CVE-2026-32616

Published: Mar 16, 2026Modified: Jun 17, 2026Deferred

8.2

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Exploitability: 2.8 / Impact: 4.7

Source: security-advisories@github.com (Secondary)

Description

Pigeon is a message board/notepad/social system/blog. Prior to 1.0.201, the application uses $_SERVER['HTTP_HOST'] without validation to construct email verification URLs in the register and resendmail flows. An attacker can manipulate the Host header in the HTTP request, causing the verification link sent to the user's email to point to an attacker-controlled domain. This can lead to account takeover by stealing the email verification token. This vulnerability is fixed in 1.0.201.

Related CWEs

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

References (2)

https://github.com/kasuganosoras/Pigeon/releases/tag/1.0.201

Source: security-advisories@github.com

https://github.com/kasuganosoras/Pigeon/security/advisories/GHSA-rrj4-9wgq-prcr

Source: security-advisories@github.com

Timeline

No history available yet.