CVE-2026-73804Public exploitNetwork attack vectorHinoki check available

Scope escalation via unscoped HTTP Signature authentication

Published Oct 14, 2026 · Updated Oct 14, 2026

Authorization bypass in Gitea 1.26.4 and earlier allows remote authenticated users to exceed API token scopes via HTTP Signature. HTTPSign.Verify() authenticates an enrolled SSH key without assigning ApiTokenScope, and tokenRequiresScopes() skips enforcement when that scope is absent. Exploitation requires a write:user token and permission to manage SSH keys; resulting data access and changes remain limited by the account's normal role and repository permissions.

CVSS severity8.1
High
EPSS probability0.42%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Authorization bypass in Gitea 1.26.4 and earlier allows remote authenticated users to exceed API token scopes via HTTP Signature. HTTPSign.Verify() authenticates an enrolled SSH key without assigning ApiTokenScope, and tokenRequiresScopes() skips enforcement when that scope is absent. Exploitation requires a write:user token and permission to manage SSH keys; resulting data access and changes remain limited by the account's normal role and repository permissions.

The record

CVE
CVE-2026-73804
Published
Oct 14, 2026
Updated
Oct 14, 2026
Vendor
Gitea
Product
Gitea
Classifications
CWE-863, CWE-266, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.26.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Gitea · Giteaversion=0 <=1.26.4

Published CVSS scores

8.1GiteaCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
CWE-266Incorrect Privilege Assignment
T1098Account Manipulation

Public exploit references

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Technologies

Your stack

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Your stack

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