CVE-2026-49439

MEDIUMPre-NVD 4.34.3
EchelonGraph scoreLOW confidence

This medium-severity CVE scores 4.3 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:github_m
4.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: —CVSS: 4.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

OpenRemote read-only asset users can write predicted datapoints

Summary

The predicted datapoint write endpoint allows users with only read:assets privileges to write predicted datapoints.

The endpoint:

PUT /api/{realm}/asset/predicted/{assetId}/{attributeName}

accepts write requests from users lacking write:assets.

The implementation appears to check READ_ASSETS while performing a write operation through:

assetPredictedDatapointService.updateValues(...)

PoC

A user was created with only:

read:assets

and without write:assets.

The following request succeeded:

PUT /api/master/asset/predicted/4Fr8Pcp7iDjrEmoSUFolvT/temperature

Request body:

[{"x":1779199999001,"y":1337}]

Response:

HTTP/2 204

Database verification confirmed the datapoint was written successfully:

entity_id: 4Fr8Pcp7iDjrEmoSUFolvT
attribute_name: temperature
value: 1337

Impact

Users with read-only asset permissions can modify predicted datapoints for assets.

CVSS v3
4.3
EG Score
4.3(low)
EPSS
—
KEV
Not listed

Published

July 6, 2026

Last Modified

July 6, 2026

Vendor Advisories for CVE-2026-49439(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 1× in last 7d / 1× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 17:22 UTCEG score recompute

Frequently asked(4)

What is CVE-2026-49439?
CVE-2026-49439 is a medium vulnerability published on July 6, 2026. OpenRemote read-only asset users can write predicted datapoints Summary The predicted datapoint write endpoint allows users with only read:assets privileges to write predicted datapoints. The endpoint: accepts write requests from users lacking write:assets. The implementation appears to check…
When was CVE-2026-49439 disclosed?
CVE-2026-49439 was first published in the National Vulnerability Database on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-49439?
CVE-2026-49439 has a CVSS v4.0 base score of 4.3 (CNA self-assessment; NVD's own analysis pending). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-49439?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49439, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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