CVE-2026-96399

highpriority · track · 0EPSS 0.004 · 28 %ileDEUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.35% (28th) EPSS

CVSS 7.5 · high

Is it mine?

6 products

Check your exposure

Who says so?

3 sources

osv · cert_bund · nvd

EPSS · scored 2026-10-27

A repository's external issue tracker regular expression containing alternating capture groups could produce invalid slice indexes when Gitea rendered issue references, causing a runtime panic that terminated the Gitea process. A user who can edit a repository's external issue tracker settings could make any later rendering of matching content, such as viewing a README, crash the instance for all users.

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondaryexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125USCWE-248US

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-2026-96399Gitea denial of service through external issue tracker patterns2026-10-14vendor · osvUS
A repository's external issue tracker regular expression containing alternating capture groups could produce invalid slice indexes when Gitea rendered issue references, causing a runtime panic that terminated the Gitea process. A user who can edit a repository's external issue tracker settings could make any later rendering of matching content, such as viewing a README, crash the instance for all users.

also known as (1)

Other names and identifiers for this entity.

GHSA-mw6q-qj47-9g5q 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/39354Patch
https://github.com/go-gitea/gitea/releases/tag/v28.0.0Release Notes
https://github.com/go-gitea/gitea/security/advisories/GHSA-mw6q-qj47-9g5qVendor Advisory

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan