CVE-2026-56876
extract-zip unvalidated symlink path traversal
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.
INFO
Published Date :
June 26, 2026, 6:17 p.m.
Last Modified :
July 6, 2026, 1:25 p.m.
Remotely Exploit :
Yes !
Source :
9119a7d8-5eab-497f-8521-727c672e3725
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 9119a7d8-5eab-497f-8521-727c672e3725 | |||||
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | 9119a7d8-5eab-497f-8521-727c672e3725 | ||||
| CVSS 4.0 | HIGH | 9119a7d8-5eab-497f-8521-727c672e3725 |
Solution
- Update extract-zip to validate symlink targets.
- Avoid extracting archives from untrusted sources.
- Sanitize archive contents before extraction.
Public PoC/Exploit Available at Github
CVE-2026-56876 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-56876.
| URL | Resource |
|---|---|
| https://github.com/ziad626/extract-zip-security-research/security/advisories/GHSA-x7jf-2287-qcpf | Exploit Third Party Advisory |
| https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-177-01.json | Third Party Advisory |
| https://www.cve.org/CVERecord?id=CVE-2026-56876 | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-56876 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-56876
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Offical PoC for this cve
JavaScript
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-56876 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-56876 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 06, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:max-mapper:extract-zip:*:*:*:*:*:node.js:*:* versions up to (including) 2.0.1 Added Reference Type Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government: https://github.com/ziad626/extract-zip-security-research/security/advisories/GHSA-x7jf-2287-qcpf Types: Exploit, Third Party Advisory Added Reference Type Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-177-01.json Types: Third Party Advisory Added Reference Type Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government: https://www.cve.org/CVERecord?id=CVE-2026-56876 Types: Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 30, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-56876', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-30T19:58:59.934746Z'} -
New CVE Received by 9119a7d8-5eab-497f-8521-727c672e3725
Jun. 26, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'max-mapper', 'product': 'extract-zip', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '*', 'versionType': 'custom'}], 'defaultStatus': 'affected'}] Added SSVC {'id': 'CVE-2026-56876', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-23T15:08:40.844368Z'} Added Tag unsupported-when-assigned Added 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. Added CVSS V4.0 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:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Added CWE CWE-22 Added CWE CWE-61 Added Reference https://github.com/ziad626/extract-zip-security-research/security/advisories/GHSA-x7jf-2287-qcpf Added Reference https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-177-01.json Added Reference https://www.cve.org/CVERecord?id=CVE-2026-56876