CVE-2026-39819

mediumpriority · track · 21EPSS 0.002 · 7 %ileDEEUFRRUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.18% (7th) EPSS

CVSS 5.3 · medium

Is it mine?

43 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp"). An attacker with access to the temporary directory can create a symlink in one of these names, causing "go bug" to overwrite the target of the symlink.

cvss

Technical severity, 0–10. One row per scoring source.

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.3mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:Nprimary · NVD / NIST USexploitability 1 · impact 4.2

v3.15.3mediumAV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.15.3mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:Nsecondary · ENISA EU

v3.15.3mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:Nsecondaryexploitability 1 · impact 4.2

v3.14.9mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-59USprimaryCWE-59US

affected products (43)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Google Container-Optimized OSall versionscert_bundDEcpe:/o:google:container-optimized_os:-
IBM Business Automation Workflowall versionscert_bundDEcpe:/a:ibm:business_automation_workflow:-
IBM MQ Operatorall versionscert_bundDEcpe:/a:ibm:mq:operator
Microsoft Azure Linux azl3all versionscert_bundDEcpe:/o:microsoft:azure_linux:azl3
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
RESF Rocky Linuxall versionscert_bundDEcpe:/o:resf:rocky_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat Enterprise Linux Advanced Cluster Management for Kubernetesall versionscert_bundDEcpe:/o:redhat:enterprise_linux:advanced_cluster_management_for_kubernetes
Red Hat Enterprise Linux Advanced Cluster Securityall versionscert_bundDEcpe:/o:redhat:enterprise_linux:advanced_cluster_security
Red Hat Enterprise Linux Edge Managerall versionscert_bundDEcpe:/o:redhat:enterprise_linux:edge_manager
Red Hat Enterprise Linux MicroShiftall versionscert_bundDEcpe:/o:redhat:enterprise_linux:microshift
Red Hat Enterprise Linux Multicluster Engine for Kubernetesall versionscert_bundDEcpe:/o:redhat:enterprise_linux:multicluster_engine_for_kubernetes
Red Hat OpenShift API for Data Protectionall versionscert_bundDEcpe:/a:redhat:openshift:api_for_data_protection
Red Hat OpenShift Container Platformall versionscert_bundDEcpe:/a:redhat:openshift:container_platform
Red Hat OpenShift OpenStack Servicesall versionscert_bundDEcpe:/a:redhat:openshift:openstack_services
Red Hat OpenShift loggingall versionscert_bundDEcpe:/a:redhat:openshift:logging
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-

showing 20 of 43

advisories (5)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1437Golang Go: Mehrere SchwachstellenDeutsch2026-05-07csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Golang Go ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Daten zu manipulieren, Cross-Site-Scripting-Angriffe durchzuführen, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.
WID-SEC-W-2026-2455Oracle Solaris Drittanbieterkomponenten: Mehrere SchwachstellenDeutsch2026-07-21csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in verschiedenen Komponenten von Drittanbietern in Oracle Solaris ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.
BIT-golang-2026-39819Invoking "go bug" follows symlinks in predictable temporary filenames in cmd/go2026-05-11vendor · osvUS
The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp"). An attacker with access to the temporary directory can create a symlink in one of these names, causing "go bug" to overwrite the target of the symlink.
CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
GO-2026-4978Invoking "go bug" follows symlinks in predictable temporary filenames in cmd/go2026-05-07vendor · osvUS
The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp"). An attacker with access to the temporary directory can create a symlink in one of these names, causing "go bug" to overwrite the target of the symlink.

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv cert_bund certfr NVD CVE.org MITRE

published 2026-05-07modified 2026-07-07

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+2367 more

references (10)

External citations — patches, advisories, analysis.

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