Improper Input Validation vulnerability in the upload functionality for user avatars allows functionality misuse due to missing check of filetypes. This issue affects OTRS: from 7.0.X through 7.0.48, from 8.0.X through 8.0.37, from 2023 through 2023.1.1.

An improper Input Validation vulnerability in OTRS or ((OTRS)) Community Edition database layer module allows an unauthenticated SQL injection which can lead to an authentication bypass. This issue only affects the system if the MySQL/MariaDB server is configured with the NOBACKSLASHESCAPES SQL mode.

This issue affects OTRS:

7.0.X 8.0.X 2023.X 2024.X 2025.X 2026.X before 2026.4.X (OTRS)) Community Edition: 6.0.x

Products based on the ((OTRS)) Community Edition also very likely to be affected

In OTRS 6.0.x up to and including 6.0.1, OTRS 5.0.x up to and including 5.0.24, and OTRS 4.0.x up to and including 4.0.26, an attacker who is logged into OTRS as an agent can manipulate form parameters (related to PGP) and execute arbitrary shell commands with the permissions of the OTRS or web server user.

Open Ticket Request System (OTRS) 4.0.x before 4.0.28, 5.0.x before 5.0.26, and 6.0.x before 6.0.3, when cookie support is disabled, might allow remote attackers to hijack web sessions and consequently gain privileges via a crafted email.

In Open Ticket Request System (OTRS) 3.3.x through 3.3.16, 4.x through 4.0.23, and 5.x through 5.0.19, an attacker with agent permission is capable of opening a specific URL in a browser to gain administrative privileges / full access. Afterward, all system settings can be read and changed. The URLs in question contain index.pl?Action=Installer with ;Subaction=Intro or ;Subaction=Start or ;Subaction=System appended at the end.

An attacker with the ability to generate session IDs or password reset tokens, either by being able to authenticate or by exploiting OSA-2020-09, may be able to predict other users session IDs, password reset tokens and automatically generated passwords. This issue affects ((OTRS)) Community Edition: 5.0.41 and prior versions, 6.0.26 and prior versions. OTRS; 7.0.15 and prior versions.

Insertion of debug information into log file during building the elastic search index allows reading of sensitive information from articles.This issue affects OTRS: from 7.0.X through 7.0.48, from 8.0.X through 8.0.37, from 2023.X through 2023.1.1.

Improper Check for filenames with overly long extensions in PostMaster (sending in email) or uploading files (e.g. attaching files to mails) of ((OTRS)) Community Edition and OTRS allows an remote attacker to cause an endless loop. This issue affects: OTRS AG: ((OTRS)) Community Edition 5.0.x version 5.0.38 and prior versions; 6.0.x version 6.0.23 and prior versions. OTRS AG: OTRS 7.0.x version 7.0.12 and prior versions.

It's possible to craft Lost Password requests with wildcards in the Token value, which allows attacker to retrieve valid Token(s), generated by users which already requested new passwords. This issue affects: ((OTRS)) Community Edition 5.0.41 and prior versions, 6.0.26 and prior versions. OTRS: 7.0.15 and prior versions.

Multiple SQL injection vulnerabilities in index.pl in Open Ticket Request System (OTRS) 1.0.0 through 1.3.2 and 2.0.0 through 2.0.3 allow remote attackers to execute arbitrary SQL commands and bypass authentication via the (1) user parameter in the Login action, and remote authenticated users via the (2) TicketID and (3) ArticleID parameters of the AgentTicketPlain action.

SQL injection vulnerability in the StateGetStatesByType function in Kernel/System/State.pm in Open Ticket Request System (OTRS) 3.1.x before 3.1.19, 3.2.x before 3.2.14, and 3.3.x before 3.3.4 allows remote attackers to execute arbitrary SQL commands via vectors related to a ticket search URL.

DISPUTED In the Admin Package Manager in Open Ticket Request System (OTRS) 5.0.0 through 5.0.24 and 6.0.0 through 6.0.1, authenticated admins are able to exploit a Blind Remote Code Execution vulnerability by loading a crafted opm file with an embedded CodeInstall element to execute a command on the server during package installation. NOTE: the vendor disputes this issue stating "the behaviour is as designed and needed for different packages to be installed", "there is a security warning if the package is not verified by OTRS Group", and "there is the possibility and responsibility of an admin to check packages before installation which is possible as they are not binary."

An improper neutralization of user-controllable input in OTRS or ((OTRS)) Community Edition ticket handling allows authenticated attackers to perform reflected cross-site scripting (XSS) attacks via crafted request parameters associated with ticket actions. By injecting malicious JavaScript into manipulated request URLs, attackers can execute arbitrary script code in the context of an authenticated agent session when the crafted link is opened.

This issue affects OTRS:

7.0.x

Please note that ((OTRS)) Community Edition 6.x and before are vulnerable. Products based on the ((OTRS)) Community Edition also very likely to be affected

Multiple cross-site request forgery (CSRF) vulnerabilities in (1) CustomerPreferences.pm, (2) CustomerTicketMessage.pm, (3) CustomerTicketProcess.pm, and (4) CustomerTicketZoom.pm in Kernel/Modules/ in Open Ticket Request System (OTRS) 3.1.x before 3.1.19, 3.2.x before 3.2.14, and 3.3.x before 3.3.4 allow remote attackers to hijack the authentication of arbitrary users for requests that (5) create tickets or (6) send follow-ups to existing tickets.

