Arbitrary file write via unchecked event paths
Published Sep 8, 2026 · Updated Sep 10, 2026
Arbitrary file write in Okta Access Gateway before 2026.9.1 allows remote authenticated users to write files to unintended paths. The Kerberos configuration handler uses a file path from an event payload directly as the destination when writing supplied contents, without validating or constraining that path. Exploitation requires authenticated administrative network access or local access to /opt/oag/events and can overwrite files reachable by the appliance process.
Summary
What happened
Arbitrary file write in Okta Access Gateway before 2026.9.1 allows remote authenticated users to write files to unintended paths. The Kerberos configuration handler uses a file path from an event payload directly as the destination when writing supplied contents, without validating or constraining that path. Exploitation requires authenticated administrative network access or local access to /opt/oag/events and can overwrite files reachable by the appliance process.
The record
- CVE
- CVE-2026-78620
- Published
- Sep 8, 2026
- Updated
- Sep 10, 2026
- Vendor
- Okta
- Product
- Okta Access Gateway
- Classifications
- CWE-73
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 10, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <2026.9.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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