OESA-2026-2703 (CVE-2026-21620)
Vulnerability from osv_openeuler – Published: 2026-06-24 11:11 – Updated: 2026-08-06 11:11 – Source websiteErlang is a general-purpose programming language and runtime environment. Erlang has built-in support for concurrency, distribution and fault tolerance. Erlang is used in several large telecommunication systems from Ericsson.
Security Fix(es):
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.(CVE-2026-21620)
| URL | Type | |
|---|---|---|
{
"affected": [
{
"ecosystem_specific": {
"aarch64": [
"erlang-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-asn1-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-common_test-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-compiler-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-crypto-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-debugger-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-debuginfo-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-debugsource-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-dialyzer-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-diameter-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-edoc-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-eldap-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-erl_docgen-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-erl_interface-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-erts-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-et-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-eunit-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-examples-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-ftp-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-inets-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-jinterface-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-kernel-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-megaco-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-mnesia-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-observer-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-odbc-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-os_mon-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-parsetools-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-public_key-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-reltool-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-runtime_tools-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-sasl-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-snmp-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-src-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-ssh-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-ssl-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-stdlib-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-syntax_tools-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-tftp-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-tools-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-wx-25.3.2.6-17.oe2403sp3.aarch64.rpm",
"erlang-xmerl-25.3.2.6-17.oe2403sp3.aarch64.rpm"
],
"src": [
"erlang-25.3.2.6-17.oe2403sp3.src.rpm"
],
"x86_64": [
"erlang-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-asn1-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-common_test-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-compiler-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-crypto-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-debugger-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-debuginfo-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-debugsource-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-dialyzer-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-diameter-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-edoc-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-eldap-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-erl_docgen-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-erl_interface-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-erts-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-et-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-eunit-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-examples-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-ftp-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-inets-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-jinterface-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-kernel-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-megaco-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-mnesia-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-observer-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-odbc-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-os_mon-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-parsetools-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-public_key-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-reltool-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-runtime_tools-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-sasl-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-snmp-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-src-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-ssh-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-ssl-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-stdlib-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-syntax_tools-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-tftp-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-tools-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-wx-25.3.2.6-17.oe2403sp3.x86_64.rpm",
"erlang-xmerl-25.3.2.6-17.oe2403sp3.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:24.03-LTS-SP3",
"name": "erlang",
"purl": "pkg:rpm/openEuler/erlang\u0026distro=openEuler-24.03-LTS-SP3"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "25.3.2.6-17.oe2403sp3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"severity": "Low"
},
"details": "Erlang is a general-purpose programming language and runtime\nenvironment. Erlang has built-in support for concurrency, distribution\nand fault tolerance. Erlang is used in several large telecommunication\nsystems from Ericsson.\r\n\r\n\nSecurity Fix(es):\n\nRelative 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.\n\nThis issue affects otp: from 17.0, from 07b8f441ca711f9812fad9e9115bab3c3aa92f79; otp: from 5.10 before 7.0; otp: from 1.0.(CVE-2026-21620)",
"id": "OESA-2026-2703",
"modified": "2026-08-06T11:11:38Z",
"published": "2026-06-24T11:11:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2703"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21620"
}
],
"schema_version": "1.7.2",
"severity": [
{
"score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
],
"summary": "erlang security update",
"upstream": [
"CVE-2026-21620"
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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