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Response snapshot Oct 26, 2026, 22:41 UTC

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VulnerabilityCVE-2026-73804

Gitea allows a token with write:user scope to register an attacker-controlled SSH public key on the token owner's account.

Gitea allows a token with write:user scope to register an attacker-controlled SSH public key on the token owner's account.

At a glance

Exploited
Not known
Severity
8.1 High (CVSS 3.1)
Chance of exploitation
0.5% in the next 30 days
Sources
1 source

What to do

Check the vendor advisory for affected versions and fixes.

Read NVD CVE-2026-73804 (opens a new tab)

What happened

Gitea allows a token with write:user scope to register an attacker-controlled SSH public key on the token owner's account. API requests signed with the corresponding private key authenticate as that account through HTTP Signature without API token scope information, causing route-level token scope checks to be skipped. This converts a user-scoped token into an unscoped API authentication method while retaining the account's normal role and repository permissions.

Scores and how they were measured

CVSS base severity

8.1

Version 3.1As of

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

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

0.5%

Scored Percentile 40.9%

Model and measurement source (opens a new tab)

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Sources

  1. Primary source

    NVD CVE-2026-73804 (opens a new tab)

    NVD record: description, CVSS (the CNA score is preferred), affected products, and publication date. Not evidence of exploitation.

    Published Checked

  2. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

  3. Primary source

    FIRST measured EPSS score (opens a new tab)

    Measured EPSS probability and percentile for CVE-2026-73804, scored 2026-10-26. This is a model estimate, not proof of exposure.

    Published Checked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, October 18). Gitea allows a token with write:user scope to register an attacker-controlled SSH public key on the token owner's account. (CVE-2026-73804). https://kevwire.com/record/CVE-2026-73804

MLA

"Gitea allows a token with write:user scope to register an attacker-controlled SSH public key on the token owner's account. (CVE-2026-73804)." KEVWire, 18 Oct. 2026, kevwire.com/record/CVE-2026-73804.

Chicago

KEVWire. "Gitea allows a token with write:user scope to register an attacker-controlled SSH public key on the token owner's account. (CVE-2026-73804)." Last modified October 18, 2026. https://kevwire.com/record/CVE-2026-73804.

Evidence summary (plain text)

Gitea allows a token with write:user scope to register an attacker-controlled SSH public key on the token owner's account. (Oct 14, 2026).
Gitea allows a token with write:user scope to register an attacker-controlled SSH public key on the token owner's account. API requests signed with the corresponding private key authenticate as that account through HTTP Signature without API token scope information, causing route-level token scope checks to be skipped. This converts a user-scoped token into an unscoped API authentication method while retaining the account's normal role and repository permissions.
CVSS 8.1 (version 3.1; evidence as of Oct 18, 2026; https://nvd.nist.gov/vuln/detail/CVE-2026-73804).
EPSS 0.5% for the following 30 days, scored Oct 26, 2026 (https://api.first.org/data/v1/epss?cve=CVE-2026-73804&date=2026-10-26).
Sources:
NVD CVE-2026-73804: https://nvd.nist.gov/vuln/detail/CVE-2026-73804
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?pubStartDate=2026-10-12T13:35:55.142Z&pubEndDate=2026-10-26T13:35:55.142Z&resultsPerPage=500&startIndex=3000
FIRST measured EPSS score: https://api.first.org/data/v1/epss?cve=CVE-2026-73804&date=2026-10-26
Record ID: CVE-2026-73804.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Oct 26, 2026, 19:40 UTC. Ingestion is not an independent editorial investigation.

NVD status: Deferred. Publication in the NVD is not evidence of exploitation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

Record JSON

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Record details

Record detail