High · published December 26, 2025
⚡ Gitea before version 1.23.0 has a sneaky flaw that lets attackers slip in forbidden file types through the attachment API — it’s like getting a pizza delivered with anchovies, even when you specifically said ‘no fish’! 🍕 This vulnerability is akin to a hotel that allows guests to check in without ensuring they meet the requirements — anyone could bring in a hidden surprise, like a pet iguana, even if they're not supposed to! An attacker could exploit this oversight to upload potentially malicious files disguised as harmless attachments, leading to unauthorized access or even a full system compromise. Imagine the havoc of an unwanted guest in your hotel — they could wreak havoc before you even notice they're there!
This vulnerability is akin to a hotel that allows guests to check in without ensuring they meet the requirements — anyone could bring in a hidden surprise, like a pet iguana, even if they're not supposed to! This flaw in Gitea allows attackers to manipulate attachment names via the API, bypassing restrictions on forbidden file extensions and potentially uploading malicious files.
An attacker could exploit this oversight to upload potentially malicious files disguised as harmless attachments, leading to unauthorized access or even a full system compromise. Imagine the havoc of an unwanted guest in your hotel — they could wreak havoc before you even notice they're there! To secure your Gitea instance, update to version 1.23.0 immediately. Additionally, review your attachment handling policies to ensure all file types are properly validated and sanitized. Don't overlook your security practices! You've got this! Secure your Gitea, and keep that iguana out of your system! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| gitea/gitea | < 1.23.0 | 1.23.0 |