In short
- CVE-2026-56876 is a HIGH (CVSS 8.1) vulnerability affecting extract-zip (max-mapper), extract-zip.
- Chance of exploitation in the next 30 days (EPSS): 0.53%, higher than 44.8% of all vulnerabilities.
- No patched version is listed yet: follow the vendor's advisory in References.
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.
NVD 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.
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