CVE - CVE-2025-31135

CVE-ID
CVE-2025-31135	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Go-Guerrilla SMTP Daemon is a lightweight SMTP server written in Go. Prior to 1.6.7, when ProxyOn is enabled, the PROXY command will be accepted multiple times, with later invocations overriding earlier ones. The proxy protocol only supports one initial PROXY header; anything after that is considered part of the exchange between client and server, so the client is free to send further PROXY commands with whatever data it pleases. go-guerrilla will treat these as coming from the reverse proxy, allowing a client to spoof its IP address. This vulnerability is fixed in 1.6.7.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://github.com/phires/go-guerrilla/commit/7673947f2d5204a135d7ae0b7f80759e548abee6 URL:https://github.com/phires/go-guerrilla/commit/7673947f2d5204a135d7ae0b7f80759e548abee6 MISC:https://github.com/phires/go-guerrilla/security/advisories/GHSA-c2c3-pqw5-5p7c URL:https://github.com/phires/go-guerrilla/security/advisories/GHSA-c2c3-pqw5-5p7c
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20250326	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250326)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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