Description
Relative Path Traversal, Improper Isolation or Compartmentalization vulnerability in erlang otp erlang/otp (tftp_file modules), erlang otp inets (tftp_file modules), erlang otp tftp (tftp_file modules) allows Relative Path Traversal. This vulnerability is associated with program files lib/tftp/src/tftp_file.erl, src/tftp_file.erl. This issue affects OTP from OTP 17.0 before OTP 28.3.2, OTP 27.3.4.8 and OTP 26.2.5.17, corresponding to tftp from 1.0 before 1.2.4, 1.2.2.1 and 1.1.1.1; also inets from 5.10 before 7.0.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Erlang OTP
Default version status: unaffected
17.0 to < *affected07b8f441ca711f9812fad9e9115bab3c3aa92f79 to < *affected
pkg:github/erlang/otpErlang OTP
Default version status: unaffected
5.10 to < 7.0affected
pkg:otp/inets?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.gitErlang OTP
Default version status: unaffected
1.0 to < *affected
pkg:otp/tftp?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.gitReferences
- https://github.com/erlang/otp/security/advisories/GHSA-hmrc-prh3-rpvp ↗
- https://cna.erlef.org/cves/CVE-2026-21620.html ↗
- https://osv.dev/vulnerability/EEF-CVE-2026-21620 ↗
- https://www.erlang.org/doc/system/versions.html#order-of-versions ↗
- https://github.com/erlang/otp/pull/10706 ↗
- https://github.com/erlang/otp/commit/696fdec922661d4a3cc528fc34bc24fae8d4ad8a ↗
- https://github.com/erlang/otp/commit/3970738f687325138eb75f798054fa8960ac354e ↗
- https://github.com/erlang/otp/commit/655fb95725ba2fb811740b57e106873833824344 ↗