Bug 2454721 (CVE-2026-35538)

Summary: CVE-2026-35538 Roundcube Webmail: Roundcube Webmail: IMAP injection and CSRF bypass due to unsanitized search arguments
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in Roundcube Webmail. Unsanitized IMAP SEARCH command arguments can be exploited by an attacker during mail search. This vulnerability could lead to IMAP injection, allowing an attacker to execute arbitrary IMAP commands, or a Cross-Site Request Forgery (CSRF) bypass, enabling unauthorized actions.
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2454792, 2454793    
Bug Blocks:    

Description OSIDB Bzimport 2026-04-03 05:01:55 UTC
An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Unsanitized IMAP SEARCH command arguments could lead to IMAP injection or CSRF bypass during mail search.