Vulnerability Description
Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash_typescript allows an unauthenticated attacker to receive unredacted internal error data by provoking an error shape the configured error handler does not match. apply_error_handler/3 in lib/ash_typescript/rpc/errors.ex is the only hook an application has for redacting or suppressing errors before they reach the client, with a nil return dropping the error entirely. Its rescue clause logs a warning and then returns the original, pre-handler error map. Error handlers are conventionally written as pattern-matching functions over expected error shapes, so an unmatched shape raises FunctionClauseError and the raw transformed error, including any secrets carried in vars, is emitted instead. An intent to suppress an error becomes an intent to publish it. The rescue catches exceptions only, so a handler that throws or exits still propagates. This issue affects ash_typescript: from 0.8.0 before 0.18.0.
Related Weaknesses (CWE)
References
- https://cna.erlef.org/cves/CVE-2026-77950.html
- https://github.com/ash-project/ash_typescript/commit/59d8e985a98cf2e01794dbe5b91
- https://github.com/ash-project/ash_typescript/security/advisories/GHSA-mjr7-r3rf
- https://osv.dev/vulnerability/EEF-CVE-2026-77950
- https://github.com/ash-project/ash_typescript/security/advisories/GHSA-mjr7-r3rf
FAQ
What is CVE-2026-77950?
CVE-2026-77950 is a documented vulnerability. Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash_typescript allows an unauthenticated attacker to receive unredacted internal error data by provoking an er...
How severe is CVE-2026-77950?
CVSS scoring is not yet available for CVE-2026-77950. Check NVD for updates.
Is there a patch for CVE-2026-77950?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.