NVD / CVE Program· CNA GitHub_M

CVE-2026-34758: OneUptime: Missing Authentication on Notification Endpoints

Noroxi assessment

Priority: Monitor (action score 36/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.35% (FIRST EPSS).
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
Fixed version: OneUptime oneuptime 10.0.42.

Low priority for now. Upgrade to OneUptime oneuptime 10.0.42 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

CriticalCVSS 9.1 · v3.1—No exploit Fix available

Published: Apr 2, 2026
Updated: Oct 6, 2026
EPSS: 0.3% · 29th percentile
CWE: CWE-306

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 36 / 40 · 9.1 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.3%

CISA SSVC decision

Exploitation: proof of concept
Automatable: yes
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · GitHub_M: 9.1; NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
hackerbay	oneuptime	cpe:2.3:a:hackerbay:oneuptime

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

hackerbay oneuptimebefore 10.0.40

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

OneUptime oneuptime
- < 10.0.42affected

Same product

hackerbay: all records

Other highest-scoring records for the same primary product.

CVE-2026-33396OneUptime has sandbox escape in Synthetic Monitor Playwright runtime allows project members to execute arbitrary commands on Probe
39Monitor
CVE-2026-32306OneUptime ClickHouse SQL Injection via Aggregate Query Parameters
39Monitor
CVE-2026-30957OneUptime Synthetic Monitor RCE via exposed Playwright browser object
39Monitor

Published before and after this one in the same product

← EarlierCVE-2026-33142Mar 20, 2026 · OneUptime: ClickHouse SQL Injection via unvalidated column identifiers in sort, select, and groupBy parameters
32Monitor
← EarlierCVE-2026-33143Mar 20, 2026 · OneUptime: WhatsApp Webhook Missing Signature Verification
34Monitor
Later →CVE-2026-34759Apr 2, 2026 · OneUptime: Unauthenticated notification API endpoints - financial abuse via phone number purchase, service disruption, and SMTP credential exposure
36Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
OneUptime oneuptime	10.0.42 · description	Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

OneUptime/oneuptimecommit 9adbd04

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-350530 days apartOneUptime: Unauthenticated Workflow Execution via ManualAPI
36Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

CVE-2026-333967 days apartOneUptime has sandbox escape in Synthetic Monitor Playwright runtime allows project members to execute arbitrary commands on Probe
39Monitor
CVE-2026-3230620 days apartOneUptime ClickHouse SQL Injection via Aggregate Query Parameters
39Monitor
CVE-2026-3314213 days apartOneUptime: ClickHouse SQL Injection via unvalidated column identifiers in sort, select, and groupBy parameters
32Monitor
CVE-2026-3230820 days apartOneUptime: Stored XSS via Mermaid Diagram Rendering (securityLevel: "loose")
30Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: none

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: None

Weakness class (CWE)

CWE-306 · Missing Authentication for Critical Function

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

nvd-secondary

Root cause

A function added for development or support ships to production without authentication. It often relies on the assumption that it is “only reachable from the internal network.”

The bug in code

The whole CWE-306 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1// Added for the support team
2app.post("/maintenance/reset", resetDevice);

Fixed

1if (config.maintenanceEnabled) {
2  app.post(
3    "/maintenance/reset",
4    requireSession, requireRole("admin"), resetDevice
5  );
6}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

Fix✗ → ✓Sep 29, 2026, 11:55 AM UTC

For records you follow, these changes also arrive as notifications. →

References

github.com/OneUptime/oneuptime/commit/9adbd04538714740506708d6fa610e433be4d2a4

Show all references (1 more)

github.com/OneUptime/oneuptime/releases/tag/10.0.42

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records