What is CVE-2026-32136?

CVE-2026-32136 is a critical-severity vulnerability in Adguardteam Adguardhome, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-03-11.

How severe is CVE-2026-32136?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2026-32136 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Adguardteam Adguardhome

CVE-2026-32136

AdGuard Home is a network-wide software for blocking ads and tracking. Prior to 0.107.73, an unauthenticated remote attacker can bypass all authentication in AdGuardHome by sending an HTTP/1.1 request that requests an upgrade to HTTP/2 cle…

Vulnerability class: Broken Authentication

EPSS: 0.009 (76.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Adguardteam Adguardhome — versions < 0.107.73

Weakness classification (CWE)

CWE-287 — Improper Authentication

Public proof-of-concept exploits

0xdak/CVE-2026-32136_exploit

References

https://github.com/AdguardTeam/AdGuardHome/security/advisories/GHSA-5fg6-wrq4-w5gh (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-32136?: CVE-2026-32136 is a critical-severity vulnerability in Adguardteam Adguardhome, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-03-11.
How severe is CVE-2026-32136?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2026-32136 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.