026-35539: An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. XSS exists because of insufficient HTML attachmen
Trending: 27
HIGHCVE-2026-35537
CVE-2026-35537: An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Unsafe deserialization in the redis/memcache sess
Trending: 27

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Verification

State: unverified
Confidence: 0%

Vulnerability Timeline

CVE Published
Apr 3, 2026
Discovered by ZDM
Apr 3, 2026
Actively Exploited
Apr 3, 2026
Patch Available
Apr 3, 2026
Updated: affectedVersions, severity, activelyExploited, tags
Apr 3, 2026

Version History

v2
Last enriched 6h ago
v2Tier C6h ago

Updated affected versions to 1.5.13 and 1.6.13, changed severity to HIGH, and noted that the vulnerability is actively exploited.

affectedVersionsseverityactivelyExploitedtags
via VulDB
v17h ago

Initial creation