extract-zip unvalidated symlink path traversal (max-mapper extract-zip)

CVE-2026-56876
HIGH 8.6

At a glance

Source
NVD
EPSS
EPSS 0.53 % · percentile 45 ()
State
PUBLISHED
Published
Updated
Assigner
cisa-cg
NVD status
Analyzed

Description

extract-zip does not validate symlink targets when extracting zip archives. When processing a malicious zip file containing a symlink with a relative path like '../../../../etc/passwd', extract-zip will extract the symlink without validation, allowing it to point outside the extraction directory. Depending on how extract-zip is used, an attacker could read or write to arbitrary files.

Weaknesses (CWE)

  • CWE-22 — Improper Limitation of a Pathname to a Restricted Directory
  • CWE-61 — UNIX Symbolic Link (Symlink) Following

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 8.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Ncisa-cg
CVSS 4.0HIGH 8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:Ncisa-cg
CVSS 4.0HIGH 8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XNVD · 9119a7d8-5eab-497f-8521-727c672e3725 (Secondary)
CVSS 3.1HIGH 8.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:NNVD · 9119a7d8-5eab-497f-8521-727c672e3725 (Secondary)

Advisories

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
max-mapper · extract-zipaffected 0 < *

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD