In OpenStack Swift before 2.37.2, proxy-server does not strip internal update headers (X-Container-Host, X-Container-Device, X-Delete-At-Host, X-Delete-At-Device) from client requests before forwarding them to object-servers. An authenticated user with write access can inject these headers to redirect container update requests to an attacker-controlled server, enabling server-side request forgery. The SSRF requests expose internal cluster metadata including storage policy indexes, partition mappings, device names, and when at rest encryption is enabled, cipher text and initialization vectors for the container-level encryption key. The attacker can also cause "ghost listings" in arbitrary containers via the shard-range redirect mechanism.

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

  - In OpenStack Swift before 2.37.2, proxy-server does not strip internal update headers (X-Container-Host,
    X-Container-Device, X-Delete-At-Host, X-Delete-At-Device) from client requests before forwarding them to
    object-servers. An authenticated user with write access can inject these headers to redirect container
    update requests to an attacker-controlled server, enabling server-side request forgery. The SSRF requests
    expose internal cluster metadata including storage policy indexes, partition mappings, device names, and
    when at rest encryption is enabled, cipher text and initialization vectors for the container-level
    encryption key. The attacker can also cause "ghost listings" in arbitrary containers via the shard-range
    redirect mechanism. (CVE-2026-50221)

The remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4746 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4746-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/          Carlos Henrique Lima Melara     August 19, 2026                               https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : swift     Version        : 2.30.1-0+deb12u2     CVE ID         : CVE-2026-50221 CVE-2026-71190     Debian Bug     : 1140678 1142973

    Multiple security vulnerabilities were discovered in Swift, a     distributed virtual object store, which could result in information     disclosure via SSRF or denial of service.

    For Debian 12 bookworm, these problems have been fixed in version     2.30.1-0+deb12u2.

    We recommend that you upgrade your swift packages.

    For the detailed security status of swift please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/swift

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian 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 Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6449 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6449-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     August 18, 2026                       https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : swift     CVE ID         : CVE-2026-50221 CVE-2026-71191 CVE-2026-71192

    Multiple security vulnerabilities were discovered in Swift, a     distributed virtual object store, which could result in information     disclosure via SSRF or authorisation bypass in the s3api middleware.

    For the stable distribution (trixie), these problems have been fixed in     version 2.35.1-0+deb13u3.

    We recommend that you upgrade your swift packages.

    For the detailed security status of swift please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/swift

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In OpenStack Swift before 2.37.2, proxy-server does not strip internal update headers (X-Container-Host,     X-Container-Device, X-Delete-At-Host, X-Delete-At-Device) from client requests before forwarding them to     object-servers. An authenticated user with write access can inject these headers to redirect container     update requests to an attacker-controlled server, enabling server-side request forgery. The SSRF requests     expose internal cluster metadata including storage policy indexes, partition mappings, device names, and     when at rest encryption is enabled, cipher text and initialization vectors for the container-level     encryption key. The attacker can also cause ghost listings in arbitrary containers via the shard-range     redirect mechanism. (CVE-2026-50221)

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

ID	Name	Product	Family	Type	Severity
448369	SCA: security update for swift (GHSA-h8rc-w822-q8vq)	Tenable Cloud Security	SCA Checks	Local	medium
448369	SCA: security update for swift (GHSA-h8rc-w822-q8vq)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium
338209	Debian dla-4746 : python3-swift - security update	Nessus	Debian Local Security Checks	Local	high
337867	Debian dsa-6449 : python3-swift - security update	Nessus	Debian Local Security Checks	Local	medium
322295	Linux Distros Unpatched Vulnerability : CVE-2026-50221	Nessus	Misc.	Local	medium

Detections

Analytics

CVE-2026-50221

medium

Tenable Plugins

medium

medium

high

medium

medium