When adding attachments to ticket comments, another user can add attachments as well impersonating the orginal user. The attack requires a logged-in other user to know the UUID. While the legitimate user completes the comment, the malicious user can add more files to the comment.

This issue affects OTRS: from 7.0.X through 7.0.48, from 8.0.X through 8.0.37, from 2023.X through 2023.1.1.

An improper neutralization of active SVG content in OTRS or ((OTRS)) Community Edition ticket article rendering allows attackers to inject specially crafted SVG payloads via email content, leading to browser-side resource exhaustion and denial of service when affected tickets are opened by an agent or customer. The issue can be exploited without JavaScript execution and is not mitigated by the configured Content Security Policy (CSP).

This issue affects OTRS:

7.0.X 8.0.X 2023.X 2024.X 2025.X 2026.X before 2026.4.X

Please note that ((OTRS)) Community Edition 6.x and before are vulnerable. Products based on the ((OTRS)) Community Edition also very likely to be affected

The ACL-customer-status Ticket Type setting in Open Ticket Request System (OTRS) before 3.0.0-beta1 does not restrict the ticket options after an AJAX reload, which allows remote authenticated users to bypass intended ACL restrictions on the (1) Status, (2) Service, and (3) Queue via selections.

Multiple SQL injection vulnerabilities in Kernel/System/Ticket.pm in OTRS-Core in Open Ticket Request System (OTRS) 2.1.x before 2.1.9, 2.2.x before 2.2.9, 2.3.x before 2.3.5, and 2.4.x before 2.4.7 allow remote authenticated users to execute arbitrary SQL commands via unspecified vectors.

In Open Ticket Request System (OTRS) through 3.3.20, 4 through 4.0.26, 5 through 5.0.24, and 6 through 6.0.1, an attacker who is logged in as a customer can use the ticket search form to disclose internal article information of their customer tickets.

Open Ticket Request System (OTRS) before 2.3.0-beta4 checks for the rw permission, instead of the configured merge permission, during authorization of merge operations, which might allow remote authenticated users to bypass intended access restrictions by merging two tickets.

Kernel/Modules/AgentTicketWatcher.pm in Open Ticket Request System (OTRS) 3.0.x before 3.0.21, 3.1.x before 3.1.17, and 3.2.x before 3.2.8 does not properly restrict tickets, which allows remote attackers with a valid agent login to read restricted tickets via a crafted URL involving the ticket split mechanism.

An issue was discovered in Open Ticket Request System (OTRS) 5.0.31 and 6.0.13. Users updating to 6.0.13 (also patchlevel updates) or 5.0.31 (only major updates) will experience data loss in their agent preferences table.

The file upload feature in OTRS and ((OTRS)) Community Edition has a path traversal vulnerability. This issue permits authenticated agents or customer users to upload potentially harmful files to directories accessible by the web server, potentially leading to the execution of local code like Perl scripts. This issue affects OTRS: from 7.0.X through 7.0.49, 8.0.X, 2023.X, from 2024.X through 2024.3.2; ((OTRS)) Community Edition: from 6.0.1 through 6.0.34.

Due to improper handling of uploaded images it is possible in very unlikely and rare conditions to force the agents browser to execute malicious javascript from a special crafted SVG file rendered as inline jpg file. This issue affects: ((OTRS)) Community Edition 5.0.x version 5.0.39 and prior versions; 6.0.x version 6.0.24 and prior versions. OTRS 7.0.x version 7.0.13 and prior versions.

Open Ticket Request System (OTRS) 3.3.9 has XSS in index.pl?Action=AgentStats requests, as demonstrated by OrderBy=[XSS] and Direction=[XSS] attacks. NOTE: this CVE may have limited relevance because it represents a 2017 discovery of an issue in software from 2014. The 3.3.20 release, for example, is not affected.

Cross-site scripting (XSS) vulnerability in Open Ticket Request System (OTRS) 3.3.x before 3.3.16, 4.0.x before 4.0.19, and 5.0.x before 5.0.14 allows remote attackers to inject arbitrary web script or HTML via a crafted attachment.

Open Ticket Request System (OTRS) before 2.3.5 does not properly disable hidden permissions, which allows remote authenticated users to bypass intended queue access restrictions in opportunistic circumstances by visiting a ticket, related to a certain ordering of permission-set and permission-remove operations involving both hidden permissions and other permissions.

Open Ticket Request System (OTRS) 1.0.0 through 1.3.2 and 2.0.0 through 2.0.3, when AttachmentDownloadType is set to inline, renders text/html e-mail attachments as HTML in the browser when the queue moderator attempts to download the attachment, which allows remote attackers to execute arbitrary web script or HTML. NOTE: this particular issue is referred to as XSS by some sources.

Improper filtering of fields when using the export function in the ticket overview of the external interface in OTRS could allow an authorized user to download a list of tickets containing information about tickets of other customers. The problem only occurs if the TicketSearchLegacyEngine has been disabled by the administrator. This issue affects OTRS: 8.0.X, 2023.X, from 2024.X through 2024.4.x

An improper default configuration in OTRS 2026.3.1 causes ticket article forwarding actions to enforce the “Is visible for customer” flag by default and prevent users from disabling it via the UI. This leads to unintended exposure of internal ticket information to the External Frontend

This issue affects OTRS 2026.3.1