CVE-2026-96404

highpriority · track · 0EPSS 0.006 · 48 %ileDEUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.58% (48th) EPSS

CVSS 8.1 · high

Is it mine?

6 products

Check your exposure

Who says so?

3 sources

osv · cert_bund · nvd

EPSS · scored 2026-10-27

When Gitea's web installer is reachable against a database that already contains users, such as after `INSTALL_LOCK` has been reset to `false`, submitting the install form with an administrator username matching an existing account issued an authenticated session for that account without verifying its password. If the account is an administrator, the session grants full administrative access, including changing the account's password. Databases with a single user also did not require the reinstall confirmation.

cvss

Technical severity, 0–10. One row per scoring source.

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 2.2 · impact 5.9

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287US

affected products (6)

Products and version ranges known to be affected.

Open Source Gitea <28.0.0all versionscert_bundDE
Open Source Gitea <28.0.1all versionscert_bundDE
Open Source Gitea< 28.0.0cert_bundDE
Open Source Gitea< 28.0.1cert_bundDE
gitea gitea< 28.0.0nvdUScpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*
Bitnami gitea< 28.0.0osvUSpkg:bitnami/gitea

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3792Gitea: Mehrere SchwachstellenDeutsch2026-10-06csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Gitea ausnutzen, um beliebigen Programmcode auszuführen, erweiterte Berechtigungen zu erlangen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder offenzulegen sowie Cross-Site-Scripting-Angriffe durchzuführen.
BIT-gitea-2026-96404Gitea installer authentication bypass for existing accounts2026-10-14vendor · osvUS
When Gitea's web installer is reachable against a database that already contains users, such as after `INSTALL_LOCK` has been reset to `false`, submitting the install form with an administrator username matching an existing account issued an authenticated session for that account without verifying its password. If the account is an administrator, the session grants full administrative access, including changing the account's password. Databases with a single user also did not require the reinstall confirmation.

also known as (1)

Other names and identifiers for this entity.

GHSA-9h7g-h754-c8x2 osv

sources

Which sources assert this record, and when.

osv cert_bund nvd NVD CVE.org MITRE

published 2026-10-06modified 2026-10-13

references (4) nvd

External citations — patches, advisories, analysis.

https://blog.gitea.com/release-of-28.0.0/Release Notes
https://github.com/go-gitea/gitea/pull/39400Patch
https://github.com/go-gitea/gitea/releases/tag/v28.0.0Release Notes
https://github.com/go-gitea/gitea/security/advisories/GHSA-9h7g-h754-c8x2ExploitMitigationVendor Advisory

scry

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