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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.

Severity
7.5 HighCVSS 3.0, NVD
Exploit chance
42.8%EPSS, 98th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
1.6.5-2haproxy +3 more

Description

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
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
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

What each source reports

NVD Score used7.5

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.

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 ListNo score

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.

Record
CVE-2016-5360
Updated
2026-11-02
EUVDEUVD-2016-6311No score

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.

Record
EUVD-2016-6311
Updated
2026-11-03
GitHub AdvisoriesGHSA-cx88-7787-8r6h7.5

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

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.

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
OSV7.5

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.

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-2016-53607.5

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.

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-2016-53607.5

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.

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-3011-1No 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

History

History
RecordedChangedSources
facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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