Vulnerabilities (CVE)

Filtered by vendor Open-xchange Subscribe
Total 270 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2026-40020 2 Dovecot, Open-xchange 2 Dovecot, Dovecot 2026-05-18 N/A 3.1 LOW
Attacker can use the IMAP SETACL command to inject the anyone permission to user's dovecot-acl file even if imap_acl_allow_anyone=no. This causes folders to be spammed to all users. The impact is limited to being able to spam folders to other users, no unexpected access is gained. Install to fixed version. No publicly available exploits are known.
CVE-2026-33603 2 Dovecot, Open-xchange 2 Dovecot, Dovecot 2026-05-18 N/A 6.8 MEDIUM
Attacker can use a specially crafted base64 exchange between Dovecot and Client to fake SCRAM TLS channel binding. This requires that the attacker is able to position itself between Dovecot and the client connection. If successful, the attacker can eavesdrop communications between Dovecot and client as MITM proxy. Install fixed version. No publicly available exploits are known.
CVE-2026-40016 2 Dovecot, Open-xchange 2 Dovecot, Dovecot 2026-05-18 N/A 5.3 MEDIUM
Attacker can upload a malicious Sieve script over ManageSieve service (or locally) to bypass configured CPU time limits for Sieve up to 130 times of the configured limit. Attacker can use this to degrade server performance and bypass configured CPU time limits for Sieve scripts. Install fixed version, or alternatively prevent direct access to Sieve scripts via ManageSieve or local access. No publicly available exploits are known.
CVE-2026-27851 2 Dovecot, Open-xchange 2 Dovecot, Dovecot 2026-05-18 N/A 7.4 HIGH
When safe filter is used with variable expansion, all following pipelines on the same string are incorrectly interpreted as safe too, enabling unsafe data to be unescaped. This can enable SQL / LDAP injection attacks when used in authentication. Avoid using safe filter until on fixed version. No publicly available exploits are known.
CVE-2026-42006 2 Dovecot, Open-xchange 2 Dovecot, Dovecot 2026-05-18 N/A 4.3 MEDIUM
An attacker can cause uncontrolled memory usage with excessive bracing over IMAP. The fix in CVE-2026-27857 was incomplete, only blocking one way of doing this, so there was still another way left open. In particular, the fix was for closing braces, but you could still use open braces to bypass the limit. Using excessive bracing, attacker can cause memory usage up to configured memory limit. Install fixed version, or configure vsz_limit for imap process to low value. No publicly available exploits are known.
CVE-2015-1588 1 Open-xchange 2 Open-xchange Appsuite, Open-xchange Server 2026-05-13 4.3 MEDIUM 6.1 MEDIUM
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-2016-6846 1 Open-xchange 4 Documentconverter-api, Office Web, Open-xchange Appsuite Backend and 1 more 2026-05-13 4.3 MEDIUM 6.1 MEDIUM
Cross-site scripting (XSS) vulnerability in Open-Xchange (OX) AppSuite backend before 7.6.2-rev59, 7.8.0 before 7.8.0-rev38, 7.8.2 before 7.8.2-rev8; AppSuite frontend before 7.6.2-rev47, 7.8.0 before 7.8.0-rev30, and 7.8.2 before 7.8.2-rev8; Office Web before 7.6.2-rev16, 7.8.0 before 7.8.0-rev10, and 7.8.2 before 7.8.2-rev5; and Documentconverter-API before 7.8.2-rev5 allows remote attackers to inject arbitrary web script or HTML.
CVE-2024-4367 3 Debian, Mozilla, Open-xchange 4 Debian Linux, Firefox, Thunderbird and 1 more 2026-05-12 N/A 8.8 HIGH
A type check was missing when handling fonts in PDF.js, which would allow arbitrary JavaScript execution in the PDF.js context. This vulnerability affects Firefox < 126, Firefox ESR < 115.11, and Thunderbird < 115.11.
CVE-2016-6853 1 Open-xchange 1 Ox Guard 2026-05-06 4.3 MEDIUM 6.1 MEDIUM
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-2016-4045 1 Open-xchange 1 Open-xchange Appsuite 2026-05-06 4.3 MEDIUM 6.1 MEDIUM
An issue was discovered in Open-Xchange OX App Suite before 7.8.1-rev11. Script code can be embedded to RSS feeds using a URL notation. In case a user clicks the corresponding link at the RSS reader of App Suite, code gets executed at the context of the user. 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.). The attacker needs to reside within the same context to make this attack work.
CVE-2016-6854 1 Open-xchange 1 Ox Guard 2026-05-06 4.3 MEDIUM 6.1 MEDIUM
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-2014-2393 1 Open-xchange 1 Open-xchange Appsuite 2026-05-06 4.3 MEDIUM N/A
Cross-site scripting (XSS) vulnerability in Open-Xchange AppSuite 7.4.1 before 7.4.1-rev11 and 7.4.2 before 7.4.2-rev13 allows remote attackers to inject arbitrary web script or HTML via a Drive filename that is not properly handled during use of the composer to add an e-mail attachment.
CVE-2014-1679 1 Open-xchange 1 Open-xchange Appsuite 2026-05-06 4.3 MEDIUM N/A
Cross-site scripting (XSS) vulnerability in Open-Xchange (OX) AppSuite before 7.2.2-rev31, 7.4.0 before 7.4.0-rev27, and 7.4.1 before 7.4.1-rev17 allows remote attackers to inject arbitrary web script or HTML via the header in an attached SVG file.
CVE-2016-6844 1 Open-xchange 1 Open-xchange Appsuite 2026-05-06 4.3 MEDIUM 6.1 MEDIUM
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-2016-6850 1 Open-xchange 1 Open-xchange Appsuite 2026-05-06 4.3 MEDIUM 6.1 MEDIUM
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 1 Open-xchange 1 Open-xchange Appsuite 2026-05-06 4.3 MEDIUM 6.1 MEDIUM
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-2013-6241 1 Open-xchange 1 Open-xchange Appsuite 2026-05-06 4.0 MEDIUM N/A
The Birthday widget in the backend in Open-Xchange (OX) AppSuite 7.2.x before 7.2.2-rev25 and 7.4.x before 7.4.0-rev14, in certain user-id sharing scenarios, does not properly construct a SQL statement for next-year birthdays, which allows remote authenticated users to obtain sensitive birthday, displayname, firstname, and surname information via a birthdays action to api/contacts, aka bug 29315.
CVE-2016-6848 1 Open-xchange 1 Open-xchange Appsuite 2026-05-06 1.9 LOW 5.5 MEDIUM
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-2016-4028 1 Open-xchange 1 Ox Guard 2026-05-06 3.5 LOW 7.5 HIGH
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-2016-6851 1 Open-xchange 1 Ox Guard 2026-05-06 4.3 MEDIUM 6.1 MEDIUM
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.