P4Verified

CVE-2026-55103: discourse-activity-pub affected git revisions

CVE-2026-55103. CVSS 3.1 base score 8.6 (HIGH, Vendor/CNA).

Affected technology

discourse-activity-pub · < 1c8518b0f2abdf31cbea3e0b242f74d8994a9ba5
discourse

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

A remote attacker can exploit these missing identity and ownership checks to edit, delete, or reply to federated posts without the required permissions. Vendor/CNA’s CVSS 3.1 assessment (base score 8.6/10) rates confidentiality impact as high; integrity and availability impact as none.

Published 15-Oct-2026 18:54 UTC

CWE: CWE-345, CWE-863
CCR priority: 34.4 /100 (P4)
CVSS 3.1: 8.6 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N · Vendor/CNA
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-15 18:53:01.928580+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-55103.html