CVE-2026-86193Public exploitNetwork attack vector

Super-admin takeover via direct-access-only target guards

Published Sep 5, 2026 · Updated Sep 8, 2026

Incorrect authorization in GetGrav Grav API Plugin before 1.0.20 allows remote authenticated users to take over super-admin accounts. UsersController target guards inspect the account's own access map instead of resolving effective permissions inherited from groups. Exploitation requires api.access and api.users.write plus a victim whose super authority comes only from group membership, yielding full administrative control.

CVSS severity8.7
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in GetGrav Grav API Plugin before 1.0.20 allows remote authenticated users to take over super-admin accounts. UsersController target guards inspect the account's own access map instead of resolving effective permissions inherited from groups. Exploitation requires api.access and api.users.write plus a victim whose super authority comes only from group membership, yielding full administrative control.

The record

CVE
CVE-2026-86193
Published
Sep 5, 2026
Updated
Sep 8, 2026
Vendor
GetGrav
Product
Grav API Plugin
Classifications
CWE-863, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 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 <1.0.20

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GetGrav · Grav API Pluginversion=0 <1.0.20

Published CVSS scores

8.7GitHub Security AdvisoryCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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 exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1098Account 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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