CVE-2026-44545

Aliases:PYSEC-2026-213GHSA-rrc9-mx66-ffcmDEBIAN-CVE-2026-44545CGA-m352-jh64-xj8hCGA-mxj4-84p4-wfg2
Advisory lineage Upstream: 0 Downstream: 5
Analyzed
Published: 03 Jun 2026, 13:17
Last modified:03 Jun 2026, 15:48

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.1 (nvd)
EPSS Score
0.33% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Jun 2026, 13:17
Published
Vulnerability first disclosed
03 Jun 2026, 15:48
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.33%• Percentile: 26%

Techniques & Countermeasures

  • CWE-770•Allocation of Resources Without Limits or Throttling

    The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Affected Systems

  • chainguard•awx

    all

  • debian•python-daphne

    all | all | < 4.1.2-2+deb13u1 | < 4.2.2-0.1

  • djangoproject•daphne

    ≥ 4.2.0, ≤ 4.2.1 | < 4.2.2

  • PyPI•daphne

    < 4.2.2

References (9)