CVE-2026-48845 Information disclosure in Webmail
Attackers can bypass remote image blocking for local URLs in Roundcube Webmail, potentially leading to information disclosure or privilege escalation via crafted emails.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-48845?
CVE-2026-48845 is a medium-severity vulnerability in Roundcube Webmail, published on 25 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Roundcube Webmail 1.6.x between 1.6.14 and 1.6.16 and 1.7.x before 1.7.1, remote image blocking was not honored for URLs pointing to local/private destinations, which may lead to information disclosure or privilege escalation via a text/html email message.
Weakness: CWE-669
Which versions are affected by CVE-2026-48845?
How do I fix CVE-2026-48845?
Upgrade to a fixed version.
Is CVE-2026-48845 being exploited?
There is no known exploitation of CVE-2026-48845 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-48845, GHSA-g4h2-2gp2-j3wq, UBUNTU-CVE-2026-48845.