HOMEVULNERABILITIESCVE-2026-42355
MEDIUM

CVE-2026-42355

CWE-674Published: May 12, 2026· Updated: May 18, 2026

5.5
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:2.3th

Official Description

NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, an uncontrolled recursion vulnerability exists in the Electron Archive (ASAR) parser in NanaZip. When opening a crafted .asar file with deeply nested JSON in the header, both nlohmann::json::parse and the handler's GetAllPaths function recurse without depth limits, exhausting the thread stack and crashing the NanaZip process. This vulnerability is fixed in 6.0.1698.0.

NVD Source

Technical Analysis

CVE-2026-42355 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected Vendors & Products

m2team1 product
nanazip
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/M2Team/NanaZip/security/advisories/GHSA-4gxf-p4q6-gfrf

All References (1)

→
https://github.com/M2Team/NanaZip/security/advisories/GHSA-4gxf-p4q6-gfrfMitigation · Vendor Advisory

Quick Facts

CVE IDCVE-2026-42355
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-674
CISA KEVNo
EPSS (30d)0.01%
Affected1 vendor
PublishedMay 12, 2026

Related CVEs (CWE-674)

CVE-2026-25971
9.8
CVE-2026-40324
9.1
CVE-2026-41673
8.7
CVE-2026-25048
8.7
CVE-2026-8936
8.2
CVE-2026-44028
7.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-42355 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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