CVE-2026-84205Network attack vectorHinoki check available

Unauthorized revision disclosure via mismatched page identifiers

Published Sep 1, 2026 · Updated Sep 2, 2026

Authorization bypass in GROWI 8.0.2 and earlier allows remote authenticated users to read revisions from pages they cannot access. GET /_api/v3/revisions/:id checks permission for the pageId query value but fetches the revision named by the independent path value without verifying its owning page. Any authenticated account with access to one page can pair that page identifier with another page's revision identifier, exposing revision content but not modifying it.

CVSS severity7.1
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Authorization bypass in GROWI 8.0.2 and earlier allows remote authenticated users to read revisions from pages they cannot access. GET /_api/v3/revisions/:id checks permission for the pageId query value but fetches the revision named by the independent path value without verifying its owning page. Any authenticated account with access to one page can pair that page identifier with another page's revision identifier, exposing revision content but not modifying it.

The record

CVE
CVE-2026-84205
Published
Sep 1, 2026
Updated
Sep 2, 2026
Vendor
WESEEK, Inc.
Product
GROWI
Classifications
CWE-639, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 2, 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=0 <=8.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WESEEK, Inc. · GROWIversion=0 <=8.0.2

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
7.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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