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Vulnerability record · CVE-2026-32616 · published 16 March 2026

CVE-2026-32616: Injection vulnerability

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.

8.2 CVSS 3.1 High EPSS 0.33% · top 76.3% CWE-74 · Injection Deferred
8.2CVSS 3.1 base score
0.33%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

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

References

LinkTags
https://github.com/kasuganosoras/Pigeon/releases/tag/1.0.201
https://github.com/kasuganosoras/Pigeon/security/advisories/GHSA-rrj4-9wgq-prcr

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Source: NIST National Vulnerability Database (record CVE-2026-32616), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.