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All errata/sisyphus_riscv64/ALT-PU-2026-17343-1
ALT-PU-2026-17343-1

Package update python3-module-jwt in branch sisyphus_riscv64

Version2.15.1-alt1
Task#0
Published2026-10-02
Max severityCRITICAL
Severity:

Closed issues (24)

BDU:2026-15793
HIGH7.4

Уязвимость функции HMACAlgorithm.prepare_key() библиотеки PyJWT, позволяющая нарушителю обойти существующие механизмы безопасности и получить несанкционированный доступ к защищаемой информации

Published: 2026-10-01Modified: 2026-10-06
CVSS 3.xHIGH 7.4
CVSS:3.x/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0HIGH 7.1
CVSS:2.0/AV:N/AC:H/Au:N/C:C/I:C/A:N
References
BDU:2026-15800
CRITICAL9.1

Уязвимость функции is_pem_format() файла jwt/utils.py библиотеки PyJWT, позволяющая нарушителю обойти существующие механизмы безопасности и раскрыть защищаемую информацию

Published: 2026-10-01Modified: 2026-10-06
CVSS 3.xCRITICAL 9.1
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0CRITICAL 9.4
CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:N
References
BDU:2026-15801
MEDIUM5.9

Уязвимость функции RSAAlgorithm.from_jwk() сценария jwt/api_jwk.py библиотеки PyJWT, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2026-10-01
CVSS 3.xMEDIUM 5.9
CVSS:3.x/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0MEDIUM 5.4
CVSS:2.0/AV:N/AC:H/Au:N/C:N/I:N/A:C
References
BDU:2026-15802
HIGH7.4

Уязвимость функции HMACAlgorithm.prepare_key() сценария jwt/algorithms.py библиотеки PyJWT, позволяющая нарушителю обойти существующие механизмы безопасности

Published: 2026-10-01
CVSS 3.xHIGH 7.4
CVSS:3.x/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0HIGH 7.1
CVSS:2.0/AV:N/AC:H/Au:N/C:C/I:C/A:N
References
BDU:2026-15804
MEDIUM5.3

Уязвимость функции PyJWS._load() файла jwt/api_jws.py библиотеки PyJWT, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2026-10-01
CVSS 3.xMEDIUM 5.3
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 2.0MEDIUM 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:P
References
BDU:2026-15805
MEDIUM5.3

Уязвимость функции get_signing_key_from_jwt() библиотеки PyJWT, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2026-10-01
CVSS 3.xMEDIUM 5.3
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 2.0MEDIUM 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:P
References
CVE-2026-101917
HIGH7.5

PyJWT is a Python implementation of JSON Web Token standards. Prior to 2.14.0, PyJWT get_signing_key_from_jwt is affected because unknown kid misses force refreshes without a negative cache or minimum refresh interval. This occurs when unauthenticated tokens repeatedly use the same unknown kid or varying kid values absent from the cached JWKS. As a result, each cache miss causes PyJWKClient to refresh the JWKS. Consequently, attacker traffic can amplify outbound requests to the configured JWKS endpoint. This issue is fixed in version 2.14.0.

Published: 2026-09-28Modified: 2026-10-07
CVSS 3.xHIGH 7.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
CVE-2026-102265
MEDIUM5.3

PyJWT is a Python implementation of JSON Web Token standards. From 2.13.0 until 2.14.0, PyJWS._load in jwt/api_jws.py is affected because parser catches ValueError but not RecursionError. This occurs when a deeply nested token header reaches json.loads. As a result, RecursionError escapes the documented PyJWT error hierarchy. Consequently, an unauthenticated malformed token can cause a request-level failure and HTTP 500. This issue is fixed in version 2.14.0.

Published: 2026-09-28Modified: 2026-10-07
CVSS 3.xMEDIUM 5.3
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
References
CVE-2026-102267
CRITICAL9.1

PyJWT is a Python implementation of JSON Web Token standards. Prior to 2.14.0, PyJWT PyJWKClient is affected because redirect destinations are not revalidated against the JWKS trust boundary. This occurs when a configured trusted JWKS endpoint returns an attacker-influenced redirect. As a result, PyJWKClient follows the redirect and consumes the redirected response as key material. Consequently, forwarded credentials may be disclosed or verification keys may be substituted. This issue is fixed in version 2.14.0.

Published: 2026-09-28Modified: 2026-10-07
CVSS 3.xCRITICAL 9.1
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
CVE-2026-102268
CRITICAL9.1

PyJWT is a Python implementation of JSON Web Token standards. Prior to 2.14.0, is_pem_format in jwt/utils.py is affected because is_pem_format does not recognize every PEM representation accepted by the cryptography loader. This occurs when an application mixes HMAC and asymmetric algorithms and supplies a mutated public-key PEM as raw key bytes. As a result, HMACAlgorithm.prepare_key treats the unrecognized asymmetric public key as an HMAC secret. Consequently, an attacker who knows the public key can forge authenticated HMAC tokens. This issue is fixed in version 2.14.0.

