CVE-2026-74999

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the "Add to address book" action was subject to stored XSS...

CVE-2026-74998

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, responses from the CSS Cascading Style Sheets proxy were not validated, which may result in information disclosure or XSS cross-site scripting via MIME sniffing...

EUVD-2026-60083

SiYuan before v3.7.4 fails to set Content-Disposition and X-Content-Type-Options headers when serving arbitrary file assets, allowing stored cross-site scripting attacks. Authenticated attackers can upload HTML files as assets and execute scripts with full kernel API access when the workspace own...

CVE-2026-40126

OutSystems Service Center is vulnerable to a DOM-based Cross-Site Scripting XSS attack that can be exploited by a low-privileged attacker via the upload of a file with a malicious filename containing JavaScript code. The vulnerability exists in all locations where a file can be attached and...

CVE-2026-74800

SiYuan before v3.7.4 fails to set Content-Disposition and X-Content-Type-Options headers when serving arbitrary file assets, allowing stored cross-site scripting attacks. Authenticated attackers can upload HTML files as assets and execute scripts with full kernel API access when the workspace own...

CVE-2026-65913

A flaw was found in DOMPurify. This prototype pollution vulnerability, specifically when operating in USEPROFILES mode, allows a remote attacker to bypass attribute filtering. By manipulating Array.prototype properties, an attacker can cause DOMPurify to accept event handlers as allowed attribute...

CVE-2026-65912

A flaw was found in DOMPurify. An attacker can bypass URI validation by providing a specially crafted predicate function via EXTRAELEMENTHANDLING.attributeCheck. This allows unsafe protocols, such as javascript:, to persist after sanitization, potentially leading to DOM-based cross-site scripting...

CVE-2026-65902

A flaw was found in DOMPurify. An attacker can exploit a vulnerability in how DOMPurify handles its sanitization hooks when default configurations are used. By manipulating the uponSanitizeElement or uponSanitizeAttribute hooks, an attacker can permanently alter the allowed HTML tags and...

CVE-2026-65901

A flaw was found in DOMPurify. This cross-site scripting XSS vulnerability exists in INPLACE mode, where the software trusts attacker-controlled nodeName on live non-form nodes. A remote attacker can supply hostile live Document Object Model DOM objects with script children. These scripts can...

CVE-2026-19998

A weakness has been identified in code-projects Online Shopping System 1.0. Impacted is an unknown function of the file offersmail.php. Executing a manipulation of the argument email can lead to cross site scripting. The attack may be performed from remote. The exploit has been made available to...

CVE-2026-65899

A flaw was found in DOMPurify where the clearConfig function does not properly reset the retained Trusted Types policy. This can lead to a DOMPurify instance, when reused across different security contexts, remaining bound to a previously supplied and potentially unsafe policy. An attacker could...

CVE-2026-19995

Webkul Bagisto (up to 2.4.4) is affected in the RMA Message Handler, specifically the /customer/account/rma/send-message path. The vulnerability stems from manipulating the Message argument, leading to cross-site scripting. Remote exploitation is possible, and exploits have been publicly disclose...

BIT-GITLAB-2026-3093 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 14.0 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an attacker to execute arbitrary JavaScript in another user's browser via a crafted URL, due to improper...

CVE-2026-65898

A flaw was found in DOMPurify. When the setConfig function is used with an uponSanitizeAttribute hook, the ALLOWEDATTR allowlist is not properly cloned. This allows an attacker to register a hook that can permanently modify the shared allowlist, enabling the conditional allowance of dangerous...

BIT-DISCOURSE-2026-72730 Discourse: Stored XSS chat-transcript username unescaped in Rich Text Editor

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, the Rich Text Editor rendered a chat-transcript username as HTML, allowing stored cross-site scripting. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0...

BIT-DISCOURSE-2026-72729 Discourse: Stored XSS in discourse-local-dates plugin

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, the discourse-local-dates plugin rendered crafted local-date format data as HTML on sites with a modified or disabled default Content Security Policy. This issue is fixed in versions 2026.1.6,...

BIT-DISCOURSE-2026-72728 Discourse: Onebox iframe origin allowlist enforces URL authority boundary

Discourse is an open-source discussion platform. Prior to 2026.1.7, an authenticated user could submit specially formed URLs that bypassed the Onebox allowlist and embedded malicious content in a site. This issue is fixed in versions 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0...

BIT-DISCOURSE-2026-72727 Discourse: Stored XSS in the moderation review queue

Discourse is an open-source discussion platform. Prior to 026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, a low-privileged user could place crafted content in the moderation review queue that executed stored cross-site scripting when a moderator viewed it on a site with a modified or disabled default...

BIT-DISCOURSE-2026-72725 Discourse: Stored XSS in staff action logs injects staff UI

Discourse is an open-source discussion platform. Prior to 2026.1.6, the staff action log model rendered unescaped previous and new value fields that could inject stored cross-site scripting into the staff interface. The issue is fixed in 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0...

EUVD-2026-60051

A vulnerability was detected in Alaev SEO Tools Extension up to 1.0.10 on Chrome. This impacts the function addDiv of the file src/popup.html of the component Popup UI. Performing a manipulation results in basic cross site scripting. The attack can be initiated remotely. The exploit is now public...