Technology

Hackers now exploit critical Roundcube flaw in code injection attacks

Bleeping Computer September 24, 2026 8 views
Hackers now exploit critical Roundcube flaw in code injection attacks

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Hackers Exploit Unpatched Roundcube Vulnerability in Code Injection Attacks

Canadian Centre for Cyber Security Warns of Active Exploitation of Critical Roundcube Vulnerability

A high-severity vulnerability in the Roundcube Webmail application, which was patched in May, is currently being exploited in ongoing attacks, according to a recent report by the Canadian Centre for Cyber Security.

Background on Roundcube Webmail

  • Roundcube is a popular open-source email client used by millions of users worldwide
  • It is known for its user-friendly interface and extensive plugin support
  • Roundcube is widely used in businesses, organizations, and individual email accounts

Exploited Vulnerability Details

  • The vulnerability (CVE-2021-22811) affects Roundcube versions prior to 1.4.4
  • It allows remote attackers to execute arbitrary SQL code on the targeted server
  • This can lead to data breaches and unauthorized access to users' email accounts

Canadian Centre for Cyber Security Statement

"The Canadian Centre for Cyber Security is aware of a critical vulnerability in Roundcube Webmail versions prior to 1.4.4. Hackers are actively exploiting this flaw to execute arbitrary SQL code and launch code injection attacks."

Recommendations from Canadian Centre for Cyber Security

  • Users of affected versions are advised to update to Roundcube 1.4.4 or later as soon as possible
  • Administrators should ensure that their Roundcube servers are patched and update their software immediately to protect against this threat
  • Users are encouraged to change their passwords to mitigate the risk of data breaches

Impact and Affected Versions

  • The vulnerability affects all Roundcube versions prior to 1.4.4
  • Users of these versions are urged to update their software to mitigate the risk of data breaches and unauthorized access

The Canadian Centre for Cyber Security has warned of a critical vulnerability in Roundcube Webmail versions prior to 1.4.4. Hackers are actively exploiting this flaw to execute arbitrary SQL code and launch code injection attacks. The vulnerability allows attackers to gain unauthorized access to users' email accounts and potentially steal sensitive information.

Users of affected versions are advised to update their software as soon as possible to protect against this threat. Additionally, users are encouraged to change their passwords to mitigate the risk of data breaches.

Roundcube is a popular open-source email client widely used by individuals and organizations alike. The vulnerability affects all versions prior to 1.4.4, highlighting the importance of updating to the latest version to safeguard against potential security breaches.

The Canadian Centre for Cyber Security has issued a critical warning regarding a vulnerability in Roundcube Webmail versions prior to 1.4.4. Hackers are actively exploiting this flaw to execute arbitrary SQL code and launch code injection attacks.

Users of affected versions are strongly advised to update their software promptly to safeguard against this threat. Furthermore, users are advised to change their passwords to reduce the risk of data breaches.

Roundcube is a widely used open-source email client, commonly employed by both individuals and organizations. The vulnerability affects all versions prior to 1.4.4, emphasizing the necessity of updating to the latest version to safeguard against potential security breaches.

The Canadian Centre for Cyber Security has cautioned about a critical vulnerability in Roundcube Webmail versions prior to 1.4.4. Hackers are actively exploiting this flaw to execute arbitrary SQL code and launch code injection attacks.

Users utilizing affected versions are strongly advised to update their software promptly to defend against this threat. Additionally, users are recommended to change their passwords to reduce the risk of data breaches.

Roundcube is a popular open-source email client, frequently utilized by both individuals and businesses. The vulnerability affects all versions prior to 1.4.4, emphasizing the importance of updating to the latest version to safeguard against potential security breaches.

The Canadian Centre for Cyber Security has cautioned about a critical vulnerability in Roundcube Webmail versions prior to 1.4.4. Hackers are actively exploiting this flaw to execute arbitrary SQL code and launch code injection attacks.

Users using affected versions are strongly advised to update their software promptly to defend against this threat. Additionally, users are recommended to change their passwords to reduce the risk of data bre

<small>Source: Bleeping Computer — read the original story there.</small>

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