CVE-2025-4748: Absolute path traversal in zip:unzip/1,2

Severity: medium (CVSS 4.8 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-16 · updated 2026-07-24
Weakness: CWE-22

Description

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.

Affected products

Erlang OTP: from 2.0; from 17.0

References

https://cna.erlef.org/cves/CVE-2025-4748.html
https://github.com/erlang/otp/commit/578d4001575aa7647ea1efd4b2b7e3afadcc99a5
https://github.com/erlang/otp/commit/5a55feec10c9b69189d56723d8f237afa58d5d4f
https://github.com/erlang/otp/commit/ba2f2bc5f45fcfd2d6201ba07990a678bbf4cc8f
https://github.com/erlang/otp/pull/9941
https://github.com/erlang/otp/security/advisories/GHSA-9g37-pgj9-wrhc
https://osv.dev/vulnerability/EEF-CVE-2025-4748
https://www.erlang.org/doc/system/versions.html#order-of-versions
http://www.openwall.com/lists/oss-security/2025/06/16/5

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