Threats / Qlik / CVE-2023-41266
CVE-2023-41266
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-08-04
Qlik Sense vulnerability
Qlik Sense contains a path traversal vulnerability allowing unauthenticated remote attackers to create anonymous sessions and access unauthorized endpoints.
Verdict
Today item, not a backlog item.
A critical unauthenticated path traversal flaw in Qlik Sense enables attackers to bypass authentication, establish anonymous sessions, and pivot to restricted functionality. Active exploitation and ransomware deployment confirm severe real-world risk.
CISA KEV Yes · 2023-12-075Ransomware use Flagged5EPSS 0.82124 (verify live)6Exploit Weaponized · public PoC7CVSS 8.23CISA SSVC Exploitation: active · Automatable: yes · Impact: total4
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
8 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-12-07), flagged for known ransomware use.
Probability (EPSS)
EPSS 0.82124 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 8.2 (CVSS:3.1/AC:L/AV:N/A:N/C:H/I:L/PR:N/S:U/UI:N) · Affected: Qlik, Sense. Confirm exact fixed builds in the vendor advisory.CVSS — CNA-assigned (CVE.org), version 3.1, set at disclosure.
Weakness (CWE)
Mapped to CWE-20 Improper Input Validation.CWE assignment from the public NVD record (may be stale); the weakness class drives how the flaw is exploited.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: yes · Technical Impact: totalCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog 100 days after the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
Public exploit available
Public exploit tooling is catalogued for this CVE (a public proof-of-concept / detection template). Catalog entries: nuclei template. We link the catalog page(s) only — no payload or code is hosted or restated here.Link, never host — the catalog page is the source; basicsecurity.net does not redistribute payloads.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft malicious HTTP requests exploiting path traversal to bypass authentication controls.
Business
Authentication mechanisms fail to protect sensitive endpoints from unauthenticated access.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I establish an anonymous session without credentials, gaining a foothold in the application.
Business
Session management allows unauthorized actors to interact with the platform as valid users.
3
Lateral reach — past segmentation narrative 3
Attacker
I enumerate and access unauthorized endpoints to extract data or identify further attack vectors.
Business
Sensitive business intelligence, configurations, and user data become accessible to external threat actors.
4
Data at risk — exfiltration narrative 4
Attacker
I leverage endpoint access to deploy ransomware or establish persistence for follow-on attacks.
Business
Systems become compromised, leading to data encryption, operational disruption, and extortion demands.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05