Path Traversal Authentication Bypass in Qlik Sense Enterprise for Windows
CVE-2023-41266 is a path traversal vulnerability in Qlik Sense Enterprise for Windows. According to the provided content, the Qlik proxy permits unauthenticated access to request paths that begin with /resources/qmc/fonts/ and end with a font-file extension such as .ttf. Because the proxy does not properly normalize the path before applying this allow rule, an attacker can use traversal sequences such as ../../../ to escape the intended fonts directory and reach internal REST endpoints. This results in an authentication bypass that allows an unauthenticated remote attacker to generate an anonymous session and send HTTP requests to otherwise unauthorized internal endpoints. The issue affects May 2023 Patch 3 and earlier, February 2023 Patch 7 and earlier, November 2022 Patch 10 and earlier, and August 2022 Patch 12 and earlier. The content also notes this flaw was used as part of exploit chains against internet-exposed Qlik Sense systems and can be combined with CVE-2023-41265 to achieve unauthenticated remote code execution.
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Impact, mitigation & remediation
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Impact
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Mitigation
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Exploits
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.
Affected products & vendors
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
7 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 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.
A specific vulnerability affecting Qlik Sense Enterprise for Windows referenced in a vendor advisory and linked to reporting about exploitation.
The version that knows your environment.
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.