SEPTEMBER 17, 2026
Live Feed
Back to database
Case File

CVE-2026-86112

MEDIUM · CVSS 5.4 EPSS 0.18% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-05 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The vulnerability allows authenticated attackers to manipulate the Favorite and Unfavorite functionalities in BookWyrm versions up to 0.9.1, enabling them to interact with followers-only and direct statuses that should be inaccessible. This can lead to unauthorized interactions, potential exposure of private status IDs, and unwanted ActivityPub broadcasts. Organizations using affected versions should prioritize patching to mitigate the risk of unauthorized data exposure and interaction.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-86112
Severity
MEDIUM
CVSS
5.4
EPSS
0.18%

Original NVD Description

BookWyrm through 0.9.1 fails to validate user visibility permissions in the Favorite and Unfavorite views, allowing authenticated attackers to favorite or unfavorite followers-only and direct statuses they cannot access. Attackers can POST to the favorite endpoint with a status ID to create unauthorized interactions, trigger ActivityPub broadcasts, and enumerate private status IDs through response differentiation.