Absolute path traversal in zip:unzip/1,2
## Summary Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Erlang OTP (stdlib modules) allows Absolute Path Traversal, File Manipulation. This vulnerability is associated with program files lib/stdlib/src/zip.erl and program routines zip:unzip/1, zip:unzip/2, zip:extract/1, zip:extract/2 unless the memory option is passed. This issue affects OTP from OTP 17.0 before OTP 28.0.1, OTP 27.3.4.1 and OTP 26.2.5.13, corresponding to stdlib from 2.0 before 7.0.1, 6.2.2.1 and 5.2.3.4. ## Workarounds You can use zip:list\_dir/1 on the archive and verify that no files contain absolute paths before extracting the archive to disk.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-4748US | — | — | ||
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Erlang OTP (stdlib modules) allows Absolute Path Traversal, File Manipulation. This… | ||||
references
External citations — patches, advisories, analysis.
- https://cna.erlef.org/cves/CVE-2025-4748.htmlWEB
- https://github.com/erlang/otp/commit/578d4001575aa7647ea1efd4b2b7e3afadcc99a5FIX
- https://github.com/erlang/otp/commit/5a55feec10c9b69189d56723d8f237afa58d5d4fFIX
- https://github.com/erlang/otp/commit/ba2f2bc5f45fcfd2d6201ba07990a678bbf4cc8fFIX
- https://github.com/erlang/otp/pull/9941FIX
- https://github.com/erlang/otp/security/advisories/GHSA-9g37-pgj9-wrhcADVISORY
- https://www.erlang.org/doc/system/versions.html#order-of-versionsWEB
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