CVE-2016-5360

HAproxy 1.6.x before 1.6.6, when a deny comes from a reqdeny rule, allows remote attackers to...

7.5 HighFix available

CVE-2016-5360 is a high vulnerability (CVSS 7.5) in Haproxy, published June 10, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 42.8%, the 98th percentile. Fixed in haproxy 1.6.5-2.

HAproxy 1.6.x before 1.6.6, when a deny comes from a reqdeny rule, allows remote attackers to cause a denial of service (uninitialized memory access and crash) or possibly have unspecified other impact via unknown vectors.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

42.8%Up 41.6 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

Record: CVE-2016-5360
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-119
Updated: 2026-11-02

CVE List No score

Record: CVE-2016-5360
Updated: 2026-11-02

EUVDEUVD-2016-6311 No score

Record: EUVD-2016-6311
Updated: 2026-11-03

GitHub AdvisoriesGHSA-cx88-7787-8r6h 7.5

HAproxy 1.6.x before 1.6.6, when a deny comes from a reqdeny rule, allows remote attackers to...

Record: GHSA-cx88-7787-8r6h
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-119
Updated: 2026-11-02

OSV 7.5

Record: CVE-2016-5360
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2016-5360 7.5

Record: DEBIAN-CVE-2016-5360
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2016-5360 7.5

Record: UBUNTU-CVE-2016-5360
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUSN-3011-1 No score

haproxy vulnerability

Falco Schmutz discovered that HAProxy incorrectly handled the reqdeny filter. A remote attacker could use this issue to cause HAProxy to crash, resulting in a denial of service.

Record: USN-3011-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`haproxy` Debian:12	before 1.6.5-2	1.6.5-2
`haproxy` Debian:13	before 1.6.5-2	1.6.5-2
`haproxy` Debian:14	before 1.6.5-2	1.6.5-2
`haproxy` Ubuntu:16.04:LTS	before 1.6.3-1ubuntu0.1, plus listed versions 1.5.14-11.5.15-11.6.2-11.6.2-21.6.2-2ubuntu11.6.2-2ubuntu31.6.3-1	1.6.3-1ubuntu0.1

History

History
When	Changed	Sources
2026-11-03	aliases	EUVD
2026-11-02	created	CVE List, GitHub Advisories, NVD, OSV

References

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