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.

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - 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. (CVE-2026-44545)

  - 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. (CVE-2026-44546)

The remote Redhat Enterprise Linux 10 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:50336 advisory.

    Red Hat Ansible Automation Platform provides an enterprise framework for building, deploying and managing     IT automation at scale. IT Managers can provide top-down guidelines on how automation is applied to     individual teams, while automation developers retain the freedom to write tasks that leverage existing     knowledge without the overhead. Ansible Automation Platform makes it possible for users across an     organization to share, vet, and manage automation content by means of a simple, powerful, and agentless     language.

    Security Fix(es):

    * automation-controller: PyJWT: Authentication bypass due to forged JSON Web Tokens (CVE-2026-48526)
    * automation-eda-controller: ExternalEventStreamViewSet trusts Subject header without validation and leaks     expected DN (CVE-2026-12383)
    * automation-eda-controller: Authentication bypass in Event-Driven Ansible via forged HTTP header     (CVE-2026-18141)
    * automation-gateway-proxy: Go net package: Denial of Service via long CNAME response in LookupCNAME     (CVE-2026-33811)
    * python3.12-aiohttp: Arbitrary code execution via untrusted input to CookieJar.load() (CVE-2026-34993)
    * python3.12-daphne: daphne: Denial of Service via excessive WebSocket message size (CVE-2026-44545)
    * python3.12-pillow: Denial of Service via crafted GD 2.x image file (CVE-2026-55380)
    * python3.12-pillow: Denial of Service via crafted BDF font file (CVE-2026-55379)
    * python3.12-pillow: Denial of Service via excessive memory allocation when processing font files     (CVE-2026-54060)
    * python3.12-pillow: Denial of Service via crafted PCF font data (CVE-2026-54059)
    * python3.12-pillow: Native heap out-of-bounds write (CVE-2026-59197)
    * python3.12-pyasn1: Denial of Service via crafted ASN.1 REAL values (CVE-2026-59886)
    * python3.12-pyasn1: Denial of Service via crafted ASN.1 OBJECT IDENTIFIER (CVE-2026-59885)
    * receptor: quic-go: Denial of Service via excessive memory allocation in HTTP/3 trailers (CVE-2026-40898)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    For details about this release, refer to the release notes listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:50319 advisory.

    Red Hat Ansible Automation Platform provides an enterprise framework for building, deploying and managing     IT automation at scale. IT Managers can provide top-down guidelines on how automation is applied to     individual teams, while automation developers retain the freedom to write tasks that leverage existing     knowledge without the overhead. Ansible Automation Platform makes it possible for users across an     organization to share, vet, and manage automation content by means of a simple, powerful, and agentless     language.

    Security Fix(es):

    * automation-controller: PyJWT: Authentication bypass due to forged JSON Web Tokens (CVE-2026-48526)
    * automation-eda-controller: ExternalEventStreamViewSet trusts Subject header without validation and leaks     expected DN (CVE-2026-12383)
    * automation-gateway-proxy: Go net package: Denial of Service via long CNAME response in LookupCNAME     (CVE-2026-33811)
    * python3.12-aiohttp: Arbitrary code execution via untrusted input to CookieJar.load() (CVE-2026-34993)
    * python3.12-daphne: daphne: Denial of Service via excessive WebSocket message size (CVE-2026-44545)
    * python3.12-pillow: Denial of Service via crafted PCF font data (CVE-2026-54059)
    * python3.12-pillow: Denial of Service via excessive memory allocation when processing font files     (CVE-2026-54060)
    * python3.12-pillow: Denial of Service via crafted BDF font file (CVE-2026-55379)
    * python3.12-pillow: Denial of Service via crafted GD 2.x image file (CVE-2026-55380)
    * python3.12-pillow: Native heap out-of-bounds write (CVE-2026-59197)
    * python3.12-pyasn1: Denial of Service via crafted ASN.1 REAL values (CVE-2026-59885)
    * python3.12-pyasn1: Denial of Service via crafted ASN.1 OBJECT IDENTIFIER (CVE-2026-59886)
    * receptor: quic-go: Denial of Service via excessive memory allocation in HTTP/3 trailers (CVE-2026-40898)
    * receptor: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries     (CVE-2026-27145)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    For details about this release, refer to the release notes listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2026-44545)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-44545)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
445845	Alpine: multiple py3-daphne packages: security update to 4.2.3-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	medium
445845	Alpine: multiple py3-daphne packages: security update to 4.2.3-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	medium
331965	RHEL 10 / 9 : Red Hat Ansible Automation Platform 2.6 Product Security and Bug Fix Update (Important) (RHSA-2026:50336)	Nessus	Red Hat Local Security Checks	high
331963	RHEL 8 / 9 : Red Hat Ansible Automation Platform 2.5 Product Security and Bug Fix Update (Important) (RHSA-2026:50319)	Nessus	Red Hat Local Security Checks	high
444652	SCA: security update for daphne (GHSA-rrc9-mx66-ffcm)	Tenable Cloud Security	SCA Checks	high
444652	SCA: security update for daphne (GHSA-rrc9-mx66-ffcm)	Tenable Self-Hosted Container Security	SCA Checks	high
318546	Linux Distros Unpatched Vulnerability : CVE-2026-44545	Nessus	Misc.	high

Detections

Analytics

CVE-2026-44545

high

Tenable Plugins

medium

medium

high

high

high

high

high