Published: 2026-09-28Modified: 2026-10-07
CVSS 3.xCRITICAL 9.1
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
CVE-2026-102269
MEDIUM5.4

PyJWT is a Python implementation of JSON Web Token standards. Prior to 2.14.0, PyJWT signature segment is affected because signature segment decoding accepts characters outside the canonical Base64URL representation. This occurs when non-Base64URL characters are appended to a valid compact JWS signature segment. As a result, base64url_decode produces the same signature bytes for different serialized segments. Consequently, raw-token revocation checks can fail to recognize an equivalent modified token. This issue is fixed in version 2.14.0.

Published: 2026-09-28Modified: 2026-10-06
CVSS 3.xMEDIUM 5.4
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
References
CVE-2026-102271
HIGH7.4

PyJWT is a Python implementation of JSON Web Token standards. From 2.4.0 until 2.14.0, PyJWT HMACAlgorithm.prepare_key is affected because asymmetric-key guard relies on textual markers that are absent from DER encoding. This occurs when an application mixes HMAC and asymmetric algorithms and supplies a DER public key as the shared verification key. As a result, PyJWT uses public DER bytes as an HMAC secret. Consequently, an attacker who knows the public key can forge authenticated HMAC tokens. This issue is fixed in version 2.14.0.

Published: 2026-09-28Modified: 2026-10-06
CVSS 3.xHIGH 7.4
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
References
CVE-2026-102272
HIGH7.4

PyJWT is a Python implementation of JSON Web Token standards. From 2.13.0 until 2.14.0, HMACAlgorithm.prepare_key in jwt/algorithms.py is affected because raw-JWK detector does not normalize accepted Unicode byte-order marks before checking for JSON. This occurs when a public JWK is prefixed with a UTF-8 BOM and used in a mixed-algorithm verification path. As a result, public JWK bypasses asymmetric-key detection and becomes the HMAC secret. Consequently, an attacker who knows the public key can forge authenticated tokens. This issue is fixed in version 2.14.0.

Published: 2026-09-28Modified: 2026-10-06
CVSS 3.xHIGH 7.4
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
References
CVE-2026-102273
HIGH7.4

PyJWT is a Python implementation of JSON Web Token standards. From 2.13.0 until 2.14.0, PyJWT HMACAlgorithm.prepare_key is affected because HMAC key guard only recognizes top-level public JWK forms and misses container representations. This occurs when an application allows HMAC and asymmetric algorithms and passes a public JWK container as the raw key. As a result, public asymmetric key material is accepted as the HMAC secret. Consequently, an attacker who knows the public key can forge a token with arbitrary authenticated claims. This issue is fixed in version 2.14.0.

Published: 2026-09-28Modified: 2026-10-06
CVSS 3.xHIGH 7.4
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
References
CVE-2026-102274
HIGH7.5

PyJWT is a Python implementation of JSON Web Token standards. From 2.9.0 until 2.14.0, PyJWKSet does not catch the plain ValueError raised for malformed RSA JWK components by RSAAlgorithm.from_jwk in jwt/api_jwk.py. This occurs when a JWK Set contains a malformed RSA key alongside otherwise usable keys. As a result, one malformed member aborts construction of the entire PyJWKSet. Consequently, applications can experience authentication failures or request-level denial of service. This issue is fixed in version 2.14.0.

Published: 2026-09-28Modified: 2026-10-06
CVSS 3.xHIGH 7.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
GHSA-2gx3-rcp4-g85q
MEDIUM5.3

PyJWT: PyJWKClient still amplifies unauthenticated JWKS fetches on unknown kid values (incomplete fix of CVE-2026-48524)

Published: 2026-09-29
CVSS 3.xMEDIUM 5.3
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
References
GHSA-8wjv-2p76-3863
MEDIUM5.3

PyJWT: Uncaught RecursionError in jwt.decode() on deeply nested token header

Published: 2026-09-29
CVSS 3.xMEDIUM 5.3
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
References
GHSA-9v7f-9g4p-ffgj
HIGH7.4

PyJWT: PyJWKClient follows redirects when fetching JWKS

Published: 2026-09-29
CVSS 3.xHIGH 7.4
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
References
GHSA-ffc3-869f-jxw9
CRITICAL9.1

PyJWT: Asymmetric-PEM detection bypass: whitespace/line-ending-mutated public keys skip the HS/asymmetric confusion guard

Published: 2026-09-29Modified: 2026-09-29
CVSS 3.xCRITICAL 9.1
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
GHSA-hxm8-2xgr-2p9m
MEDIUM4.8

PyJWT: Non-canonical signature segments enable raw-token revocation bypass

Published: 2026-09-29
CVSS 3.xMEDIUM 4.8
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
References
GHSA-p4g4-x82p-q773
HIGH7.4

PyJWT: Public keys in DER form are accepted as HMAC secrets, bypassing the CVE-2022-29217 guard

Published: 2026-09-29
CVSS 3.xHIGH 7.4
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
References
GHSA-w6j9-cwv2-h6wq
MEDIUM5.9

PyJWT: Malformed RSA JWK aborts parsing of an entire JWK Set

Published: 2026-09-29
CVSS 3.xMEDIUM 5.9
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
References