CLSA-2026-1789640442

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Import Source
https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789640442.json
JSON Data
https://api.osv.dev/v1/vulns/CLSA-2026-1789640442
Upstream
Published
2026-09-17T10:20:53Z
Modified
2026-10-26T09:30:49Z
Summary
osbuild-composer: Fix of CVE-2026-39821
Details
  • CVE-2026-39821: reject xn-- Punycode labels that decode to an all-ASCII label in the vendored golang.org/x/net/idna, so ToASCII and ToUnicode no longer resolve names such as xn--example-.com to example.com without an error, preventing privilege escalation in programs that perform privilege checks on the ASCII hostname
  • CVE-2026-39821: rebuild against golang >= 1.22.9-1.el9_2.tuxcare.els19 so the copy of golang.org/x/net/idna vendored into the Go standard library, which net/http uses to convert outbound request hosts, carries the same rejection
References

Affected packages

TuxCare:AlmaLinux:9.2
osbuild-composer

Package

Name
osbuild-composer
Purl
pkg:rpm/tuxcare/osbuild-composer?distro=almalinux-9.2

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
76-2.el9_2.2.alma.tuxcare.els10

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789640442.json"
osbuild-composer-core

Package

Name
osbuild-composer-core
Purl
pkg:rpm/tuxcare/osbuild-composer-core?distro=almalinux-9.2

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
76-2.el9_2.2.alma.tuxcare.els10

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789640442.json"
osbuild-composer-dnf-json

Package

Name
osbuild-composer-dnf-json
Purl
pkg:rpm/tuxcare/osbuild-composer-dnf-json?distro=almalinux-9.2

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
76-2.el9_2.2.alma.tuxcare.els10

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789640442.json"
osbuild-composer-tests

Package

Name
osbuild-composer-tests
Purl
pkg:rpm/tuxcare/osbuild-composer-tests?distro=almalinux-9.2

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
76-2.el9_2.2.alma.tuxcare.els10

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789640442.json"
osbuild-composer-worker

Package

Name
osbuild-composer-worker
Purl
pkg:rpm/tuxcare/osbuild-composer-worker?distro=almalinux-9.2

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
76-2.el9_2.2.alma.tuxcare.els10

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789640442.json"