CVE-2026-59193Public exploitNetwork attack vector

Authenticated service interruption via unbounded ZIP extraction

Published Jul 10, 2026 · Updated Jul 10, 2026

Resource-exhaustion flaw in Grav before 2.0.0 allows remote authenticated users with admin.super access to crash the service via a ZIP upload. Installer::unZip passes Direct Install archives to ZipArchive::extractTo without bounding uncompressed bytes, entry count, or path depth. Exploitation requires an admin.super session and can exhaust disk space or inodes, overflow recursive cleanup, and interrupt service for all users.

CVSS severity6.9
Medium
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource-exhaustion flaw in Grav before 2.0.0 allows remote authenticated users with admin.super access to crash the service via a ZIP upload. Installer::unZip passes Direct Install archives to ZipArchive::extractTo without bounding uncompressed bytes, entry count, or path depth. Exploitation requires an admin.super session and can exhaust disk space or inodes, overflow recursive cleanup, and interrupt service for all users.

The record

CVE
CVE-2026-59193
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
Grav
Product
Grav
Classifications
CWE-409, CWE-674, T1499.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 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=>= 1.0.0, < 2.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Grav · Gravversion=>= 1.0.0, < 2.0.0

Published CVSS scores

6.9GitHub CNACVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-409Improper Handling of Highly Compressed Data (Data Amplification)
CWE-674Uncontrolled Recursion
T1499.004Application or System Exploitation

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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