Admin-session compromise via unescaped relationship labels
Published Aug 31, 2026 · Updated Aug 31, 2026
Stored XSS in Ash Project AshAdmin 0.13.0 through 1.3.0 allows remote authenticated users to execute script in an administrator's browser. Two relationship typeahead components wrap matched label_field text in bold tags and pass the entire attacker-controlled label to Phoenix.HTML.raw/1 without escaping it. Exploitation requires a less-trusted user to write a displayed label and an administrator to search for that record, after which the script can read, modify, or delete resources exposed through the admin session.
Summary
What happened
Stored XSS in Ash Project AshAdmin 0.13.0 through 1.3.0 allows remote authenticated users to execute script in an administrator's browser. Two relationship typeahead components wrap matched label_field text in bold tags and pass the entire attacker-controlled label to Phoenix.HTML.raw/1 without escaping it. Exploitation requires a less-trusted user to write a displayed label and an administrator to search for that record, after which the script can read, modify, or delete resources exposed through the admin session.
The record
- CVE
- CVE-2026-77850
- Published
- Aug 31, 2026
- Updated
- Aug 31, 2026
- Vendor
- Ash Project
- Product
- AshAdmin
- Classifications
- CWE-79, CAPEC-592, T1059.007
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 31, 2026CVE publishedPublication date reported by the CVE source.
- Aug 31, 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=0.13.0 <1.3.1
- Affected versionversion=eb940f4d7d857ca49368ae847f586d01c6f5ad35 <07289191ccdac27dd70ab7c6413ed057bc7fdade
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
- AshAdmin stored-XSS proof of conceptfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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