CVE-2026-44546 Vulnerability Analysis & Exploit Details

CVE-2026-44546
Vulnerability Scoring

3.7

/10

Moderate Risk

Exploiting CVE-2026-44546 requires specific conditions, leading to a moderate security impact.

Attack Complexity Details

Attack Complexity: High
Exploits require significant effort and special conditions.
Attack Vector: Network
Vulnerability is exploitable over a network without physical access.
Privileges Required: None
No privileges are required for exploitation.
Scope: Unchanged
Exploit remains within the originally vulnerable component.
User Interaction: None
No user interaction is necessary for exploitation.

CVE-2026-44546 Details

Status: Analyzed

Last updated: 🕢 15 Jun 2026, 19:52 UTC
Originally published on: 🕑 03 Jun 2026, 14:16 UTC

Time between publication and last update: 12 days

CVSS Release: version 3

CVSS3 Source

6a34fbeb-21d4-45e7-8e0a-62b95bc12c92

CVSS3 Type

Secondary

CVSS3 Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

CVE-2026-44546 Vulnerability Summary

CVE-2026-44546: daphne before 4.2.2 reconstructs a raw HTTP request from Twisted's parsed headers and feeds it to autobahn for WebSocket handshake processing. Twisted does not treat \x0b, \x0c, \x1c, \x1d, \x1e, or \x85 as header line separators, but autobahn decodes header values to str and calls splitlines(). An attacker can exploit this parser differential to inject additional headers into the ASGI scope passed to the application. daphne now rejects requests with these bytes in any header value with a 400 response.

Assessing the Risk of CVE-2026-44546

Access Complexity Graph

The exploitability of CVE-2026-44546 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-44546

CVE-2026-44546 presents a challenge to exploit due to its high attack complexity, but the absence of privilege requirements still makes it a viable target for skilled attackers. A thorough security review is advised.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-44546, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-44546, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Confidentiality: Low
CVE-2026-44546 could lead to minor leaks of non-critical information without major privacy breaches.
Integrity: None
CVE-2026-44546 poses no threat to data integrity.
Availability: None
CVE-2026-44546 does not impact system availability.

CVE-2026-44546 References

External References

https://github.com/django/daphne/blob/main/CHANGELOG.txt

CWE Common Weakness Enumeration

CWE-444

CAPEC Common Attack Pattern Enumeration and Classification

HTTP Response Smuggling CAPEC-273 An adversary manipulates and injects malicious content in the form of secret unauthorized HTTP responses, into a single HTTP response from a vulnerable or compromised back-end HTTP agent (e.g., server). See CanPrecede relationships for possible consequences. Modification/manipulation of HTTP message headers, request-line and body parameters to disrupt and interfere in the interpretation and parsing of HTTP message lengths/boundaries for consecutive HTTP messages by HTTP agents in a HTTP chain or network path.
HTTP Request Smuggling CAPEC-33 An adversary abuses the flexibility and discrepancies in the parsing and interpretation of HTTP Request messages using various HTTP headers, request-line and body parameters as well as message sizes (denoted by the end of message signaled by a given HTTP header) by different intermediary HTTP agents (e.g., load balancer, reverse proxy, web caching proxies, application firewalls, etc.) to secretly send unauthorized and malicious HTTP requests to a back-end HTTP agent (e.g., web server). See CanPrecede relationships for possible consequences. Modification/manipulation of HTTP message headers, request-line and body parameters to disrupt and interfere in the interpretation and parsing of HTTP message lengths/boundaries for consecutive HTTP messages by HTTP agents in a HTTP chain or network path.

Vulnerable Configurations

cpe:2.3:a:djangoproject:daphne:0.8:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.8:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.8.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.8.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.8.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.8.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.9:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.9:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.9.3:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.9.3:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.10.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.10.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.10.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.10.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.10.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.10.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.10.3:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.10.3:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.11.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.11.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.11.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.11.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.11.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.11.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.11.3:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.11.3:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.11.4:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.11.4:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.12.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.12.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.12.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.12.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.12.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.12.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.13.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.13.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.13.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.13.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.14.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.14.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.14.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.14.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.14.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.14.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.14.3:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.14.3:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.15.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:0.15.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.4.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.4.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.4.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:1.4.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.0.3:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.0.3:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.0.4:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.0.4:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.1.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.1.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.1.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.1.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.2.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.2.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.2.3:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.2.3:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.2.4:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.2.4:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.2.5:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.2.5:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.3.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.3.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.4.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.4.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.4.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.4.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.5.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:2.5.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:3.0.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:3.0.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:3.0.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:3.0.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:4.0.0:-:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:4.0.0:-:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:4.0.0:b1:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:4.0.0:b1:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:4.1.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:4.1.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:4.1.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:4.1.2:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:4.2.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:4.2.0:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:4.2.1:*:*:*:*:*:*:*
cpe:2.3:a:djangoproject:daphne:4.2.1:*:*:*:*:*:*:*

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