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Servers and applications

CVE-2015-8852

Varnish 3.x before 3.0.7, when used in certain stacked installations, allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via a header line terminated by a \r (carriage return) character in conjunction with multiple Content-Length headers in an HTTP request.

Severity
High 7.5
Published
25 Apr 2016
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
3.5% in the next 30 daysHigher than 89% of CVEs. EPSS by FIRST, 11 Nov 2026
Attack
Over the network · No login needed · No user action needed
Attacker can
Change data
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Sources
NVD

Affected software

SoftwareAffected versions
Varnish CacheServers and applications · cpe:a:varnish_cache_project:varnish_cache
  • Version 3.0.6
  • Version 3.0.5
  • Version 3.0.4
  • Version 3.0.3
All 8 release lines
  • Version 3.0.0-beta1
  • Version 3.0.0-beta2
  • Version 3.0.1
  • Version 3.0.2
  • Version 3.0.3
  • Version 3.0.4
  • Version 3.0.5
  • Version 3.0.6

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2015-8852
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2015-8852