What is the CVSS score of CVE-2023-48365?

CVE-2023-48365 has a CVSS 3.1 base score of 9.9 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 24.7%.

Is CVE-2023-48365 being actively exploited?

Yes, CVE-2023-48365 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming active in-the-wild exploitation. Immediate patching is required.

Qlik Sense CVE-2023-48365

CRITICAL

HTTP Request/Response Smuggling (CWE-444)

2023-11-15 cve@mitre.org

RCE Microsoft Request Smuggling Qlik Sense Qlik

9.9

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-444 OWASP Top 10:2025 A06:2025 - Insecure Design ASVS 5.0 V4 - API and Web Service HTTP request consistency
Impact	CVSS score of 9.9 (CRITICAL). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required.
Exploit ScenarioDerived	A remote attacker could manipulate HTTP request interpretation between frontend and backend servers by sending crafted requests to the affected application.

Act Now Prioritize within 24-48h. Why: CRITICAL + in CISA KEV (actively exploited), no patch available.

Exploited in the wild (CISA KEV) No patch listed yet 24.7% exploitation probability (EPSS)

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AnalysisAI

Qlik Sense Enterprise for Windows before August 2023 Patch 2 allows unauthenticated remote code execution, aka QB-21683. Rated critical severity (CVSS 9.9), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Enforce strict HTTP parsing, normalize requests at proxy layer, use HTTP/2 end-to-end, reject ambiguous headers.

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Technical ContextAI · show details

This vulnerability is classified as HTTP Request/Response Smuggling (CWE-444), which allows attackers to manipulate HTTP request interpretation between frontend and backend servers. Qlik Sense Enterprise for Windows before August 2023 Patch 2 allows unauthenticated remote code execution, aka QB-21683. Due to improper validation of HTTP headers, a remote attacker is able to elevate their privilege by tunneling HTTP requests, allowing them to execute HTTP requests on the backend server that hosts the repository application. The fixed versions are August 2023 Patch 2, May 2023 Patch 6, February 2023 Patch 10, November 2022 Patch 12, August 2022 Patch 14, May 2022 Patch 16, February 2022 Patch 15, and November 2021 Patch 17. NOTE: this issue exists because of an incomplete fix for CVE-2023-41265. Affected products include: Qlik Qlik Sense.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.9 CRITICAL

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Added to CISA KEV

Jul 14, 2026 - 04:22 CISA

CVE Published

Nov 15, 2023 - 22:15 nvd

CRITICAL 9.9

DescriptionNVD

Qlik Sense Enterprise for Windows before August 2023 Patch 2 allows unauthenticated remote code execution, aka QB-21683. Due to improper validation of HTTP headers, a remote attacker is able to elevate their privilege by tunneling HTTP requests, allowing them to execute HTTP requests on the backend server that hosts the repository application. The fixed versions are August 2023 Patch 2, May 2023 Patch 6, February 2023 Patch 10, November 2022 Patch 12, August 2022 Patch 14, May 2022 Patch 16, February 2022 Patch 15, and November 2021 Patch 17. NOTE: this issue exists because of an incomplete fix for CVE-2023-41265.

Threat Intelligence Overview

EPSS Score

24.7%

Top 2% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

CISA KEV

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity CRITICAL

CISA KEV Yes

Public POC No

EPSS 24.7%

Patch available No

Active threat Yes

Deciding rule

CRITICAL + in CISA KEV (actively exploited), no patch available

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Out-of-Cycle

Exploitation· derived

Active

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

High

Priority Score

125

Low Medium High Critical

KEV: +50

EPSS: +25

CVSS: +50

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

HTTP Request Smuggling HIGH

HTTP request smuggling exploits inconsistencies in how front-end and back-end servers parse HTTP message boundaries.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)NVD

cpe:2.3:a:qlik:qlik_sense:august_2022:-:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:august_2022:patch_1:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:august_2022:patch_10:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:august_2022:patch_11:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:august_2022:patch_12:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:august_2022:patch_13:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:august_2022:patch_2:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:august_2022:patch_3:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:august_2022:patch_4:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:august_2022:patch_5:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:august_2022:patch_6:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:august_2022:patch_7:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:august_2022:patch_8:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:august_2022:patch_9:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:august_2023:-:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:august_2023:patch_1:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:february_2022:-:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:february_2022:patch_1:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:february_2022:patch_10:*:*:enterprise:windows:*:*

cpe:2.3:a:qlik:qlik_sense:february_2022:patch_11:*:*:enterprise:windows:*:*

+ 72 more

More in Qlik Sense

View all

CVE-2023-41265 CRITICAL Emergency POC

9.9 Aug 29

An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise for Windows for versions May 2023 Patch 3 and ear

CVE-2023-41266 MEDIUM This Month POC

6.5 Aug 29

A path traversal vulnerability found in Qlik Sense Enterprise for Windows for versions May 2023 Patch 3 and earlier, Feb

CVE-2019-11628 MEDIUM This Month

6.5 May 01

An issue was discovered in QlikView Server before 11.20 SR19, 12.00 and 12.10 before 12.10 SR11, 12.20 before SR9, and 1

CVE-2022-0564 MEDIUM This Month

5.3 Feb 21

A vulnerability in Qlik Sense Enterprise on Windows could allow an remote attacker to enumerate domain user accounts. Ra

CVE-2025-61138 HIGH This Month

7.5 Nov 20

Qlik Sense Enterprise v14.212.13 was discovered to contain an information leak via the /dev-hub/ directory. Rated high s

Same weakness CWE-444 – HTTP Request/Response Smuggling

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CVE-2026-48710 MEDIUM POC

6.5

CVE-2021-33037 MEDIUM

5.3

CVE-2026-88773 CRITICAL POC

9.3

CVE-2021-23336 MEDIUM POC

5.9

CVE-2018-3907 CRITICAL POC

10.0

CVE-2024-10264 CRITICAL POC

9.8

CVE-2022-2466 CRITICAL POC

9.8

Same technique RCE

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CVE-2021-44228 CRITICAL POC

10.0

CVE-2017-7269 CRITICAL POC

9.8

CVE-2022-47966 CRITICAL POC

9.8

CVE-2012-4681 CRITICAL POC

9.8

CVE-2023-3519 CRITICAL POC

9.8

CVE-2015-5119 CRITICAL POC

9.8

CVE-2016-4117 CRITICAL POC

9.8

CVE-2015-3113 CRITICAL POC

9.8

References

Advisories & patches

ADVISORY https://community.qlik.com/t5/Official-Support-Articles/Critical-Security-fixes-for-Qlik-Sense-Enterprise-for-Windows/tac-p/2120510 REF https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-48365

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