CVE-2022-37436

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2023-01-17. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
5.3
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • 323 internet-exposed hosts are running an affected version right now
  • High exploitation likelihood — EPSS 58%
CISA-KEV: Not listedEPSS: 58%CVSS: 5.3Exploit: NoneExposed: 323

A fix is available — apply it.

Prior to Apache HTTP Server 2.4.55, a malicious backend can cause the response headers to be truncated early, resulting in some headers being incorporated into the response body. If the later headers have any security purpose, they will not be interpreted by the client.

Live · internet exposure

323 internet-exposed hosts are running an affected version of CVE-2022-37436 right now.

across 46 countries (United States, Japan, Germany, France, Netherlands)top: http_server
See the live KEV-Exposure radar →Found passively from public internet-scan data — aggregate, host-redacted.

EchelonGraph is the only CVE feed that fuses live vulnerability intelligence with its own live internet-exposure radar — so you see not just that a CVE is exploited, but how much of the internet is exposed to it right now.

CVSS v3
5.3
EG Score
5.3(medium)
EPSS
99.0%
KEV
Not listed

Published

January 17, 2023

Last Modified

April 4, 2025

References (4)

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuapache2-bin (2.4.41-4ubuntu3.13) @ focal2026-05-25ubuntu
ubuntuapache2-bin (2.4.18-2ubuntu3.17+esm9) @ xenial2026-05-25ubuntu
redhatjbcs-httpd24-httpd-0:2.4.57-5.el7jbcs2023-08-15redhat
redhathttpd2023-08-15redhat
redhathttpd-0:2.4.53-7.el9_1.12023-02-28redhat
redhathttpd:2.4-8070020230131172653.bd1311ed2023-02-21redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(7)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 3× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-11 08:25 UTCEPSS rescore
  2. 2026-07-08 15:12 UTCEPSS rescore
  3. 2026-07-05 02:28 UTCEPSS rescore
  4. 2026-07-01 15:04 UTCEPSS rescore
  5. 2026-06-30 23:20 UTCEPSS rescore
  6. 2026-06-30 23:20 UTCEPSS rescore
  7. 2026-06-28 08:22 UTCOSV refresh
  8. 2026-06-28 04:54 UTCEPSS rescore
  9. 2026-06-28 04:54 UTCEPSS rescore
  10. 2026-06-25 13:48 UTCEPSS rescore
  11. 2026-06-25 13:48 UTCEPSS rescore
  12. 2026-06-23 21:31 UTCEPSS rescore
  13. 2026-06-23 21:31 UTCEPSS rescore
  14. 2026-06-22 14:24 UTCEPSS rescore
  15. 2026-06-22 14:24 UTCEPSS rescore
  16. 2026-06-21 01:58 UTCEPSS rescore
  17. 2026-06-21 01:58 UTCEPSS rescore
  18. 2026-06-19 19:24 UTCEPSS rescore
  19. 2026-06-19 19:24 UTCEPSS rescore
  20. 2026-06-18 17:51 UTCEPSS rescore
  21. 2026-06-18 17:51 UTCEPSS rescore
  22. 2026-06-17 17:51 UTCEPSS rescore
  23. 2026-06-17 17:51 UTCEPSS rescore
  24. 2026-06-16 17:51 UTCEPSS rescore
  25. 2026-06-15 17:46 UTCEPSS rescore
Show 47 more
  1. 2026-06-14 23:15 UTCEPSS rescore
  2. 2026-06-13 22:58 UTCEPSS rescore
  3. 2026-06-12 23:10 UTCEPSS rescore
  4. 2026-06-12 23:10 UTCEPSS rescore
  5. 2026-06-11 13:58 UTCEPSS rescore
  6. 2026-06-11 13:58 UTCEPSS rescore
  7. 2026-06-10 22:17 UTCEPSS rescore
  8. 2026-06-10 18:47 UTCOSV refresh
  9. 2026-06-10 13:20 UTCEPSS rescore
  10. 2026-06-08 14:15 UTCEPSS rescore
  11. 2026-06-08 14:15 UTCEPSS rescore
  12. 2026-06-07 15:23 UTCEPSS rescore
  13. 2026-06-07 15:23 UTCEPSS rescore
  14. 2026-06-06 13:46 UTCEPSS rescore
  15. 2026-06-06 13:46 UTCEPSS rescore
  16. 2026-06-06 13:46 UTCEPSS rescore
  17. 2026-06-05 22:46 UTCEPSS rescore
  18. 2026-06-05 22:45 UTCEPSS rescore
  19. 2026-06-05 06:09 UTCEPSS rescore
  20. 2026-06-05 06:09 UTCEPSS rescore
  21. 2026-06-04 13:11 UTCEPSS rescore
  22. 2026-06-04 13:11 UTCEPSS rescore
  23. 2026-06-02 20:11 UTCEPSS rescore
  24. 2026-06-02 20:11 UTCEPSS rescore
  25. 2026-06-01 13:50 UTCEPSS rescore
  26. 2026-06-01 13:50 UTCEPSS rescore
  27. 2026-05-31 22:29 UTCEPSS rescore
  28. 2026-05-31 22:29 UTCEPSS rescore
  29. 2026-05-31 22:29 UTCEPSS rescore
  30. 2026-05-31 00:15 UTCEPSS rescore
  31. 2026-05-31 00:15 UTCEPSS rescore
  32. 2026-05-29 13:43 UTCEPSS rescore
  33. 2026-05-29 13:43 UTCEPSS rescore
  34. 2026-05-28 13:43 UTCEPSS rescore
  35. 2026-05-28 13:43 UTCEPSS rescore
  36. 2026-05-27 13:39 UTCEPSS rescore
  37. 2026-05-27 13:39 UTCEPSS rescore
  38. 2026-05-26 13:43 UTCEPSS rescore
  39. 2026-05-26 13:43 UTCEPSS rescore
  40. 2026-05-26 07:17 UTCEPSS rescore
  41. 2026-05-26 07:17 UTCEPSS rescore
  42. 2026-05-26 07:17 UTCEPSS rescore
  43. 2026-05-25 08:30 UTCEG score recompute
  44. 2026-05-25 08:30 UTCVendor advisory
  45. 2026-05-25 08:30 UTCGHSA enrichment
  46. 2026-05-24 16:51 UTCEPSS rescore
  47. 2026-05-23 10:01 UTCOSV refresh

Frequently asked(5)

What is CVE-2022-37436?
CVE-2022-37436 is a medium vulnerability published on January 17, 2023. Prior to Apache HTTP Server 2.4.55, a malicious backend can cause the response headers to be truncated early, resulting in some headers being incorporated into the response body. If the later headers have any security purpose, they will not be interpreted by the client.
When was CVE-2022-37436 disclosed?
CVE-2022-37436 was first published in the National Vulnerability Database on January 17, 2023, with the most recent update on April 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-37436 actively exploited?
CVE-2022-37436 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-37436?
CVE-2022-37436 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2022-37436?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-37436, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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