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Vulnerabilities

Vulnerability · CVE-2018-14645

A flaw was discovered in the HPACK decoder of HAProxy, before 1.8.14, that is used for HTTP/2.

Published Sep 21, 2018 · catalog updated Jun 17, 2026 · A flaw was discovered

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2018-14645. EPSS is 3.07%. Act only if a listed version of A flaw was discovered is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (A flaw was discovered).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
3.07%
Remediation
Version ranges on file
Affected products
cpe canonical/ubuntu linux · cpe haproxy/haproxy · cpe redhat/enterprise linux · cpe redhat/openshift · cpe redhat/openshift container platform

A flaw was discovered in the HPACK decoder of HAProxy, before 1.8.14, that is used for HTTP/2. An out-of-bounds read access in hpack_valid_idx() resulted in a remote crash and denial of service.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe canonical/ubuntu linux18.04
  • cpe haproxy/haproxy<= 1.8.14
  • cpe redhat/enterprise linux7.0
  • cpe redhat/enterprise linux7.3
  • cpe redhat/openshift3.10
  • cpe redhat/openshift container platform3.9

How to fix CVE-2018-14645

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2018-14645. EPSS is 3.07%. Act only if a listed version of A flaw was discovered is installed.

Which versions are affected?

Compare what you have installed with canonical/ubuntu linux 18.04; redhat/enterprise linux 7.0; redhat/enterprise linux 7.3; redhat/openshift container platform 3.9. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-125: Out-of-bounds Read. EPSS 3.07%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

HAProxy security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 21, 2018 · Monitored products — high

    Detected

    A flaw was discovered in the HPACK decoder of HAProxy, before 1.8.14, that is used for HTTP/2. An out-of-bounds read access in hpack_valid_idx() resulted in a remote crash and denial of service.

  2. Jun 17, 2026 · Monitored products — high

    Updated

    A flaw was discovered in the HPACK decoder of HAProxy, before 1.8.14, that is used for HTTP/2. An out-of-bounds read access in hpack_valid_idx() resulted in a remote crash and denial of service.

Sources

  • CVE.orgVulnerability recordCVE-2018-14645

    Official CVE identifier

    cve.org
  • Monitored products — highVendor advisoryCVE-2018-14645

    A flaw was discovered in the HPACK decoder of HAProxy, before 1.8.14, that is used for HTTP/2. An out-of-bounds read access in hpack_valid_idx() resulted in a remote crash and denial of service.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • Monitored products — highNov 2, 2026