Vendor
Open-Xchange
Open-Xchange is an open source web-based office productivity software suite.
Founded 2005
Products
6
CVEs
67
Across products
245
Status
Private
Products
6- 175 CVEs
- 44 CVEs
- 11 CVEs
- 8 CVEs
- 4 CVEs
- 3 CVEs
Recent CVEs
67| CVE | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|
| CVE-2026-24031 | Hig | 0.50 | 7.7 | 0.00 | Mar 27, 2026 | Dovecot SQL based authentication can be bypassed when auth_username_chars is cleared by admin. This vulnerability allows bypassing authentication for any user and user enumeration. Do not clear auth_username_chars. If this is not possible, install latest fixed version. No publicly available exploits are known. | |
| CVE-2026-27858 | Hig | 0.49 | 7.5 | 0.00 | Mar 27, 2026 | Attacker can send a specifically crafted message before authentication that causes managesieve to allocate large amount of memory. Attacker can force managesieve-login to be unavailable by repeatedly crashing the process. Protect access to managesieve protocol, or install fixed version. No publicly available exploits are known. | |
| CVE-2025-59032 | Hig | 0.49 | 7.5 | 0.00 | Mar 27, 2026 | ManageSieve AUTHENTICATE command crashes when using literal as SASL initial response. This can be used to crash ManageSieve service repeatedly, making it unavailable for other users. Control access to ManageSieve port, or disable the service if it's not needed. Alternatively upgrade to a fixed version. No publicly available exploits are known. | |
| CVE-2016-4028 | Hig | 0.49 | 7.5 | 0.00 | Dec 15, 2016 | An issue was discovered in Open-Xchange OX Guard before 2.4.0-rev8. OX Guard uses an authentication token to identify and transfer guest users' credentials. The OX Guard API acts as a padding oracle by responding with different error codes depending on whether the provided token matches the encryption padding. In combination with AES-CBC, this allows attackers to guess the correct padding. Attackers may run brute-forcing attacks on the content of the guest authentication token and discover user credentials. For a practical attack vector, the guest users needs to have logged in, the content of the guest user's "OxReaderID" cookie and the value of the "auth" parameter needs to be known to the attacker. | |
| CVE-2026-27856 | Hig | 0.48 | 7.4 | 0.00 | Mar 27, 2026 | Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can use this to determine the configured credentials. Figuring out the credential will lead into full access to the affected component. Limit access to the doveadm http service port, install fixed version. No publicly available exploits are known. | |
| CVE-2026-27855 | Med | 0.44 | 6.8 | 0.00 | Mar 27, 2026 | Dovecot OTP authentication is vulnerable to replay attack under specific conditions. If auth cache is enabled, and username is altered in passdb, then OTP credentials can be cached so that same OTP reply is valid. An attacker able to observe an OTP exchange is able to log in as the user. If authentication happens over unsecure connection, switch to SCRAM protocol. Alternatively ensure the communcations are secured, and if possible switch to OAUTH2 or SCRAM. No publicly available exploits are known. | |
| CVE-2016-6854 | Med | 0.43 | 6.1 | 0.01 | Dec 15, 2016 | An issue was discovered in Open-Xchange OX Guard before 2.4.2-rev5. Script code which got injected to a mail with inline PGP signature gets executed when verifying the signature. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.). | |
| CVE-2016-6853 | Med | 0.43 | 6.1 | 0.01 | Dec 15, 2016 | An issue was discovered in Open-Xchange OX Guard before 2.4.2-rev5. Script code and references to external websites can be injected to the names of PGP public keys. When requesting that key later on using a specific URL, such script code might get executed. In case of injecting external websites, users might get lured into a phishing scheme. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.). | |
| CVE-2016-6851 | Med | 0.43 | 6.1 | 0.01 | Dec 15, 2016 | An issue was discovered in Open-Xchange OX Guard before 2.4.2-rev5. Script code can be provided as parameter to the OX Guard guest reader web application. This allows cross-site scripting attacks against arbitrary users since no prior authentication is needed. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.) in case the user has an active session on the same domain already. | |
