CVE-2026-27710

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.

PUBLISHED Reserved 2026-02-23 | Published 2026-02-25 | Updated 2026-02-26 | Assigner GitHub_M

Problem types

CWE-191: Integer Underflow (Wrap or Wraparound)

Product status

References

github.com/...anaZip/security/advisories/GHSA-89qw-8p49-32wf exploit

github.com/...anaZip/security/advisories/GHSA-89qw-8p49-32wf

cve.org (CVE-2026-27710)

nvd.nist.gov (CVE-2026-27710)

Download JSON