CVE-2025-3110CWE-444

CVE-2025-3110

High · published July 8, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
37.7
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00445 · 37.7th percentile
Weakness
CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Published
2026-07-08T21:17Z
Affected products (1)
ProductVersionsFixed in
openvpn/openvpn_access_server≥ 2.7.2, ≤ 3.1.0—
References (1)
https://openvpn.net/as-docs/as-3-2-release-notes.html · [email protected]
EPSS history
Timeline
  • 08 JUL 16:19Z
    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…
    cvelistv5