CVE-2026-18952
Missing input validation in the threat intelligence feed parser in the OpenSearch Security Analytics plugin might allow an authenticated remote user to perform server-side request forgery and read local files via a crafted URL parameter to the threat intel source configuration endpoint.
CSIRTS triage
- What
- Missing input validation in threat intelligence feed parser allows authenticated users with specific roles to perform SSRF and read local files via crafted URL parameters.
- Who is affected
- OpenSearch Security Analytics Plugin v2.15.0+ and AWS OpenSearch Service domains running engine v2.15.0+.
- Urgency
- High; authenticated SSRF and file disclosure in security plugin poses significant data exposure risk.
- Action
- Upgrade to OpenSearch Security Analytics Plugin v3.5.0+ or apply AWS service software update for managed deployments.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.38% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all EPSS-scored CVEs.
Advisory coverage (2)
External references
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[](https://www.csirts.com/cve/CVE-2026-18952)