undici vulnerable to Denial of Service via orphaned RetryHandler response body

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.0048, the 42nd percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 4 Sept 2026, 14:22 UTC Published by the maintainers as a GitHub repository advisory
2. 31 Oct 2026, 13:34 UTC First seen by agentprime
3. 31 Oct 2026, 13:34 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-pmjh-fq2x-6v4x
• OSV: GHSA-pmjh-fq2x-6v4x
• github.com/nodejs/undici/security/advisories/GHSA-pmjh-fq2x-6v4x
• nvd.nist.gov/vuln/detail/CVE-2026-18149
• github.com/nodejs/undici/commit/3c6726599cea8646384dde846c97d630da472a74
• github.com/nodejs/undici/commit/e905b5b87e6953bcc542af90557b2fee5b7b5974
• hackerone.com/reports/3892751
• cna.openjsf.org/security-advisories.html
• github.com/nodejs/undici
• github.com/nodejs/undici/releases/tag/v7.29.1
• github.com/nodejs/undici/releases/tag/v8.10.2

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.