# CVE-2021-45329: Cross-site Scripting in Gitea

> Attackers can inject malicious scripts via external wiki or issue tracker URLs in repository settings, potentially compromising user sessions.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **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:** 8 Feb 2022
- **Updated:** 4 Aug 2024
- **Also known as:** BIT-gitea-2021-45329, CLEANSTART-2025-OQ04236, GHSA-r3gq-wxqf-q4gh, GO-2022-0314, UBUNTU-CVE-2021-45329

## What is CVE-2021-45329?

CVE-2021-45329 is a medium-severity cross-site scripting vulnerability in Gitea Gitea, published on 8 Feb 2022. 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

Cross Site Scripting (XSS) vulnerability exists in Gitea before 1.5.1 via the repository settings inside the external wiki/issue tracker URL field.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2021-45329?

4 open source packages ship an affected version, including github.com/go-gitea/gitea and gitea. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `github.com/go-gitea/gitea` | Go | All versions | 1.5.1 |
| `github.com/go-gitea/gitea` | Go | All versions | 1.5.1 |
| `github.com/go-gitea/gitea` | Go | All versions | 1.5.1 |
| `gitea` | Bitnami | All versions | 1.5.1 |

Products: Gitea Gitea.

## How do I fix CVE-2021-45329?

Upgrade github.com/go-gitea/gitea to 1.5.1 or later.

## Is CVE-2021-45329 being exploited?

There is no known exploitation of CVE-2021-45329 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-2021-45329 and fix it if it is affected.

What it is: CVE-2021-45329 is a medium-severity cross-site scripting vulnerability in Gitea Gitea, published on 8 Feb 2022. 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-2021-45329 in the wild and no public exploit code.

Affected packages and fixed versions:
- github.com/go-gitea/gitea (Go): affected all versions; fixed in 1.5.1
- github.com/go-gitea/gitea (Go): affected all versions; fixed in 1.5.1
- github.com/go-gitea/gitea (Go): affected all versions; fixed in 1.5.1
- gitea (Bitnami): affected all versions; fixed in 1.5.1

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-2021-45329/ (Markdown: https://insights.sbomify.com/CVE-2021-45329/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-45329
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-45329
- OSV: https://osv.dev/vulnerability/CVE-2021-45329

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-45329/
Summaries are generated and may contain mistakes; the official description above is the record.