CVE-2026-75002: CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection') in Roundcube Webmail
CVE-2026-75002 is a command injection vulnerability in Roundcube Webmail versions 1.6.0 and 1.7.0. It affects the mail search functionality and involves LITERAL+ byte-count desynchronization, which can lead to information disclosure or privilege escalation via IMAP command injection. The vulnerability has a high severity rating with a CVSS score of 7.1. No official patch or remediation guidance is currently provided by the vendor.
AI Analysis
Technical Summary
This vulnerability in Roundcube Webmail before versions 1.6.18 and 1.7.3 allows an attacker to exploit improper neutralization of special elements in IMAP commands. Specifically, mail search and LITERAL+ byte-count desynchronization can be manipulated to perform IMAP command injection, potentially resulting in information disclosure or privilege escalation. The affected versions explicitly include 1.6.0 and 1.7.0. There is no vendor advisory or patch link available at this time, and the remediation level is not specified.
Potential Impact
Successful exploitation can lead to unauthorized disclosure of information or escalation of privileges within the affected Roundcube Webmail environment. This could compromise user data confidentiality and system integrity. The attack requires network access and low privileges but no user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider upgrading to versions 1.6.18 or 1.7.3 or later once available, as these versions are indicated as fixed in the description. Monitor vendor communications for updates.
CVE-2026-75002: CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection') in Roundcube Webmail
Description
CVE-2026-75002 is a command injection vulnerability in Roundcube Webmail versions 1.6.0 and 1.7.0. It affects the mail search functionality and involves LITERAL+ byte-count desynchronization, which can lead to information disclosure or privilege escalation via IMAP command injection. The vulnerability has a high severity rating with a CVSS score of 7.1. No official patch or remediation guidance is currently provided by the vendor.
CVSS v3.1
Score 7.1high
Affected software
pkg:github/roundcube/roundcubemailRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Roundcube Webmail before versions 1.6.18 and 1.7.3 allows an attacker to exploit improper neutralization of special elements in IMAP commands. Specifically, mail search and LITERAL+ byte-count desynchronization can be manipulated to perform IMAP command injection, potentially resulting in information disclosure or privilege escalation. The affected versions explicitly include 1.6.0 and 1.7.0. There is no vendor advisory or patch link available at this time, and the remediation level is not specified.
Potential Impact
Successful exploitation can lead to unauthorized disclosure of information or escalation of privileges within the affected Roundcube Webmail environment. This could compromise user data confidentiality and system integrity. The attack requires network access and low privileges but no user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider upgrading to versions 1.6.18 or 1.7.3 or later once available, as these versions are indicated as fixed in the description. Monitor vendor communications for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-08-17T12:48:40.890Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8309b6bf8831d539eb8047
Added to database: 08/17/2026, 13:16:38 UTC
Last enriched: 08/17/2026, 13:26:09 UTC
Last updated: 08/17/2026, 13:34:38 UTC
Views: 4
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