Vulnerability Intelligence Report
Gitea Docker image trusts spoofable reverse-proxy headers by default
CVE-2026-20896
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.
Nuclei Template
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:0.78%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-284 ↗CWE-284
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Gitea | Gitea Open Source Git Server | 0 <= 1.26.2 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Gitea Limited · Open Source · China |
| Reserved | 2026-03-03T03:25:59 |
| Published | 2026-07-03T20:19:29 |
| Last Updated | 2026-07-07T17:00:46 |
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