| CVE-2015-1588 | Med | 0.40 | 6.1 | 0.00 | Jun 8, 2017 | Multiple cross-site scripting (XSS) vulnerabilities in Open-Xchange Server 6 and OX AppSuite before 7.4.2-rev43, 7.6.0-rev38, and 7.6.1-rev21. | |
| CVE-2016-6850 | Med | 0.40 | 6.1 | 0.00 | Dec 15, 2016 | An issue was discovered in Open-Xchange OX App Suite before 7.8.2-rev8. SVG files can be used as profile pictures. In case their XML structure contains iframes and script code, that code may get executed when calling the related picture URL or viewing the related person's image within a browser. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.). | |
| CVE-2016-6847 | Med | 0.40 | 6.1 | 0.00 | Dec 15, 2016 | An issue was discovered in Open-Xchange OX App Suite before 7.8.2-rev8. SVG files can be used as mp3 album covers. In case their XML structure contains script code, that code may get executed when calling the related cover URL. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.). | |
| CVE-2016-6845 | Med | 0.40 | 6.1 | 0.00 | Dec 15, 2016 | An issue was discovered in Open-Xchange OX App Suite before 7.8.2-rev8. Script code within hyperlinks at HTML E-Mails is not getting correctly sanitized when using base64 encoded "data" resources. This allows an attacker to provide hyperlinks that may execute script code instead of directing to a proper location. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.). | |
| CVE-2016-6844 | Med | 0.40 | 6.1 | 0.00 | Dec 15, 2016 | An issue was discovered in Open-Xchange OX App Suite before 7.8.2-rev8. Script code within SVG files is maintained when opening such files "in browser" based on our Mail or Drive app. In case of "a" tags, this may include link targets with base64 encoded "data" references. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.). | |
| CVE-2016-6843 | Med | 0.40 | 6.1 | 0.00 | Dec 15, 2016 | An issue was discovered in Open-Xchange OX App Suite before 7.8.2-rev8. Script code can be injected to contact names. When adding those contacts to a group, the script code gets executed in the context of the user which creates or changes the group by using autocomplete. In most cases this is a user with elevated permissions. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.). | |
| CVE-2016-6842 | Med | 0.40 | 6.1 | 0.00 | Dec 15, 2016 | An issue was discovered in Open-Xchange OX App Suite before 7.8.2-rev8. Setting the user's name to JS code makes that code execute when selecting that user's "Templates" folder from OX Documents settings. This requires the folder to be shared to the victim. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.). | |
| CVE-2016-4026 | Med | 0.40 | 6.1 | 0.00 | Dec 15, 2016 | An issue was discovered in Open-Xchange OX App Suite before 7.8.1-rev11. The content sanitizer component has an issue with filtering malicious content in case invalid HTML code is provided. In such cases the filter will output a unsanitized representation of the content. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.). Attackers can use this issue for filter evasion to inject script code later on. | |
| CVE-2016-4046 | Med | 0.38 | 5.8 | 0.00 | Dec 15, 2016 | An issue was discovered in Open-Xchange OX App Suite before 7.8.1-rev11. The API to configure external mail accounts can be abused to map and access network components within the trust boundary of the operator. Users can inject arbitrary hosts and ports to API calls. Depending on the response type, content and latency, information about existence of hosts and services can be gathered. Attackers can get internal configuration information about the infrastructure of an operator to prepare subsequent attacks. | |
| CVE-2016-6848 | Med | 0.36 | 5.5 | 0.00 | Dec 15, 2016 | An issue was discovered in Open-Xchange OX App Suite before 7.8.2-rev8. API requests can be used to inject, generate and download executable files to the client ("Reflected File Download"). Malicious platform specific (e.g. Microsoft Windows) batch file can be created via a trusted domain without authentication that, if executed by the user, may lead to local code execution. | |
| CVE-2026-27859 | Med | 0.34 | 5.3 | 0.00 | Mar 27, 2026 | A mail message containing excessive amount of RFC 2231 MIME parameters causes LMTP to use too much CPU. A suitably formatted mail message causes mail delivery process to consume large amounts of CPU time. Use MTA capabilities to limit RFC 2231 MIME parameters in mail messages, or upgrade to fixed version where the processing is limited. No publicly available exploits are known. |