CVE-2026-21620

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
UNKNOWN
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Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/erlang/otp/commit/3970738f687325138eb75f798054fa8960ac354e
https://github.com/erlang/otp/commit/655fb95725ba2fb811740b57e106873833824344
https://github.com/erlang/otp/commit/696fdec922661d4a3cc528fc34bc24fae8d4ad8a
https://github.com/erlang/otp/pull/10706
https://github.com/erlang/otp/security/advisories/GHSA-hmrc-prh3-rpvp
https://www.erlang.org/doc/system/versions.html#order-of-versions