PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, when the verifier is decoding JSON Web Tokens, while supporting both asymmetric and HMAC algorithms, the library does not validate use of JSON Web Keys in HMAC algorithm, allowing attacker to use the issuer public key as the secret key for HMAC algorithm. This vulnerability is fixed in 2.13.0.

amazon_alas ALAS2023-2026-1842: Amazon Linux 2023 Security Advisory:ALAS2023-2026-1842

The remote RockyLinux 9 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:26206 advisory.

    * python-pyjwt: PyJWT: Authentication bypass due to forged JSON Web Tokens (CVE-2026-48526)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

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

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:26206 advisory.

    The fence-agents packages provide a collection of scripts for handling remote power management for cluster     devices. They allow failed or unreachable nodes to be forcibly restarted and removed from the cluster.

    Security Fix(es):

    * python-pyjwt: PyJWT: Authentication bypass due to forged JSON Web Tokens (CVE-2026-48526)

    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.

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

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

The remote RockyLinux 10 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:25902 advisory.

    * python-pyjwt: PyJWT: Authentication bypass due to forged JSON Web Tokens (CVE-2026-48526)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

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

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:25902 advisory.

    The fence-agents packages provide a collection of scripts for handling remote power management for cluster     devices. They allow failed or unreachable nodes to be forcibly restarted and removed from the cluster.

    Security Fix(es):

    * python-pyjwt: PyJWT: Authentication bypass due to forged JSON Web Tokens (CVE-2026-48526)

    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.

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

Note that Nessus has not tested for this issue 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.

  - PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, when the verifier is decoding JSON     Web Tokens, while supporting both asymmetric and HMAC algorithms, the library does not validate use of     JSON Web Keys in HMAC algorithm, allowing attacker to use the issuer public key as the secret key for HMAC     algorithm. This vulnerability is fixed in 2.13.0. (CVE-2026-48526)

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

ID	Name	Product	Family	Severity
321391	RockyLinux 9 : fence-agents (RLSA-2026:26206)	Nessus	Rocky Linux Local Security Checks	high
321231	RHEL 9 : fence-agents (RHSA-2026:26206)	Nessus	Red Hat Local Security Checks	high
321191	RockyLinux 10 : fence-agents (RLSA-2026:25902)	Nessus	Rocky Linux Local Security Checks	high
321094	RHEL 10 : fence-agents (RHSA-2026:25902)	Nessus	Red Hat Local Security Checks	high
317775	Linux Distros Unpatched Vulnerability : CVE-2026-48526	Nessus	Misc.	high

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