CVE-2026-61455

high

Description

Grav before 2.0.1 contains a decompression bomb vulnerability in ZipArchiver::extract() that lacks limits on uncompressed size, file count, and nesting depth. Attackers can supply a crafted ZIP archive that expands to fill available disk space, causing denial of service by exhausting storage resources.

References

https://www.vulncheck.com/advisories/grav-before-decompression-bomb-via-ziparchiver

https://github.com/getgrav/grav/security/advisories/GHSA-928x-9mpw-8h56

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-42904

Details

Source: Mitre, NVD

Published: 2026-07-10

Updated: 2026-10-25

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium

CVSS v4

Base Score: 7.1

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Severity: High

EPSS

EPSS: 0.00301