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Findings

CVE-2026-105283

Internal error terms inspected into AshTypescript RPC error responses

Published Oct 12, 2026 · corrected/updated Oct 12, 2026 · evidence confidence high

## Summary Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash_typescript allows an unauthenticated attacker to read internal Elixir terms from an RPC error response by provoking an error the error builder has no dedicated clause for. in renders a pipeline error term that matches no specific clause with and places the result in of the client-facing error. Ash exceptions take a separate path in where unhandled cases are redacted behind an , but these fallbacks have no redaction, so whatever the term carries reaches the HTTP or channel response. Two request paths hand it such terms: a struct-typed action argument with an invalid nested value, where in throws the raw cast error into the builder, and field selection on a generic action that returns a primitive, where inspects the full struct into . Resource module names in are not treated as sensitive and are out of scope. This issue affects ash_typescript: from 0.1.0 before 0.19.1. ## Details **1. Error funnel.** runs the request through , and . Any from these goes to , which calls with the raw reason term. **2. Unredacted fallbacks.** has clauses for the error tuples the pipeline is expected to emit. A two-tuple whose first element is an atom but matches no clause is rendered as with set to , and any other term becomes with set to . Ash exceptions never reach these clauses because handles them and redacts unhandled ones behind an , so only this path has no redaction. **3. Reachable triggers.** throws the raw error, a keyword list, when a struct-typed argument fails to cast, and turns the throw into for the funnel. Separately, requesting on a generic action whose return type is a primitive produces an tuple whose is formatted by , which inspects the whole struct, constraints and decoration included, into . ## Proof of concept 1. Expose an AshTypescript RPC action that takes a struct-typed argument, for example an argument whose struct has a UUID field. 2. Send the action reques

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2026-105283 is a unknown public vulnerability record for this product. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether this product is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: ash_typescript (0.1.0 → 0.19.1). Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: EPSS 0.3%. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-209. Sources contributing to this record: cve_org, epss, github, osv. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Patch and remediation

    No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 12, 2026 · GitHub Advisory Database

    Detected

    ## Summary Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash_typescript allows an unauthenticated attacker to read internal Elixir terms from an RPC error response by provoking an error the error builder has no dedicated clause for. in renders a pipeline error term that matches no specific clause with and places the result in of the client-facing error.

  2. Oct 12, 2026 · GitHub Advisory Database

    Fix available

    ash_typescript fixed in 0.19.1

  3. Oct 12, 2026 · GitHub Advisory Database

    Fix available

    ash_typescript fixed in 0.19.1

  4. Oct 12, 2026 · GitHub Advisory Database

    Updated

    ## Summary Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash_typescript allows an unauthenticated attacker to read internal Elixir terms from an RPC error response by provoking an error the error builder has no dedicated clause for. in renders a pipeline error term that matches no specific clause with and places the result in of the client-facing error.

Affected

  • Hex ash_typescript0.1.0 → 0.19.1

Sources

References