Threat Intelligence / CVE / CVE-2026-20896

CVE-2026-20896

CVSS 9.8 (CRITICAL) · EPSS 0.8% · Priority 9/10 · Published 2026-07-03

As of 2026-07-05, CVE-2026-20896 is a CVSS 9.8 (CRITICAL-severity) vulnerability. Public exploit code available. EPSS exploitation probability 0.8%. Threadlinqs Intelligence tracks 1 threat exploiting it.

Last updated: 2026-07-05

Gitea Docker image versions up to and including 1.26.2 use REVERSE_PROXY_TRUSTED_PROXIES=* by default, allowing any source IP to impersonate a user when reverse-proxy authentication headers such as X-WEBAUTH-USER are enabled.

CVSS v3 vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-284

Exploitation status

public exploit code available

kaleth4/CVE-2026-20896 (github)
rz1027/CVE-2026-20896 (github)

Threats tracking this CVE

Threat Actors Mass-Probe Gitea Docker Deployments for CVE-2026-20896 Authentication Bypass Amid Exploitarium Zero-Day Leak Wave — CRITICAL

References

Full detection coverage & IOCs for threats exploiting CVE-2026-20896 are available via the Threadlinqs MCP server (Purple tier). View plans →

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Enriched from CVE.org, NVD (this product uses the NVD API but is not endorsed or certified by the NVD), FIRST EPSS, CISA KEV, and GitHub Security Advisories.