GitHub Advisoryadvisory · Hex

GHSA-rwcr-rpcc-3g9m elixir-nodejs has Cross-User Data Leakage or Information Disclosure due to Worker Protocol Race Condition

HIGH Published 2026-03-26 Modified 2026-03-27 Official page ↗
Aliases
CVE-2026-33872
Ecosystem
Hex
Packages
nodejs
Severity
High
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weaknesses
CWE-362
Reviewed
2026-03-26

Affected packages

• Hex nodejs: < 3.1.4 → fixed in 3.1.4

Description

Impact This vulnerability results in Cross-User Data Leakage or Information Disclosure due to a race condition in the worker protocol. The lack of request-response correlation creates a "stale response" vulnerability. Because the worker does not verify which request a response belongs to, it may return the next available data in the buffer to an unrelated caller. In high-throughput environments where the library processes sensitive user data (e.g., PII, authentication tokens, or private records), a timeout or high concurrent load can cause Data A (belonging to User A) to be returned to User B. This may lead to unauthorized information disclosure that is difficult to trace, as the application may not throw an error but instead provide "valid-looking" yet entirely incorrect and private data to the wrong session. Patches fixed in v3.1.4 Resources https://github.com/revelrylabs/elixir-nodejs/issues/100 https://github.com/revelrylabs/elixir-nodejs/pull/105

Related

Alias · CVE (1)

  • CVE-2026-33872 elixir-nodejs provides an Elixir API for calling Node.js functions. vulnerability

Weakness · CWE (1)

  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness

References