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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-21620 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  EEF
CVSS-B 2.3 LOW
Vector:  CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://cna.erlef.org/cves/CVE-2026-21620.html EEF
https://github.com/erlang/otp/commit/3970738f687325138eb75f798054fa8960ac354e EEF
https://github.com/erlang/otp/commit/655fb95725ba2fb811740b57e106873833824344 EEF
https://github.com/erlang/otp/commit/696fdec922661d4a3cc528fc34bc24fae8d4ad8a EEF
https://github.com/erlang/otp/pull/10706 EEF
https://github.com/erlang/otp/security/advisories/GHSA-hmrc-prh3-rpvp EEF
https://osv.dev/vulnerability/EEF-CVE-2026-21620 EEF
https://www.erlang.org/doc/system/versions.html#order-of-versions EEF

Weakness Enumeration

CWE-ID CWE Name Source
CWE-23 Relative Path Traversal EEF  

Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-21620
NVD Published Date:
02/20/2026
NVD Last Modified:
07/24/2026
Source:
EEF