HOMEVULNERABILITIESCVE-2026-34758
CRITICAL

CVE-2026-34758

CWE-306Published: April 2, 2026· Updated: Apr 3, 2026

9.1
CVSS v3.1
EPSS:0.03%probability of exploitation in 30 daysPercentile:8.4th

Official Description

OneUptime is an open-source monitoring and observability platform. Prior to version 10.0.42, unauthenticated access to Notification test and Phone Number management endpoints allows SMS/Call/Email/WhatsApp abuse and phone number purchase. This issue has been patched in version 10.0.42.

NVD Source

Technical Analysis

CVE-2026-34758 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected Vendors & Products

hackerbay1 product
oneuptime
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/OneUptime/oneuptime/commit/9adbd04538714740506708d6fa610e433be4d2a4
ADVISORYhttps://github.com/OneUptime/oneuptime/security/advisories/GHSA-q253-6wcm-h8hp
ADVISORYhttps://github.com/OneUptime/oneuptime/security/advisories/GHSA-q253-6wcm-h8hp

All References (4)

→
https://github.com/OneUptime/oneuptime/commit/9adbd04538714740506708d6fa610e433be4d2a4Patch
→
https://github.com/OneUptime/oneuptime/releases/tag/10.0.42Release Notes
→
https://github.com/OneUptime/oneuptime/security/advisories/GHSA-q253-6wcm-h8hpExploit · Mitigation · Vendor Advisory
→
https://github.com/OneUptime/oneuptime/security/advisories/GHSA-q253-6wcm-h8hpExploit · Mitigation · Vendor Advisory

Quick Facts

CVE IDCVE-2026-34758
CVSS Score9.1 / 10
SeverityCRITICAL
WeaknessCWE-306
CISA KEVNo
EPSS (30d)0.03%
Affected1 vendor
PublishedApr 2, 2026

Related CVEs (CWE-306)

CVE-2026-44327
10.0
CVE-2026-23693
10.0
CVE-2026-46803
10.0
CVE-2026-46846
10.0
CVE-2026-35301
10.0
CVE-2026-9152
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-34758 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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