CVE-2025-3110

6.9 mediumEPSS 0.4%

Medium (6.9) in openvpn openvpn access server. EPSS 0.4% chance of exploitation in the next 30 days.

OpenVPN Access Server 2.7.2 through 3.1.0 accepts bare line-feed sequences inside HTTP header values, allowing remote attackers to perform HTTP request smuggling when deployed behind a reverse proxy

Severity

CVSS 4.0

6.9 medium

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N

CVSS 3.1

7.5 high

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 38% of CVEs (scores of 2026-10-31)
CWE: CWE-444
Published: 2026-07-08
Modified: 2026-09-29
Record from: the NVD, synced 2026-10-19

Affected

openvpn:openvpn_access_server

References

https://openvpn.net/as-docs/as-3-2-release-notes.html

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