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

  - PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, PyJWKClient.get_signing_key() forces
    a fresh HTTP request to the JWKS endpoint for every JWT with an unknown kid value, with no rate limiting.
    Since kid comes from the unverified token header, an attacker can trigger unlimited outbound requests. The
    vulnerability surfaces only when a JWKS fetch fails; an attacker can attempt to provoke that with
    sustained unknown-kid traffic, but the outcome depends on upstream JWKS-endpoint behavior (rate limiting,
    transient errors) which is beyond the attacker's control. This vulnerability is fixed in 2.13.0.
    (CVE-2026-48524)

Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且供應商未提供可用的修補程式。

  - PyJWT 是 Python 中的 JSON Web 令牌實作。在 2.13.0之前，PyJWKClient.get_signing_key（） 會針對每個具有未知 kid 值的JWT強制向 JWKS 端點提出新的HTTP請求，且沒有速率限制。
    由於 kid 來自未經驗證的權杖標頭，因此攻擊者可以觸發無限制的輸出要求。只有在 JWKS 擷取失敗時，此弱點才會浮出水面;攻擊者可以嘗試透過持續的未知兒童流量來引發這種情況，但結果取決於攻擊者無法控制的上游 JWKS 端點行為 （速率限制、暫時性錯誤）。此弱點已在 2.13.0 中修正。
    (CVE-2026-48524)

請注意，Nessus 依賴供應商報告的套件存在。

Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - PyJWT 是 Python 中的 JSON Web Token 实现。在低于 的版本 2.13.0中，PyJWKClient.get_signing_key（） 针对每个具有未知 kid 值的 JWT 强制向 JWKS 端点发出新的 HTTP 请求，并且没有速率限制。
    由于 kid 来自未经验证的标记标头，攻击者可触发无限制的出站请求。只有当 JWKS 提取失败时，才会出现此漏洞;攻击者可尝试通过持续的 unknown-kid 流量来触发此问题，但结果取决于上游 JWKS-endpoint 行为（速率限制、暂时性错误），这超出了攻击者的控制范围。此漏洞已在 2.13.0 中修复。
    (CVE-2026-48524)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

Linux/Unix ホストには、ベンダーが提供するパッチが利用できない脆弱性の影響を受ける複数のパッケージがインストールされています。

  - PyJWTは、PythonのJSON Webトークン実装です。2.13.0の前に、PyJWKClient.get_signing_key()は、レート制限なしで、未知のキッド値を持つすべてのJWTに対してJWKSエンドポイントへの新しいHTTPリクエストを強制します。
    kid は未検証のトークンヘッダーから来ているため、攻撃者は無制限のアウトバウンドリクエストを発生させることができます。この脆弱性は、JWKS フェッチが失敗した場合にのみ表面化します。攻撃者は、持続的な未知の子供のトラフィックでこれを誘発しようとすることができますが、結果は攻撃者の制御が及ばないアップストリームのJWKSエンドポイントの動作(レート制限、一時的なエラー)に依存します。この脆弱性は 2.13.0 で修正されています。
    (CVE-2026-48524)

Nessus は、ベンダーによって報告されたパッケージの存在に依存していることに注意してください。

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2626-1 advisory.

    This update for python-PyJWT fixes the following issues

    - CVE-2026-48522: `PyJWKClient` passes URI arguments directly to `urllib.request.urlopen()` and allows for     SSRF and       token forgery (bsc#1266798).
    - CVE-2026-48523: verifier-side algorithm allow-list bypass when `jwt.decode()` or `jwt.decode_complete()`     are called       with a PyJWK key (bsc#1266799).
    - CVE-2026-48524: unlimited processing of JWTs with unknown kid values by `PyJWKClient.get_signing_key()`     leads to       unbounded JWKS endpoint requests and DoS (bsc#1266800).
    - CVE-2026-48525: unbounded Base64URL decoding of unused payload segment in `b64=false` detached JWS     allows for DoS       (bsc#1266801).
    - CVE-2026-48526: no validation of use of JSON Web Keys in HMAC algorithm when decoding JSON Web Tokens     allows for       forged HS256 tokens (bsc#1266802).

Tenable has extracted the preceding description block directly from the SUSE 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 version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0427 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2026-48525:
    PyJWT is a JSON Web Token implementation in Python. From 2.8.0 to 2.12.1, when verifying detached JWS     tokens using the unencoded-payload option (b64: false, RFC 7797), PyJWT performs Base64URL decoding of     the compact-serialization payload segment before enforcing the detached-payload rules. For b64=false,     PyJWT later discards that decoded payload and replaces it with the caller-provided detached_payload. In     practice, this turns the middle segment into an attacker-controlled work amplifier: a remote client can     supply an arbitrarily large Base64URL payload segment that forces CPU work + memory allocations even if     the signature is invalid. This creates an unauthenticated DoS vector against any endpoint that verifies     detached JWS using PyJWT. This vulnerability is fixed in 2.13.0.

