CVE-2026-49356
CSIRTS triage
- What
- An arbitrary file read can occur via sourceMappingURL comments.
- Who is affected
- Users of Babel that utilize sourceMappingURL.
- Urgency
- Remediation is low urgency due to a low severity rating of 3.2.
- Action
- Consider updating Babel to mitigate the risk.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
Advisory coverage (1)
External references
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[](https://www.csirts.com/cve/CVE-2026-49356)