Exploited vulnerability · CISA KEV

Is CVE-2023-41266 exploited? Yes: in CISA KEV since 7 Dec 2023

Gociux · Qlik Sense · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2023-41266, Qlik Sense Path Traversal Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 7 Dec 2023, 100 days after it was published. It is known to be used in ransomware campaigns. It affects Qlik Sense. If you run it, CISA's required action is: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What it is

Qlik Sense contains a path traversal vulnerability that allows a remote, unauthenticated attacker to create an anonymous session by sending maliciously crafted HTTP requests. This anonymous session could allow the attacker to send further requests to unauthorized endpoints.

What to do

1. Check whether you run it. Look for Sense in your asset inventory, including appliances and cloud images. Stack check lists every exploited Qlik CVE at once.
2. Apply the fix. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 29 Aug 2023.
4. Get told next time. Email alerts when CISA adds a CVE for Qlik.

Other exploited CVEs in Sense

• CVE-2023-48365: Qlik Sense HTTP Tunneling Vulnerability (13 Jan 2025)
• CVE-2023-41265: Qlik Sense HTTP Tunneling Vulnerability (7 Dec 2023)

References

• community.qlik.com/t5/Official-Support-Articles/Critical-Security-fixes-for-Ql
• nvd.nist.gov/vuln/detail/CVE-2023-41266

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in December 2023 · Qlik scorecard · act-now radar.