| Name | CVE-2026-21620 |
| 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 17.0, from 07b8f441ca711f9812fad9e9115bab3c3aa92f79; otp: from 5.10 before 7.0; otp: from 1.0. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| erlang (PTS) | bullseye | 1:23.2.6+dfsg-1+deb11u1 | vulnerable |
| bullseye (security) | 1:23.2.6+dfsg-1+deb11u3 | vulnerable | |
| bookworm | 1:25.2.3+dfsg-1+deb12u3 | vulnerable | |
| bookworm (security) | 1:25.2.3+dfsg-1+deb12u1 | vulnerable | |
| trixie | 1:27.3.4.1+dfsg-1 | vulnerable | |
| forky, sid | 1:27.3.4.6+dfsg-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| erlang | source | (unstable) | (unfixed) |
https://github.com/erlang/otp/security/advisories/GHSA-hmrc-prh3-rpvp
https://github.com/erlang/otp/pull/10706
Fixed by (merge): https://github.com/erlang/otp/commit/696fdec922661d4a3cc528fc34bc24fae8d4ad8a (OTP-28.3.2)
Fixed by (merge): https://github.com/erlang/otp/commit/3970738f687325138eb75f798054fa8960ac354e (OTP-27.3.4.8)
Fixed by (merge): https://github.com/erlang/otp/commit/655fb95725ba2fb811740b57e106873833824344 (OTP-26.2.5.17)