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CVE-2026-35545

28
FAUCET Score

CVE-2026-35545 identifies a remote image blocking bypass vulnerability affecting Roundcube Webmail versions before 1.5.15 and 1.6.15. This flaw permits an attacker to circumvent the image blocking feature via SVG content, specifically the 'animate' element, embedded in an email. With a CVSSv3.1 score of 5.3 (Medium), the vulnerability presents a network-based attack vector with low complexity, potentially leading to information disclosure or access-control bypass. There is currently no evidence of active exploitation, public exploit code, or significant community discussion regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.5.15CPE matchmatch criteria
cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
>= 1.6.0, < 1.6.15CPE matchmatch criteria
cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
>= 0, < 1.5.15CPE match
cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.33%
Probability of exploitation in next 30 days
EPSS Percentile
25.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0033 is in the 7th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: roundcube/roundcubemailFixed in: 1.7-rc5
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-w846-74jr-76cvmedium

Roundcube Webmail: Remote image blocking feature can be bypassed via SVG content in an e-mail message

Apr 3, 2026

References

github.com / roundcube/roundcubemail/commit/7ad62de184368bf42c0f522d1aacc030f5ddcc46
Patch
github.com / roundcube/roundcubemail/commit/9d18d524f3cc211003fc99e2e54eed09a2f3da88
Patch
github.com / roundcube/roundcubemail/commit/fe1320b199d3a2f58351bb699c9ed4316e73221b
Patch
github.com / roundcube/roundcubemail/releases/tag/1.5.15
Release Notes
github.com / roundcube/roundcubemail/releases/tag/1.6.15
Release Notes
github.com / roundcube/roundcubemail/releases/tag/1.7-rc6
Release Notes
roundcube.net / news/2026/03/29/security-updates-1.7-rc6-1.6.15-1.5.15
Vendor Advisory