CVE-2026-75832Network attack vector

Cross-user file access via raw super-admin check

Published Aug 18, 2026 · Updated Aug 19, 2026

Authorization bypass in Grav API plugin before 1.0.14 allows remote authenticated users to write files and browse another user's scope. BlueprintPathResolver::resolveUserScope() treats the owning account's raw access.api.super flag as sufficient for users/ access and does not verify that the presented API key actually carries api.users.write. Exploitation requires an api.media.write-scoped key minted on a super-admin account and reaches GET /blueprint-files or POST /blueprint-upload; writes are bounded to image extensions in user/accounts/.

CVSS severity9.3
Critical
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Grav API plugin before 1.0.14 allows remote authenticated users to write files and browse another user's scope. BlueprintPathResolver::resolveUserScope() treats the owning account's raw access.api.super flag as sufficient for users/ access and does not verify that the presented API key actually carries api.users.write. Exploitation requires an api.media.write-scoped key minted on a super-admin account and reaches GET /blueprint-files or POST /blueprint-upload; writes are bounded to image extensions in user/accounts/.

The record

CVE
CVE-2026-75832
Published
Aug 18, 2026
Updated
Aug 19, 2026
Vendor
Grav
Product
Grav
Classifications
CWE-862
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 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 <1.0.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Grav · Gravversion=0 <1.0.14

Published CVSS scores

9.3VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
4.3VulnCheck CNACVSS: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization

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

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Your stack

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