Medium

AstrBot has an arbitrary file read vulnerability in function _encode_image_bs64

  • Disclosed: 07.11.2025
  • Updated: 11.10.2026 13:19

AstrBot Project v3.5.22 has an arbitrary file read vulnerability in function _encode_image_bs64. Since the _encode_image_bs64 function defined in entities.py opens the image specified by the user in the request body and returns the image content as a base64-encoded string without checking the legitimacy of the image path, attackers can construct a series of malicious URLs to read any specified file, resulting in sensitive data leakage.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) astrbot <= 3.5.22 no fix

References

CVSS score -
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
Weakness (CWE)
CWE-125, CWE-22
Platform
Python (PyPI)
Package
astrbot
Disclosed
07.11.2025
Updated
11.10.2026 13:19

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2026-1197 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-vm2f-46xc-5jc3 - CC BY 4.0

Vulnerability history: astrbot

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

Total entries
8
First → latest
06.2025 06.2026
Without a fix
5
Exploited in attacks
0

Severity breakdown

  • Critical 1
  • High 3
  • Medium 1
  • Low 3

Disclosures per year

  1. 2025: 4
  2. 2026: 4
  1. High · 7.3 CVE-2026-7579 <= 4.16.0 no fix
  2. Low · 4.7 CVE-2026-6984 <= 4.22.1 no fix
  3. Critical · 9.8 CVE-2025-55449 < 3.5.18 3.5.18
  4. AstrBot has an arbitrary file read vulnerability in function _encode_image_bs64 this entry
    Medium CVE-2025-57697 <= 3.5.22 no fix
  5. High CVE-2025-57698 <= 3.5.22 no fix
  6. High · 7.5 CVE-2025-48957 >= 3.4.4, < 3.5.13 3.5.13

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