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CVE-2019-11540 is a cross-site script inclusion (XSSI) vulnerability in Pulse Connect Secure and Pulse Policy Secure. The affected session-handling endpoint renders a session identifier in JavaScript, enabling an attacker-controlled page to include the response cross-origin and recover the victim's DSID session cookie. Disclosure of the DSID undermines DSID-based CSRF protections and permits hijacking of an authenticated end-user session.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity session hijacking vulnerability in Pulse Secure that can be exploited remotely without authentication.
A post-authentication cross-site script inclusion vulnerability that exposes the DSID session cookie and can permit bypass of Pulse Secure's DSID-based CSRF protections.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.