How severe is CVE-2026-44546?

CVE-2026-44546 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-44546 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44546?

CVE-2026-44546 affects Djangoproject Daphne. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44546?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-44546 have an EU (EUVD) identifier?

Yes. CVE-2026-44546 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34092.

When was CVE-2026-44546 published?

CVE-2026-44546 was published on 2026-06-03 and last updated on 2026-06-17.

CVE-2026-44546

CVE-2026-44546 is a low-severity vulnerability in Djangoproject Daphne with a CVSS 3.x base score of 3.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-444.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34092
Weakness: CWE-444
Affected product: Djangoproject Daphne
Published: 2026-06-03
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-44546?: CVE-2026-44546 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-44546 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44546?: CVE-2026-44546 affects Djangoproject Daphne. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44546?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-44546 have an EU (EUVD) identifier?: Yes. CVE-2026-44546 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34092.
When was CVE-2026-44546 published?: CVE-2026-44546 was published on 2026-06-03 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:djangoproject:daphne:*:*:*:*:*:*:*:*

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