CVE-2026-28282 is a medium-severity vulnerability in the discourse-policy plugin affecting Discourse versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2. This flaw allows a low-privileged user with policy creation permissions to gain unauthorized membership to private or restricted groups. This leads to a high confidentiality impact, as the user can then access sensitive topics within those groups. With a CVSS score of 6.5, the vulnerability has a network attack vector and low attack complexity. Currently, there is no evidence of active exploitation, nor is any public exploit code or significant community discussion available.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 2026.1.0, < 2026.1.2CPE matchmatch criteria | cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:* | ||
>= 2026.2.0, < 2026.2.1CPE matchmatch criteria | cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:* | ||
2026.3.0CPE matchmatch criteria | cpe:2.3:a:discourse:discourse:2026.3.0:*:*:*:latest:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.