GO-2026-5495

Source
https://pkg.go.dev/vuln/GO-2026-5495
Import Source
https://vuln.go.dev/ID/GO-2026-5495.json
JSON Data
https://api.osv.dev/v1/vulns/GO-2026-5495
Aliases
Published
2026-06-25T22:34:31Z
Modified
2026-06-25T23:01:18.246988261Z
Summary
Mattermost doesn't validate CSRF tokens on an authentication endpoint in github.com/mattermost/mattermost-server
Details

Mattermost doesn't validate CSRF tokens on an authentication endpoint in github.com/mattermost/mattermost-server

Database specific
{
    "review_status": "UNREVIEWED",
    "url": "https://pkg.go.dev/vuln/GO-2026-5495"
}
References

Affected packages

Go
github.com/mattermost/mattermost-server

Package

Name
github.com/mattermost/mattermost-server
View open source insights on deps.dev
Purl
pkg:golang/github.com/mattermost/mattermost-server

Affected ranges

Type
SEMVER
Events
Introduced
11.3.0-rc1+incompatible
Fixed
11.3.3+incompatible
Introduced
11.4.0-rc1+incompatible
Fixed
11.4.3+incompatible
Introduced
11.5.0-rc1+incompatible
Fixed
11.5.0+incompatible

Database specific

source
"https://vuln.go.dev/ID/GO-2026-5495.json"
github.com/mattermost/mattermost-server/v5

Package

Name
github.com/mattermost/mattermost-server/v5
View open source insights on deps.dev
Purl
pkg:golang/github.com/mattermost/mattermost-server/v5

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected

Database specific

source
"https://vuln.go.dev/ID/GO-2026-5495.json"
github.com/mattermost/mattermost-server/v6

Package

Name
github.com/mattermost/mattermost-server/v6
View open source insights on deps.dev
Purl
pkg:golang/github.com/mattermost/mattermost-server/v6

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected

Database specific

source
"https://vuln.go.dev/ID/GO-2026-5495.json"
github.com/mattermost/mattermost/server/v8

Package

Name
github.com/mattermost/mattermost/server/v8
View open source insights on deps.dev
Purl
pkg:golang/github.com/mattermost/mattermost/server/v8

Affected ranges

Type
SEMVER
Events
Introduced
8.0.0-20250721062209-4952acea88ce
Fixed
8.0.0-20260220133927-c29cf05d40f8

Database specific

source
"https://vuln.go.dev/ID/GO-2026-5495.json"