CVE-2026-34758 is a critical vulnerability in OneUptime (hackerbay oneuptime) versions prior to 10.0.42, allowing unauthenticated access to notification test and phone number management endpoints. This flaw enables SMS/Call/Email/WhatsApp abuse and unauthorized phone number purchases, posing a significant risk to confidentiality and integrity. Rated with a CVSS score of 9.1 (Critical), it has a low attack complexity and requires no user interaction, making it easily exploitable by remote attackers. Currently, there is no evidence of active exploitation or public exploit code, though it has generated some community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 10.0.40CPE matchmatch criteria | cpe:2.3:a:hackerbay:oneuptime:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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.