Roundcube Webmail 1.6 (LTS)
Roundcube Webmail 1.6 (LTS)
Third-party support for the Roundcube Webmail 1.6 (LTS): 24/7 engineers manage issues, remediate vulnerabilities, and help you maintain compliance — independent of the vendor contract.
24/7 engineers own your Roundcube Webmail 1.6 (LTS) incidents end to end.
Mitigation and patch-around guidance when the vendor no longer ships fixes.
Controls evidence and documentation that keep auditors satisfied.
Specifications
- product
- roundcube
- release
- 1.6
- product Label
- Roundcube Webmail
- release Label
- 1.6 (LTS)
- codename
- lts
- true
- latest Version
- 1.6.18
- release Date
- 2022-07-25
- maintained
- true
- source Url
- https://endoflife.date/roundcube
Lifecycle Dates
- Last OEM Support
- May 10, 2026
OEM vs. 3rd Party Support
See how third-party support compares to the vendor contract for Roundcube Webmail 1.6 (LTS) — monitoring, break/fix, vulnerability work, operations and compliance, before and after EOSL.
| Feature | OEM Support | 3rd Party Support |
|---|---|---|
| Post-EOSL Support | ||
| Break/Fix Support | Until EOSL | |
| 24/7 Monitoring | ||
| Vulnerability Scanning & Remediation | ||
| Managed Operations | ||
| Procedure & Configuration Review | ||
| Compliance & Audit Documentation | Limited | |
| Discounted Migration to Other Platforms |
Why Choose 3rd Party Support for Roundcube Webmail 1.6 (LTS)?
Vulnerability Remediation
Scanning, mitigation and patch-around guidance for Roundcube Webmail 1.6 (LTS) when the vendor no longer ships fixes.
Compliance Maintenance
Procedure review, controls evidence and the documentation auditors ask for — maintained continuously, not scrambled at audit time.
24/7 Expert Support
Engineers who know this release monitor, manage and fix issues around the clock — break/fix to managed operations.
Roundcube Webmail 1.6 (LTS) Support: Frequently Asked Questions
Is the Roundcube Webmail 1.6 (LTS) still supported?
Yes. The Roundcube Webmail 1.6 (LTS) is currently supported by Roundcube Webmail, and third-party support is available as an alternative — issue management, vulnerability remediation, and compliance help independent of the vendor contract.
How much does third-party support for the Roundcube Webmail 1.6 (LTS) cost?
Typically 40-70% below the OEM maintenance renewal price. Exact pricing depends on quantity, service level and location — request a quote and we respond within 24 hours.
Known Vulnerabilities Affecting Roundcube Webmail 1.6 (LTS)
28 published CVEs affect the Roundcube Webmail 1.6 (LTS), including 8 rated critical or high severity. Our 24/7 engineers help you assess exposure, prioritize fixes and apply available patches.
| CVE | Severity | CVSS | Published | Summary |
|---|---|---|---|---|
| CVE-2025-49113 | CRITICAL | 9.9 | Jun 2, 2025 | Roundcube Webmail before 1.5.10 and 1.6.x before 1.6.11 allows remote code execution by authenticated users because the _from parameter in a URL is not validated in program/actions/settings/upload.php, leading to PHP Object Deserialization. |
| CVE-2024-37385 | CRITICAL | 9.8 | Jun 7, 2024 | Roundcube Webmail before 1.5.7 and 1.6.x before 1.6.7 on Windows allows command injection via im_convert_path and im_identify_path. NOTE: this issue exists because of an incomplete fix for CVE-2020-12641. |
| CVE-2024-42009 | CRITICAL | 9.3 | Aug 5, 2024 | A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a victim via a crafted e-mail message that abuses a Desanitization issue in message_body() in program/actions/mail/show.php. |
| CVE-2024-42008 | CRITICAL | 9.3 | Aug 5, 2024 | A Cross-Site Scripting vulnerability in rcmail_action_mail_get->run() in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a victim via a malicious e-mail attachment served with a dangerous Content-Type header. |
