CVE-2026-61449Public exploitNetwork attack vector

Service interruption via forged ZIP size metadata

Published Jul 15, 2026 · Updated Jul 15, 2026

Decompression-bomb bypass in Grav 2.0.1 allows attackers to interrupt service through a crafted ZIP archive supplied for extraction. ZipArchiver and GPM\Installer trust each entry's forgeable central-directory size, so extractTo() can inflate far more data than the pre-extraction cap counted. A package source or administrator must supply the archive, and successful exploitation fills disk space or exhausts inodes.

CVSS severity7.1
High
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Decompression-bomb bypass in Grav 2.0.1 allows attackers to interrupt service through a crafted ZIP archive supplied for extraction. ZipArchiver and GPM\Installer trust each entry's forgeable central-directory size, so extractTo() can inflate far more data than the pre-extraction cap counted. A package source or administrator must supply the archive, and successful exploitation fills disk space or exhausts inodes.

The record

CVE
CVE-2026-61449
Published
Jul 15, 2026
Updated
Jul 15, 2026
Vendor
Grav
Product
Grav
Classifications
CWE-409, T1499.004
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 15, 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 <2.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Grav · Gravversion=0 <2.0.2

Published CVSS scores

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

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-409Improper Handling of Highly Compressed Data (Data Amplification)
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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