Is CVE-2026-20912 in the CISA KEV catalog?

No. CVE-2026-20912 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-20912?

CVE-2026-20912 has a CVSS v3 base score of 9.1 (CRITICAL).

What is the EPSS score for CVE-2026-20912?

CVE-2026-20912 has an EPSS score of 0.41% (34th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-20912?

Upgrade gitea to 1.25.4 or later.

CVE & CISA-KEV Catalog

CVE-2026-20912

CRITICAL

9.1

CVSS v3

NVD

Description

Gitea does not properly validate repository ownership when linking attachments to releases. An attachment uploaded to a private repository could potentially be linked to a release in a different public repository, making it accessible to unauthorized users.

CWE-284Improper Access Control CWE-639Authorization Bypass Through User-Controlled Key CWE-283

How to fix

Remediation Available

giteaNVD

Affected:< 1.25.4Fixed in:1.25.4CVE-2026-20912derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.41%probability of exploitation in 30 days

34thpercentile

Low risk: more likely to be exploited than 34% of all known CVEs.

References

Patch2

Release Notes2

Other references4

Related Vulnerabilities

Other CWE-284 (Improper Access Control) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-27350	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2019-1653	High	7.5	100%	KEV	-
CVE-2023-23752	Medium	5.3	100%	KEV	Fix
CVE-2023-38205	High	7.5	100%	KEV	-
CVE-2023-29298	High	7.5	100%	KEV	-
CVE-2024-27348	Critical	9.8	99%	KEV	Fix

Embed a live status badge for CVE-2026-20912

Markdown

[![CVE-2026-20912](https://tridentstack.com/cve/badge/CVE-2026-20912.svg)](https://tridentstack.com/cve/CVE-2026-20912)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-20912"><img src="https://tridentstack.com/cve/badge/CVE-2026-20912.svg" alt="CVE-2026-20912"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-15.