    CVE-2026-48524:
    PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, PyJWKClient.get_signing_key() forces     a fresh HTTP request to the JWKS endpoint for every JWT with an unknown kid value, with no rate limiting.
    Since kid comes from the unverified token header, an attacker can trigger unlimited outbound requests. The     vulnerability surfaces only when a JWKS fetch fails; an attacker can attempt to provoke that with     sustained unknown-kid traffic, but the outcome depends on upstream JWKS-endpoint behavior (rate limiting,     transient errors) which is beyond the attacker's control. This vulnerability is fixed in 2.13.0.

    CVE-2026-48523:
    PyJWT is a JSON Web Token implementation in Python. From 2.9.0 to 2.12.1, there is a verifier-side     algorithm allow-list bypass when jwt.decode() or jwt.decode_complete() are called with a PyJWK key. The     token header alg is checked against the caller-supplied algorithms allow-list, but signature verification     is performed with the algorithm bound to the PyJWK object instead of the header algorithm. An attacker who     controls a registered JWK/JWKS private key can sign with a disallowed algorithm, advertise an allowed     algorithm in the JWT header, and still be accepted. The issue affects the documented     PyJWKClient.get_signing_key_from_jwt(...) flow. This vulnerability is fixed in 2.13.0.

    CVE-2026-48522:
    PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, PyJWKClient passes its uri argument     directly to urllib.request.urlopen() which uses Python stdlib's default OpenerDirector registering     HTTPHandler, HTTPSHandler, FTPHandler, FileHandler, and DataHandler. There is currently no documented     option to restrict which schemes PyJWKClient will fetch. If an application's jku URL ingestion path     accepts attacker-influenced URLs (e.g., from JWT header, configuration file, OAuth flow parameter), the     attacker can cause PyJWKClient to read arbitrary local files via file:// (SSRF on local filesystem), cause     PyJWKClient to attempt FTP / data-URI fetches (broader SSRF surface), or forge tokens that PyJWT verifies     as valid. The library does not directly return non-HTTP(S) URI contents to the attacker; the chained     'plant a JWKS to forge tokens' scenario described in the original report requires additional application-     layer flaws (attacker write access to a filesystem path, untrusted jku derivation) that this fix does not     address. This vulnerability is fixed in 2.13.0.

Tenable has extracted the preceding description block directly from the Tencent 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 SUSE Linux SLES16 / SLES_SAP16 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:22170-1 advisory.

    This update for python-PyJWT fixes the following issues

    - CVE-2026-48522: `PyJWKClient` passes URI arguments directly to `urllib.request.urlopen()` and allows for     SSRF and       token forgery (bsc#1266798).
    - CVE-2026-48523: verifier-side algorithm allow-list bypass when `jwt.decode()` or `jwt.decode_complete()`     are called       with a PyJWK key (bsc#1266799).
    - CVE-2026-48524: unlimited processing of JWTs with unknown kid values by `PyJWKClient.get_signing_key()`     leads to       unbounded JWKS endpoint requests and DoS (bsc#1266800).
    - CVE-2026-48525: unbounded Base64URL decoding of unused payload segment in `b64=false` detached JWS     allows for DoS       (bsc#1266801).
    - CVE-2026-48526: no validation of use of JSON Web Keys in HMAC algorithm when decoding JSON Web Tokens     allows for       forged HS256 tokens (bsc#1266802).

Tenable has extracted the preceding description block directly from the SUSE 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.

  - PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, PyJWKClient.get_signing_key() forces     a fresh HTTP request to the JWKS endpoint for every JWT with an unknown kid value, with no rate limiting.
    Since kid comes from the unverified token header, an attacker can trigger unlimited outbound requests. The     vulnerability surfaces only when a JWKS fetch fails; an attacker can attempt to provoke that with     sustained unknown-kid traffic, but the outcome depends on upstream JWKS-endpoint behavior (rate limiting,     transient errors) which is beyond the attacker's control. This vulnerability is fixed in 2.13.0.
    (CVE-2026-48524)

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
443195	SCA: security update for pyjwt (GHSA-fhv5-28vv-h8m8)	Tenable Self-Hosted Container Security	SCA Checks	2026/6/15	2026/8/1	low
443195	SCA: security update for pyjwt (GHSA-fhv5-28vv-h8m8)	Tenable Cloud Security	SCA Checks	2026/6/15	2026/8/1	low
317822	Linux Distros 未修補弱點：CVE-2026-48524	Nessus	Misc.	2026/5/29	2026/7/27	low
317822	Linux Distros 未修补的漏洞：CVE-2026-48524	Nessus	Misc.	2026/5/29	2026/7/27	low
317822	Linux Distros のパッチ未適用の脆弱性: CVE-2026-48524	Nessus	Misc.	2026/5/29	2026/7/27	low
323065	SUSE SLED15 / SLES15 Security Update : python-PyJWT (SUSE-SU-2026:2626-1)	Nessus	SuSE Local Security Checks	2026/6/26	2026/6/26	high
319736	TencentOS Server 4: python-jwt (TSSA-2026:0427)	Nessus	Tencent Local Security Checks	2026/6/8	2026/6/8	medium
322913	SUSE SLES16 Security Update : python-PyJWT (SUSE-SU-2026:22170-1)	Nessus	SuSE Local Security Checks	2026/6/26	2026/6/26	high
317822	Linux Distros Unpatched Vulnerability : CVE-2026-48524	Nessus	Misc.	2026/5/29	2026/7/27	low

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