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CVE-2025-3110

MEDIUM
6.9
CVSS 4.0
Description
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

Metadata

CVE ID
CVE-2025-3110
State
PUBLISHED
Assigner
OpenVPN
Reserved
2025-04-02 07:56 UTC
Published
2026-07-08 16:19 UTC
Last updated
2026-07-08 16:30 UTC
Primary CWE
CWE-444
CWE-444 Inconsistent interpretation of HTTP requests ('HTTP …
Vendor / Product
OpenVPN / Access Server
Sources
cve.org  ·  NVD

Severity & Metrics

6.9 MEDIUM CVSS 4.0
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
SSVC — CISA Coordinator
Exploitation
none
Automatable
yes
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
OpenVPN Access Server — 2.7.2 ≤ 3.1.0
Weakness (CWE)
CWESourceDescription
CWE-444 cna CWE-444 Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling')
CVSS scores (1)
ScoreSeverityVersionSourceVector
6.9 MEDIUM 4.0 cna 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
References (1)
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