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SUSE-SU-2026:4810-1

Опубликовано: 21 окт. 2026
Источник: suse-cvrf

Описание

Security update for python-oauthlib

This update for python-oauthlib fixes the following issues:

  • CVE-2026-49264: Oauthlib : Unsafe JSONP callback injection in RevocationEndpoint allows arbitrary JavaScript response generation (bsc#1283526).
  • CVE-2026-49265: Oauthlib: Timing Attack Vulnerability in PKCE code_verifier Comparison (bsc#1283527).

Список пакетов

SUSE Linux Enterprise Module for Public Cloud 15 SP4
python311-oauthlib-3.2.2-150400.12.10.1
SUSE Linux Enterprise Module for Python 3 15 SP7
python311-oauthlib-3.2.2-150400.12.10.1

Ссылки

Описание

OAuthLib is an implementation of the OAuth request-signing logic for Python 3.6+. From 0.6.1 until 4.0.0, OAuthLib's RevocationEndpoint in oauthlib/oauth2/rfc6749/endpoints/revocation.py reflects an unvalidated callback request parameter into success and error response bodies when enable_jsonp=True. The callback can come from the query string or request body and is used without restricting it to a legal JavaScript function name. A browser application that loads the revocation response as trusted JSONP and permits attacker influence over callback can therefore execute attacker-controlled JavaScript in the including application's origin, with access to its DOM and script-accessible data. The feature is disabled by default, so only deployments that explicitly enable JSONP are affected. This issue is fixed in version 4.0.0.

Затронутые продукты
SUSE Linux Enterprise Module for Public Cloud 15 SP4:python311-oauthlib-3.2.2-150400.12.10.1
SUSE Linux Enterprise Module for Python 3 15 SP7:python311-oauthlib-3.2.2-150400.12.10.1
Ссылки

Описание

OAuthLib is an implementation of the OAuth request-signing logic for Python 3.6+. From 3.0.0 until 4.0.0, OAuthLib's PKCE checks in oauthlib/oauth2/rfc6749/grant_types/authorization_code.py compare attacker-supplied code_verifier values with stored challenges using ordinary string equality in code_challenge_method_plain and code_challenge_method_s256. Because the comparison can return after a length difference or the first mismatching character, repeated token endpoint measurements can reveal common-prefix timing information that could potentially allow recovery of the code_verifier, unauthorized access-token acquisition, and account takeover. Practical exploitation requires an intercepted, single-use authorization code and enough measurements to overcome real-world network noise; the local timing benchmark does not establish practical remote account takeover, so the weakness remains a defense-in-depth concern. This issue is fixed in version 4.0.0.

Затронутые продукты
SUSE Linux Enterprise Module for Public Cloud 15 SP4:python311-oauthlib-3.2.2-150400.12.10.1
SUSE Linux Enterprise Module for Python 3 15 SP7:python311-oauthlib-3.2.2-150400.12.10.1
Ссылки