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CVE Vulnerability Details :
CVE-2026-61449
PUBLISHED
More InfoOfficial Page
Assigner-VulnCheck
Assigner Org ID-83251b91-4cc7-4094-a5c7-464a1b83ea10
View Known Exploited Vulnerability (KEV) details
Published At-15 Jul, 2026 | 11:25
Updated At-15 Jul, 2026 | 17:52
Rejected At-
▼CVE Numbering Authority (CNA)
Grav before 2.0.2 Decompression Bomb via Forged ZIP Size

Grav 2.0.1 contains a decompression-bomb size-cap bypass in ZipArchiver and GPM\Installer. The size bound introduced in 2.0.1 sums the uncompressed size declared in each entry's ZIP central-directory header (ZipArchive::statIndex()['size']) and rejects archives exceeding system.gpm.archive.max_uncompressed_size before extraction. Because this declared size is attacker-forgeable and is not cross-checked against the actual inflated stream, a crafted archive declaring tiny per-entry sizes passes the cap while extractTo() writes the real, much larger content, filling disk or exhausting inodes. The archive must be supplied by a package source or admin upload (admin/operator trust). Fixed in 2.0.2. This is an incomplete fix for GHSA-928x-9mpw-8h56.

Affected Products
Vendor
getgrav
Product
grav
Default Status
unaffected
Versions
Affected
  • From 0 before 2.0.2 (semver)
Unaffected
  • 2.0.2 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-409Improper Handling of Highly Compressed Data (Data Amplification)
Type: CWE
CWE ID: CWE-409
Description: Improper Handling of Highly Compressed Data (Data Amplification)
Metrics
VersionBase scoreBase severityVector
4.07.1HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Version: 4.0
Base score: 7.1
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

reporter
iliaal
Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/getgrav/grav/security/advisories/GHSA-8h9x-89f2-m7x3
vendor-advisory
https://www.vulncheck.com/advisories/grav-before-decompression-bomb-via-forged-zip-size
third-party-advisory
Hyperlink: https://github.com/getgrav/grav/security/advisories/GHSA-8h9x-89f2-m7x3
Resource:
vendor-advisory
Hyperlink: https://www.vulncheck.com/advisories/grav-before-decompression-bomb-via-forged-zip-size
Resource:
third-party-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/getgrav/grav/security/advisories/GHSA-8h9x-89f2-m7x3
exploit
Hyperlink: https://github.com/getgrav/grav/security/advisories/GHSA-8h9x-89f2-m7x3
Resource:
exploit
Details not found