SB20250422199 - Authentication Bypass by Spoofing in OctoPrint

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Main Vulnerability Database SB20250422199

SB20250422199 - Authentication Bypass by Spoofing in OctoPrint

Published: April 22, 2025 Updated: November 9, 2026

Security Bulletin ID SB20250422199
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Adjecent network
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Authentication Bypass by Spoofing (CVE-ID: CVE-2025-32788)

CWE-ID: CWE-290 - Authentication Bypass by Spoofing

CVSSv4: 5.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows an unauthenticated adjacent-network attacker to disclose the IP addresses of configured reverse proxies in OctoPrint.

The vulnerability exists due to frontend authentication checks skipping the login redirect when requests include the X-Preemptive-Recording: yes HTTP header. An unauthenticated adjacent-network attacker can send this header to the authenticated reverse proxy test page and read its rendered HTML without logging in.


Remediation

Install update from vendor's website.

References