CVE-2026-55388
CVE-2026-55388: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh8.1
High [CVE-2026-55388] Arbitrary code execution via prototype pollution of filename option
CVE-2026-55388Source published Source updated
piscina is a node.js worker pool implementation. Prior to 6.0.0-rc.2, 5.2.0, and 4.9.3, piscina's constructor and run() paths read the filename option via plain member access. Both reads fall through the prototype chain when the caller's options object doesn't have filename as an own property. When Object.prototype.filename is polluted upstream the inherited value flows to worker_threads. Worker import and the attacker's.mjs runs in the worker. This vulnerability is fixed in 6.0.0-rc.2, 5.2.0, and 4.9.3. This vulnerability allows an attacker to achieve arbitrary code execution by exploiting a prototype pollution issue. By manipulating the `filename` option, an attacker can cause their malicious code to be executed within the worker, potentially compromising the system's confidentiality…
- Affected products in this advisory
- No product details extracted. Check the source bulletin.
- Source-reported affected versions
- < 6.0.0-rc
- < 5.2.0
- < 4.9.3
- Source-reported fixed versions
- 6.0.0
- 5.2.0
- 4.9.3
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
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