CVE-2025-68461Known exploitationNetwork attack vector

Browser script execution via namespaced SVG attribute

Published Dec 18, 2025 · Updated Dec 18, 2025

Cross-site scripting in Roundcube Webmail before 1.5.12 and 1.6.0 through 1.6.11 allows remote attackers to run browser script via email. The rcube_washtml sanitizer compared SVG animate attributeName values without stripping namespace prefixes, so xlink:href evaded the allowed-attribute check and retained a javascript URI. A crafted HTML email therefore executes script in the recipient's Roundcube origin when its message body is rendered, exposing or modifying data accessible to that session.

CVSS severity7.2
High
EPSS probability26.84%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Roundcube Webmail before 1.5.12 and 1.6.0 through 1.6.11 allows remote attackers to run browser script via email. The rcube_washtml sanitizer compared SVG animate attributeName values without stripping namespace prefixes, so xlink:href evaded the allowed-attribute check and retained a javascript URI. A crafted HTML email therefore executes script in the recipient's Roundcube origin when its message body is rendered, exposing or modifying data accessible to that session.

The record

CVE
CVE-2025-68461
Published
Dec 18, 2025
Updated
Dec 18, 2025
Vendor
Roundcube
Product
Roundcube Webmail
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.5.12
  2. Affected versionversion=1.6.0 <1.6.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Roundcube · Roundcube Webmailversion=0 <1.5.12; version=1.6.0 <1.6.12

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
7.2MITRECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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