Skip to content
Noroxi
CVE-2026-44545· NVD / CVE Program· CNA DSF

Unbounded WebSocket message and frame sizes can cause unauthenticated remote denial of service

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.57% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: python-daphne (Debian:13) 4.1.2-2+deb13u1; python-daphne (Debian:14) 4.2.2-0.1; daphne (PyPI) 4.2.2.
  • Severity is disputed: the assigning authority (CNA) scores it 5.3, NVD 7.5.

Low priority for now. Upgrade to python-daphne (Debian:13) 4.1.2-2+deb13u1; python-daphne (Debian:14) 4.2.2-0.1; daphne (PyPI) 4.2.2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

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.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Jun 3, 2026
Updated
Jul 22, 2026
EPSS
0.6% · 46th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.6%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.5
CNA · DSF
5.3
2.2 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-44545

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Port scanning: 5 full scans a day (members only)
  • Uptime monitoring: 1 site, instant email when it goes down
  • Verify your domain: subdomains and takeover risk scanned every week
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for djangoproject records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
djangoprojectdaphne

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • djangoproject daphnebefore 4.2.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (DSF). Independent of NVD's CPE analysis and usually ahead of it.

  • djangoproject daphne

    • 4.2.2not affected
    • 4.2.0 and later · up to and including 4.2.1affected · python

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12python-daphneall versions—
Debian:13python-daphnebefore 4.1.2-2+deb13u14.1.2-2+deb13u1
Debian:14python-daphnebefore 4.2.2-0.14.2.2-0.1
PyPIdaphnebefore 4.2.24.2.2
Red Hat:ansible_automation_platform_developer:2.5::el8receptorbefore 0:1.6.7-1.el8ap0:1.6.7-1.el8ap
Red Hat:ansible_automation_platform_developer:2.5::el8receptorctlbefore 0:1.6.7-1.el8ap0:1.6.7-1.el8ap
Red Hat:ansible_automation_platform_developer:2.5::el9receptorbefore 0:1.6.7-1.el9ap0:1.6.7-1.el9ap
Red Hat:ansible_automation_platform_developer:2.5::el9receptorctlbefore 0:1.6.7-1.el9ap0:1.6.7-1.el9ap
Red Hat:ansible_automation_platform_developer:2.6::el10python-djangobefore 0:5.2.17-1.el10ap0:5.2.17-1.el10ap
Red Hat:ansible_automation_platform_developer:2.6::el10python3-djangobefore 0:5.2.17-1.el10ap0:5.2.17-1.el10ap
Red Hat:ansible_automation_platform_developer:2.6::el9automation-controllerbefore 0:4.7.15-2.el9ap0:4.7.15-2.el9ap
Red Hat:ansible_automation_platform_developer:2.6::el9automation-controller-clibefore 0:4.7.15-2.el9ap0:4.7.15-2.el9ap
Red Hat:ansible_automation_platform_developer:2.6::el9automation-controller-clibefore 0:4.7.16-1.el9ap0:4.7.16-1.el9ap
Red Hat:ansible_automation_platform_developer:2.6::el9python3.12-djangobefore 0:5.2.17-1.el9ap0:5.2.17-1.el9ap
Red Hat:ansible_automation_platform:2.5::el8automation-controller-venv-towerbefore 0:4.6.31-1.el8ap0:4.6.31-1.el8ap
Red Hat:ansible_automation_platform:2.5::el8automation-eda-controllerbefore 0:1.1.21-1.el8ap0:1.1.21-1.el8ap
Red Hat:ansible_automation_platform:2.5::el8automation-eda-controller-basebefore 0:1.1.21-1.el8ap0:1.1.21-1.el8ap
Red Hat:ansible_automation_platform:2.5::el8automation-eda-controller-base-servicesbefore 0:1.1.21-1.el8ap0:1.1.21-1.el8ap
Red Hat:ansible_automation_platform:2.5::el8automation-eda-controller-event-stream-servicesbefore 0:1.1.21-1.el8ap0:1.1.21-1.el8ap
Red Hat:ansible_automation_platform:2.5::el8automation-eda-controller-worker-servicesbefore 0:1.1.21-1.el8ap0:1.1.21-1.el8ap
Red Hat:ansible_automation_platform:2.5::el8automation-gateway-proxybefore 0:2.5.10-7.el8ap0:2.5.10-7.el8ap
Red Hat:ansible_automation_platform:2.5::el8automation-gateway-proxy-debugsourcebefore 0:2.5.10-7.el8ap0:2.5.10-7.el8ap
Red Hat:ansible_automation_platform:2.5::el8automation-gateway-proxy-serverbefore 0:2.5.10-7.el8ap0:2.5.10-7.el8ap
Red Hat:ansible_automation_platform:2.5::el8automation-gateway-proxy-server-debuginfobefore 0:2.5.10-7.el8ap0:2.5.10-7.el8ap

+44

Same product

djangoproject: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-44546Header injection via WebSocket upgrade parser differential allows ASGI scope header spoofing
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:python-daphne4.1.2-2+deb13u1 · Debian:13Package registry (OSV)
PyPI:daphne4.2.2Package registry (OSV)
red hat:automation-eda-controller0:1.1.21-1.el8ap · Red Hat:ansible_automation_platform:2.5::el8Package registry (OSV)
red hat:automation-eda-controller-base0:1.1.21-1.el8ap · Red Hat:ansible_automation_platform:2.5::el8Package registry (OSV)
red hat:automation-eda-controller-base-services0:1.1.21-1.el8ap · Red Hat:ansible_automation_platform:2.5::el8Package registry (OSV)
red hat:automation-eda-controller-event-stream-services0:1.1.21-1.el8ap · Red Hat:ansible_automation_platform:2.5::el8Package registry (OSV)
red hat:automation-eda-controller-worker-services0:1.1.21-1.el8ap · Red Hat:ansible_automation_platform:2.5::el8Package registry (OSV)
red hat:automation-gateway-proxy0:2.5.10-7.el8ap · Red Hat:ansible_automation_platform:2.5::el8Package registry (OSV)
red hat:automation-gateway-proxy-debugsource0:2.5.10-7.el8ap · Red Hat:ansible_automation_platform:2.5::el8Package registry (OSV)
red hat:automation-gateway-proxy-server0:2.5.10-7.el8ap · Red Hat:ansible_automation_platform:2.5::el8Package registry (OSV)
red hat:automation-gateway-proxy-server-debuginfo0:2.5.10-7.el8ap · Red Hat:ansible_automation_platform:2.5::el8Package registry (OSV)
red hat:python3.12-aiohttp0:3.14.1-2.el8ap · Red Hat:ansible_automation_platform:2.5::el8Package registry (OSV)
red hat:receptor0:1.6.7-1.el8ap · Red Hat:ansible_automation_platform_developer:2.5::el8Package registry (OSV)
red hat:receptorctl0:1.6.7-1.el8ap · Red Hat:ansible_automation_platform_developer:2.5::el8Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-770 · Allocation of Resources Without Limits or Throttling

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records