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Gitea allows attackers to add attachments with forbidden file extensions

High severity GitHub Reviewed Published Dec 26, 2025 to the GitHub Advisory Database • Updated Dec 26, 2025

Package

code.gitea.io/gitea (Go)

Affected versions

< 1.23.0

Patched versions

None

Description

Gitea before 1.23.0 allows attackers to add attachments with forbidden file extensions by editing an attachment name via an attachment API.

References

Published by the National Vulnerability Database Dec 26, 2025
Published to the GitHub Advisory Database Dec 26, 2025
Reviewed Dec 26, 2025
Last updated Dec 26, 2025

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(12th percentile)

Weaknesses

Improper Protection of Alternate Path

The product does not sufficiently protect all possible paths that a user can take to access restricted functionality or resources. Learn more on MITRE.

CVE ID

CVE-2025-68939

GHSA ID

GHSA-263q-5cv3-xq9g

Source code

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