CVE-2026-44545
CVE-2026-44545 is a medium-severity vulnerability in Djangoproject Daphne with a CVSS 3.x base score of 5.3. 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-770.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- EPSS exploit prediction: 0% (25th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-34091
- Weakness: CWE-770
- Affected product: Djangoproject Daphne
- Published:
- Last modified:
Description
daphne before 4.2.2 did not pass maxFramePayloadSize or maxMessagePayloadSize to Autobahn's WebSocketServerFactory. Because Autobahn defaults both values to 0 (unlimited), an unauthenticated remote attacker could send arbitrarily large WebSocket messages or frames, causing excessive memory consumption and a denial of service.
Frequently asked questions
- What is CVE-2026-44545?
- daphne before 4.2.2 did not pass maxFramePayloadSize or maxMessagePayloadSize to Autobahn's WebSocketServerFactory. Because Autobahn defaults both values to 0 (unlimited), an unauthenticated remote attacker could send arbitrarily large WebSocket messages or frames, causing excessive memory consumption and a denial of service.
- How severe is CVE-2026-44545?
- CVE-2026-44545 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
- Is CVE-2026-44545 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-44545?
- CVE-2026-44545 affects Djangoproject Daphne. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-44545?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-44545 have an EU (EUVD) identifier?
- Yes. CVE-2026-44545 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34091.
- When was CVE-2026-44545 published?
- CVE-2026-44545 was published on 2026-06-03 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:djangoproject:daphne:*:*:*:*:*:*:*:*
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