CVE-2017-5868
CRLF injection vulnerability in the web interface in OpenVPN Access Server 2.1.4 allows remote attackers to inject arbitrary HTTP headers and consequently conduct session fixation attacks and possibly HTTP response splitting attacks via "%0A" characters…
Does this matter?
Lower severity and a low EPSS score (4.62%). Track it; it rarely justifies an emergency change on its own.
Description
CRLF injection vulnerability in the web interface in OpenVPN Access Server 2.1.4 allows remote attackers to inject arbitrary HTTP headers and consequently conduct session fixation attacks and possibly HTTP response splitting attacks via "%0A" characters in the PATH_INFO to __session_start__/.
- CVSS 3.0
- 6.1 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 4.62% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-93
- Affected
- openvpn/openvpn access server
- Source
- cve@mitre.org
EPSS moved from 6.9% on 21 September 2026 to 4.6% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://www.openwall.com/lists/oss-security/2017/05/23/13Exploit, Mailing List, Third Party Advisory
- http://www.securitytracker.com/id/1038547Third Party Advisory, VDB Entry
- https://sysdream.com/news/lab/2017-05-05-cve-2017-5868-openvpn-access-server-crlf-injection-with-session-fixation/Exploit, Mitigation, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/05/23/13Exploit, Mailing List, Third Party Advisory
- http://www.securitytracker.com/id/1038547Third Party Advisory, VDB Entry
- https://sysdream.com/news/lab/2017-05-05-cve-2017-5868-openvpn-access-server-crlf-injection-with-session-fixation/Exploit, Mitigation, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.