CVE-2026-47078
Fixed in a distro release EPSS <1%CVSS 4.8
Relative Path Traversal vulnerability in Erlang OTP (stdlib zip module) allows writing files outside the intended extraction directory via a crafted zip archive. zip:unzip/1,2 and zip:extract/1,2 validate entry paths using zip:check_dir_level/2, which tracks directory depth as a running integer counter: .. decrements it, normal path components increment it. The caller rejects only paths where the final counter value is less than zero. A path such as ../x/y causes the counter to go negative mid-traversal then recover to zero, passing validation while resolving to a location outside the extraction directory when joined with the current working directory via add_cwd. This vulnerability is associated with program file lib/stdlib/src/zip.erl. This issue affects OTP from OTP 27.1 before OTP 27.3.4.15, OTP 28.5.0.4, and OTP 29.0.4, corresponding to stdlib from 6.1 before 6.2.2.4, 7.3.0.1, and 8.0.3.
Products: erlang otp
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | erlang | no fix |
| Debian 13 | erlang | 1:27.3.4.1+dfsg-1+deb13u3 |
| Debian 14 | erlang | 1:29.0.4+dfsg-1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | erlang | 23.3.4.19-150300.3.39.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | erlang | 23.3.4.19-150300.3.39.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | erlang | 23.3.4.19-150300.3.39.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | erlang | 23.3.4.19-150300.3.39.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | erlang | 23.3.4.19-150300.3.39.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | erlang26 | 26.2.1-150300.7.28.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | erlang | 23.3.4.19-150300.3.39.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | erlang | 23.3.4.19-150300.3.39.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | erlang | 23.3.4.19-150300.3.39.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | erlang26 | 26.2.1-150300.7.28.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | erlang | 23.3.4.19-150300.3.39.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | erlang | 23.3.4.19-150300.3.39.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | erlang | 23.3.4.19-150300.3.39.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | erlang26 | 26.2.1-150300.7.28.1 |
| Ubuntu 22.04 LTS | erlang | 1:24.2.1+dfsg-1ubuntu0.8 |
| Ubuntu 24.04 LTS | erlang | 1:25.3.2.8+dfsg-1ubuntu4.8 |
| Ubuntu 26.04 LTS | erlang | 1:27.3.4.6+dfsg-1ubuntu0.2 |
| Ubuntu Pro 14.04 LTS | erlang | no fix |
| Ubuntu Pro 14.04 LTS | erlang | 1:16.b.3-dfsg-1ubuntu2.2+esm3 |
| Ubuntu Pro 16.04 LTS | erlang | no fix |
| Ubuntu Pro 16.04 LTS | erlang | 1:18.3-dfsg-1ubuntu3.1+esm4 |
| Ubuntu Pro 18.04 LTS | erlang | 1:20.2.2+dfsg-1ubuntu2+esm4 |
| Ubuntu Pro 20.04 LTS | erlang | 1:22.2.7+dfsg-1ubuntu0.5+esm3 |
| openSUSE Tumbleweed | erlang | 28.5.0.4-1.1 |
| openSUSE Tumbleweed | erlang27 | 27.1.3-3.1 |