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 double free issue has been identified in libarchive's RAR5 reader. During parsing of a specially crafted RAR5 archive, the filtered_buf pointer may remain stale after being freed during unpacking state reinitialization. Subsequent processing of another archive entry can trigger a second free of the same memory region, resulting in a double-free condition. Successful exploitation may cause applications using the vulnerable libarchive API to terminate unexpectedly, leading to a denial of service.
| 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 | NVD | 7.5 | 3.9 | 3.6 |
| 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 | — | — |