CVE-2026-27710

MEDIUM

NanaZip 5.0.1252.0-6.0.1637.0 - DoS

Title source: llm

Description

NanaZip is an open source file archive. Starting in version 5.0.1252.0 and prior to versions 6.0.1638.0 and 6.5.1638.0, a denial-of-service vulnerability exists in NanaZip’s `.NET Single File Application` parser. A crafted bundle can force an integer underflow in header-size calculation and trigger an unbounded memory allocation attempt during archive open. Versions 6.0.1638.0 and 6.5.1638.0 fix the issue.

References (1)

[Vendor Advisory] https://github.com/M2Team/NanaZip/security/advisories/GHSA-89qw-8p49-32wf

Scores

CVSS v3 5.0

EPSS 0.0001

EPSS Percentile 2.1%

Attack Vector LOCAL

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

Classification

CWE

CWE-191

Status published

Affected Products (1)

m2team/nanazip < 6.0.1638.0

Timeline

Published Feb 26, 2026

Tracked Since Feb 26, 2026