CVE-2026-0633Network attack vectorHinoki check available

Unauthenticated submission disclosure via forgeable cookie

Published Jan 24, 2026 · Updated Jan 24, 2026

Improper authentication in Roxnor MetForm 4.1.0 and earlier allows remote attackers to read recent form submission data via shortcodes. The entry-access cookie check accepts a value derived only from the entry ID and current user ID, without authenticating it with a server-side secret. Exploitation requires guessing an entry created within the transient lifetime, which defaults to 15 minutes; the reported impact is disclosure only.

CVSS severity3.7
Low
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper authentication in Roxnor MetForm 4.1.0 and earlier allows remote attackers to read recent form submission data via shortcodes. The entry-access cookie check accepts a value derived only from the entry ID and current user ID, without authenticating it with a server-side secret. Exploitation requires guessing an entry created within the transient lifetime, which defaults to 15 minutes; the reported impact is disclosure only.

The record

CVE
CVE-2026-0633
Published
Jan 24, 2026
Updated
Jan 24, 2026
Vendor
Roxnor
Product
MetForm
Classifications
CWE-287, T1606.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=* <=4.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Roxnor · MetFormversion=* <=4.1.0

Published CVSS scores

3.7WordfenceCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1606.001Forge Web Credentials: Web Cookies

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo