CVE-2026-30956 describes a critical authorization and tenant isolation bypass vulnerability in OneUptime v10.0.20 and earlier. A low-privileged attacker can exploit this by forging specific HTTP headers, bypassing internal permission checks to access other tenants' data, leak sensitive information, and achieve full account takeover. This vulnerability carries a CVSS score of 9.9 (Critical) due to its network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion. Organizations using affected versions should upgrade to OneUptime 10.0.21 or later to mitigate this risk.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 10.0.21CPE matchmatch criteria | cpe:2.3:a:hackerbay:oneuptime:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 1.0 Bluesky, 0.5 Mastodon, and 1.6 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.