CVE-2026-21620
Severity not reportedRelative Path Traversal, Improper Isolation or Compartmentalization vulnerability in erlang otp erlang/otp (tftp_file modules), erlang otp inets (tftp_file mod…
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 26.2.5.17, OTP 27.3.4.8, and OTP 28.3.2, corresponding to inets from 5.10 before 7.0, and tftp from 1.0 before 1.1.1.1, 1.2.2.1, and 1.2.4.
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://cna.erlef.org/cves/CVE-2026-21620.html 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
- https://github.com/erlang/otp/commit/07b8f441ca711f9812fad9e9115bab3c3aa92f79 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
- https://github.com/erlang/otp/commit/3970738f687325138eb75f798054fa8960ac354e 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
- https://github.com/erlang/otp/commit/655fb95725ba2fb811740b57e106873833824344 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
- https://github.com/erlang/otp/commit/696fdec922661d4a3cc528fc34bc24fae8d4ad8a 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
- https://github.com/erlang/otp/pull/10706 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
- https://github.com/erlang/otp/security/advisories/GHSA-hmrc-prh3-rpvp 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
- https://osv.dev/vulnerability/EEF-CVE-2026-21620 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
- https://www.erlang.org/doc/system/versions.html#order-of-versions 6b3ad84c-e1a6-4bf7-a703-f496b71e49db

