CVE-2025-61728

Excessive CPU consumption when building archive index in archive/zip

Published Jan 28, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
archive/zip uses a super-linear file name indexing algorithm that is invoked the first time a file in an archive is opened. This can lead to a denial of service when consuming a maliciously constructed ZIP archive.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Golang
Golang go
CPEs cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
Vendors & Products Golang
Golang go
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Go Standard Library
Go Standard Library archive/zip
Vendors & Products Go Standard Library
Go Standard Library archive/zip
Type Values Removed Values Added
Description archive/zip uses a super-linear file name indexing algorithm that is invoked the first time a file in an archive is opened. This can lead to a denial of service when consuming a maliciously constructed ZIP archive.
Title Excessive CPU consumption when building archive index in archive/zip
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Go
Published
Updated
Jan 29, 2026, 6:30 PM
Reserved
Sep 30, 2025, 3:05 PM
Status
Analyzed
Published
Jan 28, 2026, 8:16 PM
Modified
Jun 17, 2026, 9:50 AM
Severity
Moderate
Public date
Jan 28, 2026, 7:30 PM