Prototype pollution via unsafe inherited-property traversal
Published Jul 13, 2026 · Updated Jul 13, 2026
Prototype pollution in PrimeTek Informatics PrimeReact 10.9.0 through 10.9.8 allows remote authenticated users to modify Object.prototype. The ObjectUtils.mutateFieldData API dot-splits a caller-controlled field, follows inherited properties, and assigns the supplied value without blocking dangerous prototype segments. Exploitation requires a consuming application to pass attacker-controlled field names into the API; polluted values then affect new objects and inherited-property checks.
Summary
What happened
Prototype pollution in PrimeTek Informatics PrimeReact 10.9.0 through 10.9.8 allows remote authenticated users to modify Object.prototype. The ObjectUtils.mutateFieldData API dot-splits a caller-controlled field, follows inherited properties, and assigns the supplied value without blocking dangerous prototype segments. Exploitation requires a consuming application to pass attacker-controlled field names into the API; polluted values then affect new objects and inherited-property checks.
The record
- CVE
- CVE-2026-15538
- Published
- Jul 13, 2026
- Updated
- Jul 13, 2026
- Vendor
- PrimeTek Informatics
- Product
- PrimeReact
- Classifications
- CWE-94, CWE-1321
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 13, 2026CVE publishedPublication date reported by the CVE source.
- Jul 13, 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=10.9.0
- Affected versionversion=10.9.1
- Affected versionversion=10.9.2
- Affected versionversion=10.9.3
- Affected versionversion=10.9.4
- Affected versionversion=10.9.5
- Affected versionversion=10.9.6
- Affected versionversion=10.9.7
- Affected versionversion=10.9.8
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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