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CVE-2023-41266 is a path traversal and authentication-bypass vulnerability in Qlik Sense Enterprise for Windows. The Qlik proxy permits unauthenticated requests matching an allowed font-resource path pattern but fails to normalize the request path before applying that authorization decision. An attacker can use traversal sequences while retaining the permitted path prefix and font-file suffix to reach otherwise protected internal REST endpoints, generating an anonymous session and submitting HTTP requests to unauthorized endpoints. The issue can be used independently for unauthorized internal endpoint access and can be chained with CVE-2023-41265 to obtain unauthenticated remote code execution through Qlik Sense external program tasks.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in Qlik Sense exploited by Cactus ransomware for initial access.
A Qlik Sense Enterprise vulnerability that can enable an unauthenticated attacker to take over the system hosting Qlik Sense. It has reportedly been exploited, alone or in combination with the other listed flaws, to deploy ransomware.
A specific Qlik Sense vulnerability cited as being exploited by the Cactus ransomware group for initial access.
A specific Qlik Sense vulnerability cited as being exploited by the Cactus ransomware group for initial access.
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.