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Vulnerabilities

Vulnerability · CVE-2022-31813

Apache HTTP Server 2.4.53 and earlier may not send the X-Forwarded-* headers to the origin server based on client side Connection header hop-by-hop mechanism.

Published Jun 9, 2022 · catalog updated Jun 17, 2026 · http server

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

Check if you run it

No confirmed exploitation is on record for CVE-2022-31813. EPSS is 3.54%. Act only if a listed version of http server is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Critical9.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
3.54%
Remediation
Version ranges on file
Affected products
cpe apache/http server · cpe fedoraproject/fedora · cpe netapp/clustered data ontap

Apache HTTP Server 2.4.53 and earlier may not send the X-Forwarded-* headers to the origin server based on client side Connection header hop-by-hop mechanism. This may be used to bypass IP based authentication on the origin server/application.

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 apache/http server< 2.4.54
  • cpe fedoraproject/fedora35
  • cpe fedoraproject/fedora36
  • cpe netapp/clustered data ontapversion unspecified

How to fix CVE-2022-31813

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-2022-31813. EPSS is 3.54%. Act only if a listed version of http server is installed.

Which versions are affected?

Compare what you have installed with apache/http server < 2.4.54. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-345: Insufficient Verification of Data Authenticity; CWE-348. EPSS 3.54%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Apache HTTP Server 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. Jun 9, 2022 · Monitored products — critical

    Detected

    Apache HTTP Server 2.4.53 and earlier may not send the X-Forwarded-* headers to the origin server based on client side Connection header hop-by-hop mechanism. This may be used to bypass IP based authentication on the origin server/application.

  2. Jun 17, 2026 · Monitored products — critical

    Updated

    Apache HTTP Server 2.4.53 and earlier may not send the X-Forwarded-* headers to the origin server based on client side Connection header hop-by-hop mechanism. This may be used to bypass IP based authentication on the origin server/application.

Sources

  • CVE.orgVulnerability recordCVE-2022-31813

    Official CVE identifier

    cve.org
  • Monitored products — criticalVendor advisoryCVE-2022-31813

    Apache HTTP Server 2.4.53 and earlier may not send the X-Forwarded-* headers to the origin server based on client side Connection header hop-by-hop mechanism. This may be used to bypass IP based authentication on the origin server/application.

    nvd.nist.gov
  • urlscan.ioThreat intelligenceCVE-2022-31813
    urlscan.io

References

Freshness

Last verified in this catalog Nov 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • urlscan.ioNov 6, 2026
  • CVE.orgNov 4, 2026
  • Monitored products — criticalNov 4, 2026