Critical

DOM-based XSS in Adobe Connect

IdentifiersCVE-2026-27246CWE-79· Improper Neutralization of Input…

CVE-2026-27246 is a DOM-based cross-site scripting vulnerability affecting Adobe Connect versions 2025.3, 12.10, and earlier. The flaw allows an attacker to manipulate the client-side DOM environment so that malicious JavaScript executes within the victim’s browser context when the vulnerable application processes attacker-controlled input. Adobe states that exploitation requires user interaction, specifically that the victim must visit a crafted webpage. The vulnerability is classified with changed scope, indicating impact beyond the vulnerable component’s original security authority.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows execution of attacker-supplied JavaScript in the context of the victim’s Adobe Connect session in the browser. Based on the provided CVSS v3.1 vector (AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N), the primary impacts are high confidentiality and integrity compromise, with no direct availability impact. In practice, this can enable theft of sensitive data accessible to the browser session, unauthorized actions on behalf of the user, session compromise, DOM manipulation, and content tampering within the affected application context.

Mitigation

If you can’t patch tonight, do this now.

Until patched versions are deployed, reduce exposure by limiting opportunities for users to visit attacker-controlled or untrusted webpages, enforcing strong URL filtering and web security controls, and using browser-side protections such as Content Security Policy where applicable. Because exploitation requires user interaction, user awareness measures and restricting access paths that could deliver crafted webpages may reduce risk. Specific vendor-endorsed mitigations beyond patching are not provided in the available content.

Remediation

Patch, then assume compromise.

Upgrade Adobe Connect to a version newer than 2025.3 and 12.10, as the provided content states that versions 2025.3, 12.10, and earlier are affected. Apply the vendor fix referenced in Adobe advisory APSB26-37: https://helpx.adobe.com/security/products/connect/apsb26-37.html.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

AdobeConnectapplication

AdobeConnect Desktop Applicationapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

3 SOURCESView more in app

cvefeed high severityNews

Apr 14, 2026

CVE-2026-27246 - Adobe Connect | Cross-site Scripting (DOM-based XSS) (CWE-79)

A DOM-based cross-site scripting vulnerability in Adobe Connect that allows execution of malicious JavaScript in the victim's browser context and requires user interaction.

What this page doesn’t show

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This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity2