CVE-2026-25916

MEDIUM

4.3

CVSS v3

NVD

Description

Roundcube Webmail before 1.5.13 and 1.6 before 1.6.13, when "Block remote images" is used, does not block SVG feImage.

CWE-420

How to fix

Remediation Available

roundcubeDebian

Fixed in:1.4.15+dfsg.1-1+deb11u7CVE-2026-25916

Fixed in:1.6.5+dfsg-1+deb12u7CVE-2026-25916

Fixed in:1.6.13+dfsg-0+deb13u1CVE-2026-25916

Fixed in:1.6.13+dfsg-1CVE-2026-25916

roundcubeUbuntu

Fixed in:1.2~beta+dfsg.1-0ubuntu1+esm8USN-8223-1

Fixed in:1.3.6+dfsg.1-1ubuntu0.1~esm8USN-8223-1

Fixed in:1.4.3+dfsg.1-1ubuntu0.1~esm8USN-8223-1

Fixed in:1.5.0+dfsg.1-2ubuntu0.1~esm6USN-8223-1

Fixed in:1.6.6+dfsg-2ubuntu0.1+esm3USN-8223-1

roundcube-coreUbuntu

Fixed in:1.2~beta+dfsg.1-0ubuntu1+esm8USN-8223-1

Fixed in:1.3.6+dfsg.1-1ubuntu0.1~esm8USN-8223-1

Fixed in:1.4.3+dfsg.1-1ubuntu0.1~esm8USN-8223-1

Fixed in:1.5.0+dfsg.1-2ubuntu0.1~esm6USN-8223-1

Fixed in:1.6.6+dfsg-2ubuntu0.1+esm3USN-8223-1

roundcube-pluginsUbuntu

Fixed in:1.2~beta+dfsg.1-0ubuntu1+esm8USN-8223-1

Fixed in:1.3.6+dfsg.1-1ubuntu0.1~esm8USN-8223-1

Fixed in:1.4.3+dfsg.1-1ubuntu0.1~esm8USN-8223-1

Fixed in:1.5.0+dfsg.1-2ubuntu0.1~esm6USN-8223-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.63%probability of exploitation in 30 days

47thpercentile

Moderate risk: more likely to be exploited than 47% of all known CVEs.

References

Other references3

Related Vulnerabilities

Other CWE-420 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-20198	Critical	10.0	100%	KEV	Fix
CVE-2025-54309	Critical	9.0	94%	KEV	Fix
CVE-2024-10081	Critical	10.0	39%	-	Fix
CVE-2025-13315	Critical	9.8	33%	-	-
CVE-2024-6242	Unscored	-	9.2%	-	-
CVE-2025-53967	High	8.0	7.4%	-	-

Common questions

How do I fix CVE-2026-25916?

Published advisories record a fix for 4 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2026-25916 being actively exploited?

Not that we know of. CVE-2026-25916 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.63% is the estimated probability that it will be exploited in the next 30 days. That is higher than 47% of all scored CVEs.

How severe is CVE-2026-25916?

CVE-2026-25916 has a CVSS v3 base score of 4.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-25916 affect?

Published advisories record a fix for roundcube (Debian), roundcube (Ubuntu), roundcube-core (Ubuntu), roundcube-plugins (Ubuntu). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-02-09.