CVE-2026-48845
Remote Image Blocking Bypass in Roundcube Webmail
Publication date: 2026-05-25
Last updated on: 2026-05-25
Assigner: MITRE
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| roundcube | roundcube | From 1.6.14 (inc) to 1.6.16 (inc) |
| roundcube | roundcube | to 1.7.1 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-669 | The product does not properly transfer a resource/behavior to another sphere, or improperly imports a resource/behavior from another sphere, in a manner that provides unintended control over that resource. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability affects Roundcube Webmail versions 1.6.x between 1.6.14 and 1.6.16, and 1.7.x before 1.7.1. It occurs because remote image blocking is not properly enforced for URLs that point to local or private network destinations. As a result, an attacker can send a text/html email message that bypasses this blocking, potentially leading to information disclosure or privilege escalation.
How can this vulnerability impact me? :
The vulnerability can lead to information disclosure, where sensitive data might be exposed to unauthorized parties. Additionally, it may allow privilege escalation, enabling an attacker to gain higher access rights than intended by exploiting the improper handling of remote image blocking in email messages.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
This vulnerability in Roundcube Webmail may lead to information disclosure or privilege escalation via a text/html email message.
Such information disclosure could potentially impact compliance with data protection regulations like GDPR or HIPAA, which require safeguarding personal and sensitive information.
However, specific effects on compliance depend on the context of use and whether sensitive data is exposed due to this vulnerability.