| CVE-2026-54433 | HIGH | 7.2 | Jul 14, 2026 | In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, there is Stored Cross-Site Scripting (XSS) via a crafted plain-text email message. The attacker-controlled JavaScript executes within the victim's authenticated session simply by opening or previewing the message (zero-click). |
| CVE-2026-62643 | HIGH | 7.2 | Jul 14, 2026 | In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. NOTE: this issue exists because of insufficient fixes for CVE-2026-35540 and CVE-2026-48843. |
| CVE-2025-68461 | HIGH | 7.2 | Dec 18, 2025 | Roundcube Webmail before 1.5.12 and 1.6 before 1.6.12 is prone to a Cross-Site-Scripting (XSS) vulnerability via the animate tag in an SVG document. |
| CVE-2025-68460 | HIGH | 7.2 | Dec 18, 2025 | Roundcube Webmail before 1.5.12 and 1.6 before 1.6.12 is prone to a information disclosure vulnerability in the HTML style sanitizer. |
| CVE-2026-62644 | MEDIUM | 6.4 | Jul 14, 2026 | In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, the password plugin of the Roundcube Webmail was subject to username spoofing via session data, which could lead to account takeover. |
| CVE-2026-35539 | MEDIUM | 6.1 | Apr 3, 2026 | An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. XSS exists because of insufficient HTML attachment sanitization in preview mode. A victim must preview a text/html attachment. |
| CVE-2024-57004 | MEDIUM | 6.1 | Feb 3, 2025 | Cross-Site Scripting (XSS) vulnerability in Roundcube Webmail 1.6.9 allows remote authenticated users to upload a malicious file as an email attachment, leading to the triggering of the XSS by visiting the SENT session. |
| CVE-2024-37384 | MEDIUM | 6.1 | Jun 7, 2024 | Roundcube Webmail before 1.5.7 and 1.6.x before 1.6.7 allows XSS via list columns from user preferences. |
| CVE-2024-37383 | MEDIUM | 6.1 | Jun 7, 2024 | Roundcube Webmail before 1.5.7 and 1.6.x before 1.6.7 allows XSS via SVG animate attributes. |
| CVE-2023-47272 | MEDIUM | 6.1 | Nov 6, 2023 | Roundcube 1.5.x before 1.5.6 and 1.6.x before 1.6.5 allows XSS via a Content-Type or Content-Disposition header (used for attachment preview or download). |
| CVE-2023-5631 | MEDIUM | 6.1 | Oct 18, 2023 | Roundcube before 1.4.15, 1.5.x before 1.5.5, and 1.6.x before 1.6.4 allows stored XSS via an HTML e-mail message with a crafted SVG document because of program/lib/Roundcube/rcube_washtml.php behavior. This could allow a remote attacker to load arbitrary JavaScript code. |
| CVE-2023-43770 | MEDIUM | 6.1 | Sep 22, 2023 | Roundcube before 1.4.14, 1.5.x before 1.5.4, and 1.6.x before 1.6.3 allows XSS via text/plain e-mail messages with crafted links because of program/lib/Roundcube/rcube_string_replacer.php behavior. |
| CVE-2017-17688 | MEDIUM | 5.9 | May 16, 2018 | The OpenPGP specification allows a Cipher Feedback Mode (CFB) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL. NOTE: third parties report that this is a problem in applications that mishandle the Modification Detection Code (MDC) feature or accept an obsolete packet type, not a problem in the OpenPGP specification |
| CVE-2026-35540 | MEDIUM | 5.4 | Apr 3, 2026 | An issue was discovered in Roundcube Webmail 1.6.0 before 1.6.14. Insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. |
| CVE-2026-35545 | MEDIUM | 5.3 | Apr 3, 2026 | An issue was discovered in Roundcube Webmail before 1.5.15 and 1.6.15. The remote image blocking feature can be bypassed via SVG content in an e-mail message. This may lead to information disclosure or access-control bypass. This involves the animate element with attributeName=fill/filter/stroke. |
| CVE-2026-35544 | MEDIUM | 5.3 | Apr 3, 2026 | An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to a fixed-position mitigation bypass via the use of !important. |
Showing the 20 most severe of 28 known CVEs.
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