CVE-2026-3456-OAuth2-PKCE-Race-Condition-Account-Takeover-

8. CVE-2026-3456 – OAuth2 PKCE Race Condition Account Takeover Overview A race condition in the OAuth2 authorization server allows an attacker to reuse a victim’s authorization code before the legitimate client redeems it, by guessing or brute‑forcing the PKCE codeverifier within a small time...

auth

PlaceOS Authentication ENV VARS If a sentry Data Source Name is configured SENTRYDSN=https://@.ingest.sentry.io/ A shared secret for encrypting cookies SECRETKEYBASE=84b04ea4259542f365 JWT Private key JWTSECRET=Base64 Encoded RSA PRIVATE KEY Database name and host RETHINKDBDB=placedevelopment...

CVE-2026-73309

CVE-2026-73309: Empty OAuth2 credentials bypass XenForo before 2.3.13 can skip OAuth2 client-secret and PKCE verification when an empty string reaches the token endpoint. What happens The endpoint checks whether clientsecret and codeverifier keys exist, then performs the comparisons only when the...

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 bsc1283526. CVE-2026-49265: Oauthlib: Timing Attack Vulnerability in PKCE codeverifier Comparison bsc1283527...

Security update for python-oauthlib (moderate)

openSUSE security update: security update for python-oauthlib ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:22103-1 Rating: moderate References: bsc1283526 bsc1283527 Cross-References: CVE-2026-49264 CVE-2026-49265 CVSS scores: CVE-2026-49264 SUSE...

OPENSUSE-SU-2026:22103-1 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 bsc1283526. - CVE-2026-49265: Oauthlib: Timing Attack Vulnerability in PKCE codeverifier Comparison...

SUSE-SU-2026:24189-1 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 bsc1283526. - CVE-2026-49265: Oauthlib: Timing Attack Vulnerability in PKCE codeverifier Comparison...

SUSE-SU-2026:24246-1 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 bsc1283526. - CVE-2026-49265: Oauthlib: Timing Attack Vulnerability in PKCE codeverifier Comparison...

CVE-2026-49265

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/granttypes/authorizationcode.py compare attacker-supplied codeverifier values with stored challenges using ordinary string equality in...

DEBIAN-CVE-2026-49265

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/granttypes/authorizationcode.py compare attacker-supplied codeverifier values with stored challenges using ordinary string equality in...

CVE-2026-49265

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/granttypes/authorizationcode.py compare attacker-supplied codeverifier values with stored challenges using ordinary string equality in...

CVE-2026-49265 OAuthLib: Timing Attack Vulnerability in PKCE code_verifier Comparison

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/granttypes/authorizationcode.py compare attacker-supplied codeverifier values with stored challenges using ordinary string equality in...

CVE-2026-49265 OAuthLib: Timing Attack Vulnerability in PKCE code_verifier Comparison

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/granttypes/authorizationcode.py compare attacker-supplied codeverifier values with stored challenges using ordinary string equality in...

CVE-2026-49265

A flaw was found in oauthlib. A timing side-channel vulnerability in the Proof Key for Code Exchange PKCE validation process allows a remote attacker to recover secret verification codes. Because comparison operations do not execute in constant time, an attacker who has intercepted an authorizati...

oauthlib side-channel information leakage vulnerability

oauthlib versions from 3.0.0 to 4.0.0 had a vulnerability related to side-channel information leakage. This vulnerability stemmed from the use of ordinary string comparisons in the PKCE verification process, where codeverifier was compared with the stored challenge. This comparison could...

SUSE-SU-2026:24139-1 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 bsc1283526. - CVE-2026-49265: Oauthlib: Timing Attack Vulnerability in PKCE codeverifier Comparison...

CVE-2026-107503

In Eclipse Ditto versions 3.6.0 to 3.8.13 and 3.9.0 to 3.9.7, the Ditto Explorer UI loads its complete environment configuration, including the Ditto API URI and the OpenID Connect OIDC provider settings, from an arbitrary cross-origin URL supplied in the environmentsURL query parameter. It adopt...

Exploit for CVE-2026-59358

abraxaslabs.tech · github.com/abraxas ·&...

CVE-2026-105119

OpenAM before 16.1.3 applies its OAuth2 Provider PKCE enforcement only to authorization requests whose responsetype is exactly code, so codes issued through OpenID Connect hybrid flows code token, code idtoken, code token idtoken carry no bound challenge. An attacker who intercepts such a code ca...

CVE-2026-105119 OpenAM before 16.1.3 PKCE Enforcement Bypass via OAuth 2.0 Hybrid Flows

OpenAM before 16.1.3 applies its OAuth2 Provider PKCE enforcement only to authorization requests whose responsetype is exactly code, so codes issued through OpenID Connect hybrid flows code token, code idtoken, code token idtoken carry no bound challenge. An attacker who intercepts such a code ca...