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npm

CVE-2026-109869

undici vulnerable to Denial of Service via unhandled error on excessive content-encodings

Severity: High 7.5
Published: 23 Oct 2026
Last changed: 23 Oct 2026
Added to UpHeron: 24 Oct 2026
Fixed in: 6.29.1, 7.30.1, 8.12.2
Also known as: GHSA-xjj6-f33q-929c
Sources: OSV.dev and GitHub

Affected software

Software	Affected versions
undicinpm · `osv:npm:undici`	From 6.23.0 before 6.29.1 From 7.18.0 before 7.30.1 From 8.0.0 before 8.12.2

References

CVE.org https://www.cve.org/CVERecord?id=CVE-2026-109869
GitHub Advisory Database https://github.com/advisories/GHSA-xjj6-f33q-929c