CVE-2026-23646 affects OpenProject versions prior to 16.6.5 and 17.0.1, allowing authenticated users to terminate other users' active sessions. The vulnerability stems from improper session ID validation, where incremental session IDs could be exploited via DELETE requests. With a CVSS score of 6.5 (Medium), this flaw has a low attack complexity and requires only low privileges, leading to high availability impact by unauthenticating users. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 16.6.5CPE matchmatch criteria | cpe:2.3:a:openproject:openproject:*:*:*:*:*:*:*:* | ||
17.0.0CPE matchmatch criteria | cpe:2.3:a:openproject:openproject:17.0.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.