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.
CVSS breakdown
CVSS 4.0
Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
Low
User Interaction
None
Confidentiality (Vulnerable System)
Low
Integrity (Vulnerable System)
Low
Availability (Vulnerable System)
None
Confidentiality (Subsequent System)
None
Integrity (Subsequent System)
None
Availability (Subsequent System)
None
Affected products
- erlang / erlang/otp
- erlang / OTP5.10 – 7.0
- erlang / OTP1.0 – *
References
- VENDOR_ADVISORYhttps://github.com/erlang/otp/security/advisories/GHSA-hmrc-prh3-rpvp
- MISChttps://cna.erlef.org/cves/CVE-2026-21620.html
- MISChttps://osv.dev/vulnerability/EEF-CVE-2026-21620
- MISChttps://www.erlang.org/doc/system/versions.html#order-of-versions
- PATCHhttps://github.com/erlang/otp/pull/10706
- PATCHhttps://github.com/erlang/otp/commit/696fdec922661d4a3cc528fc34bc24fae8d4ad8a
- PATCHhttps://github.com/erlang/otp/commit/3970738f687325138eb75f798054fa8960ac354e
- PATCHhttps://github.com/erlang/otp/commit/655fb95725ba2fb811740b57e106873833824344