Stored-field disclosure via atomic confirmation error
Published Sep 1, 2026 · Updated Sep 1, 2026
Information disclosure in Ash 2.17.20 through 3.32.1 allows attackers to read a stored field value through an atomic confirmation error. Ash.Resource.Validation.Confirm.atomic/2 resolves the omitted field through atomic_ref/2 and places its current stored value in the mismatch error. Exploitation requires an application action that uses atomic confirmation for a sensitive attribute and exposes the resulting error to the attacker.
Summary
What happened
Information disclosure in Ash 2.17.20 through 3.32.1 allows attackers to read a stored field value through an atomic confirmation error. Ash.Resource.Validation.Confirm.atomic/2 resolves the omitted field through atomic_ref/2 and places its current stored value in the mismatch error. Exploitation requires an application action that uses atomic confirmation for a sensitive attribute and exposes the resulting error to the attacker.
The record
- CVE
- CVE-2026-82739
- Published
- Sep 1, 2026
- Updated
- Sep 1, 2026
- Vendor
- Ash Framework
- Product
- Ash
- Classifications
- CWE-209, CAPEC-54
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 1, 2026CVE publishedPublication date reported by the CVE source.
- Sep 1, 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=2.17.20 <3.32.2
- Affected versionversion=fadecf3ee95640bd3bc7298df4799e0375537fd2 <7dfe5f0b1ba4267580ded947dc861351d4dc8e2b
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
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
- Atomic Confirm sensitive-value disclosure reproductionproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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