Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the Vend OAuth2 backend used only the numeric Vend user_id as the social-auth UID. When multiple Vend shops authenticate through the same application, users from different shops with the same internal Vend user ID could collide in the social-auth association table. A user from one shop could then be authenticated as the local account previously associated with the same numeric user ID from another shop. The issue affects applications using the Vend OAuth2 backend with more than one Vend shop. Version 5.0.0 patches the issue.
Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, sites using wildcard patterns in the allowed_iframes setting could accept a crafted iframe URL whose allowlisted suffix appeared after a URL authority separator. The wildcard origin check matched the allowed domain text, while browser URL parsing selected a different attacker-controlled origin. A user with posting privileges could exploit the flaw through a post or a Onebox oEmbed response and cause an attacker-controlled iframe to be rendered independently of the allowlisted domain. Successful exploitation requires a site-configured wildcard iframe pattern and the ability to create a post or trigger an oEmbed request for an attacker-controlled URL. This issue is fixed in versions 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0.
A heap buffer overflow vulnerability exists in the DTLS handshake fragment reassembly logic of GnuTLS. The issue arises in merge_handshake_packet() where incoming handshake fragments are matched and merged based solely on handshake type, without validating that the message_length field remains consistent across all fragments of the same logical message. An attacker can exploit this by sending crafted DTLS fragments with conflicting message_length values, causing the implementation to allocate a buffer based on a smaller initial fragment and subsequently write beyond its bounds using larger, inconsistent fragments. Because the merge operation does not enforce proper bounds checking against the allocated buffer size, this results in an out-of-bounds write on the heap. The vulnerability is remotely exploitable without authentication via the DTLS handshake path and can lead to application crashes or potential memory corruption.
| Version | Type | Source | Base | Exp | Imp |
|---|---|---|---|---|---|
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Primary | cve.org | 7.5 | — | — |
| 3.1 | Secondary | NVD | 7.5 | 3.9 | 3.6 |
| 3.1 | Secondary | ENISA EUVD | 7.5 | — | — |
| 3.1 | Secondary | NVD | 7.5 | 3.9 | 3.6 |