CVE-2026-59251: Erlang OTP

Denial of service via exponential certificate policy tree growth in path validation

CVSS 8.7 HighEPSS 0.0032 · 24th percentile

Published by the CVE Program (CNA: EEF) at 27 Jul 2026, 15:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Erlang	OTP Package name: public_key pkg:otp/public_key?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git	affected 1.15 to before * otp Other versions: unaffected
Erlang	OTP Package name: erlang/otp https://github.com pkg:github/erlang/otp	affected 26.2 to before * otp affected 9d1dda7bad5a64b58c10a1554751689e94131a73 to before * git Other versions: unaffected

Identifiers

CVE-2026-59251

CNA

EEF

Weakness (CWE)

CWE-770

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.7	High	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L	CNA (EEF)

CISA KEV Not listed.
EPSS 0.0032, the 24th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 27 Jul 2026. New records show when each source confirmed them.

Sources

References from the CNA

github.com/erlang/otp/security/advisories/GHSA-622p-qfh6-c352 vendor-advisoryrelated
cna.erlef.org/cves/CVE-2026-59251.html related
osv.dev/vulnerability/EEF-CVE-2026-59251 related
www.erlang.org/doc/system/versions.html#order-of-versions version-scheme
github.com/erlang/otp/commit/f8580fc117098c08165f46c26fd0750c5cfb2a90 patch
github.com/erlang/otp/commit/f04c6bba38de1cf1b1836a7d9a9fbe239bd939e8 patch

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.