# CVE-2025-68939: Gitea allows attackers to add attachments with forbidden file extensions

> Attackers can upload files with forbidden extensions by manipulating attachment names, potentially leading to code execution or security bypass.

- **Severity:** High 8.2 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 26 Dec 2025
- **Updated:** 26 Dec 2025
- **Also known as:** BIT-gitea-2025-68939, GHSA-263q-5cv3-xq9g, GO-2025-4261

## What is CVE-2025-68939?

CVE-2025-68939 is a high-severity vulnerability in Gitea Gitea, published on 26 Dec 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

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

Weakness: CWE-424 (Improper Protection of Alternate Path)

## Which versions are affected by CVE-2025-68939?

4 open source packages ship an affected version, including code.gitea.io/gitea and gitea. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `code.gitea.io/gitea` | Go | All versions | None |
| `code.gitea.io/gitea` | Go | All versions | None |
| `code.gitea.io/gitea` | Go | All versions | None |
| `gitea` | Bitnami | All versions | 1.23.0 |

Products: Gitea Gitea.

## How do I fix CVE-2025-68939?

Upgrade to a fixed version.

## Is CVE-2025-68939 being exploited?

There is no known exploitation of CVE-2025-68939 in the wild and no public exploit code.

## Other vulnerabilities in Gitea Gitea

- [CVE-2026-60004](https://insights.sbomify.com/CVE-2026-60004/): Gitea Code Injection (critical 9.8, exploited in the wild)
- [CVE-2026-73278](https://insights.sbomify.com/CVE-2026-73278/): Gitea WebAuthn bypass during OAuth and OIDC sign-in (critical 9.8)
- [CVE-2026-94205](https://insights.sbomify.com/CVE-2026-94205/): Gitea fork workflow approval bypass through maintainer-triggered events (critical 9.8)
- [CVE-2022-42968](https://insights.sbomify.com/CVE-2022-42968/): Gitea vulnerable to Argument Injection (critical 9.8)
- [CVE-2021-45330](https://insights.sbomify.com/CVE-2021-45330/): Improper Privilege Management in Gitea (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-68939 and fix it if it is affected.

What it is: CVE-2025-68939 is a high-severity vulnerability in Gitea Gitea, published on 26 Dec 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-68939 in the wild and no public exploit code.

Affected packages and fixed versions:
- code.gitea.io/gitea (Go): affected all versions; no fix listed
- code.gitea.io/gitea (Go): affected all versions; no fix listed
- code.gitea.io/gitea (Go): affected all versions; no fix listed
- gitea (Bitnami): affected all versions; fixed in 1.23.0

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-68939/ (Markdown: https://insights.sbomify.com/CVE-2025-68939/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-68939
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-68939
- OSV: https://osv.dev/vulnerability/CVE-2025-68939

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-68939/
Summaries are generated and may contain mistakes; the official description above is the record.