CVE-2026-25016Public exploitNetwork attack vector

Contributor-level popup publication via unchecked REST update

Published Feb 3, 2026 · Updated Feb 3, 2026

Missing authorization in Nelio Software Nelio Popups 1.3.5 and earlier allows remote authenticated users to publish or enable popups. The nelio_popups_is_enabled REST field update callback writes popup metadata without checking publish capability or post status, while save handling promotes draft popups to published status. Contributor-level access is sufficient, and the bounded consequence is unauthorized popup publication or activation rather than administrator access.

CVSS severity4.3
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Nelio Software Nelio Popups 1.3.5 and earlier allows remote authenticated users to publish or enable popups. The nelio_popups_is_enabled REST field update callback writes popup metadata without checking publish capability or post status, while save handling promotes draft popups to published status. Contributor-level access is sufficient, and the bounded consequence is unauthorized popup publication or activation rather than administrator access.

The record

CVE
CVE-2026-25016
Published
Feb 3, 2026
Updated
Feb 3, 2026
Vendor
Nelio Software
Product
Nelio Popups
Classifications
CWE-862, CAPEC-180, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=<= 1.3.5 changes=[{"at":"1.3.6","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Nelio Software · Nelio Popupsversion=n/a <=<= 1.3.5 changes=[{"at":"1.3.6","status":"unaffected"}]

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
CAPEC-180Exploiting Incorrectly Configured Access Control Security Levels
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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