CVE-2022-24766

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.8%, top 26% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

mitmproxy is an interactive, SSL/TLS-capable intercepting proxy. In mitmproxy 7.0.4 and below, a malicious client or server is able to perform HTTP request smuggling attacks through mitmproxy. This means that a malicious client/server could smuggle a request/response through mitmproxy as part of another request/response's HTTP message body. While mitmproxy would only see one request, the target server would see multiple requests. A smuggled request is still captured as part of another request's body, but it does not appear in the request list and does not go through the usual mitmproxy event hooks, where users may have implemented custom access control checks or input sanitization. Unless mitmproxy is used to protect an HTTP/1 service, no action is required. The vulnerability has been fixed in mitmproxy 8.0.0 and above. There are currently no known workarounds.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
73.6%
KEV
Not listed

Published

March 21, 2022

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Jun 9, 2026
Patch available. Sources: github_commit, github.
generic

Mitmproxy 8

https://mitmproxy.org/posts/releases/mitmproxy8/
github Patch Available

Insufficient Protection against HTTP Request Smuggling in mitmproxy · Advisory · mitmproxy/mitmproxy · GitHub

https://github.com/mitmproxy/mitmproxy/security/advisories/GHSA-gcx2-gvj7-pxv3
github_commit Patch Available

commit b06fb6d15708 (mitmproxy/mitmproxy)

Patch available: mitmproxy/mitmproxy v10.1.2 (contains commit b06fb6d15708)

https://github.com/mitmproxy/mitmproxy/commit/b06fb6d157087d526bd02e7aadbe37c56865c71b

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
mitmproxy0.10 ... 7.0.4 (50 versions)8.0.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 45× 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. 2026-07-22 14:06 UTCEPSS rescore
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  10. 2026-07-17 19:59 UTCOSV refresh
  11. 2026-07-16 17:00 UTCEPSS rescore
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  13. 2026-07-15 16:56 UTCEPSS rescore
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  1. 2026-07-06 16:25 UTCEPSS rescore
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  7. 2026-06-30 23:20 UTCEPSS rescore
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  9. 2026-06-29 17:53 UTCOSV refresh
  10. 2026-06-29 14:04 UTCEPSS rescore
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  12. 2026-06-28 14:06 UTCEPSS rescore
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  19. 2026-06-23 21:31 UTCEPSS rescore
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  21. 2026-06-22 14:24 UTCEPSS rescore
  22. 2026-06-21 14:55 UTCEPSS rescore
  23. 2026-06-21 14:55 UTCEPSS rescore
  24. 2026-06-19 19:24 UTCEPSS rescore
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  26. 2026-06-18 17:51 UTCEPSS rescore
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  28. 2026-06-17 17:51 UTCEPSS rescore
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  31. 2026-06-15 17:46 UTCEPSS rescore
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  36. 2026-06-12 23:10 UTCEPSS rescore
  37. 2026-06-12 23:10 UTCEPSS rescore
  38. 2026-06-12 06:36 UTCOSV refresh
  39. 2026-06-11 13:58 UTCEPSS rescore
  40. 2026-06-11 13:58 UTCEPSS rescore
  41. 2026-06-10 22:16 UTCEPSS rescore
  42. 2026-06-10 13:20 UTCEPSS rescore
  43. 2026-06-08 14:15 UTCEPSS rescore
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  45. 2026-06-07 15:23 UTCEPSS rescore
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  47. 2026-06-06 13:46 UTCEPSS rescore
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  49. 2026-06-05 22:45 UTCEPSS rescore
  50. 2026-06-05 06:09 UTCEPSS rescore
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  52. 2026-06-04 13:11 UTCEPSS rescore
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  57. 2026-06-01 13:50 UTCEPSS rescore
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  68. 2026-05-27 13:39 UTCEPSS rescore
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  70. 2026-05-26 13:43 UTCEPSS rescore
  71. 2026-05-26 07:17 UTCEPSS rescore
  72. 2026-05-26 07:17 UTCEPSS rescore
  73. 2026-05-26 01:14 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2022-24766?
CVE-2022-24766 is a critical vulnerability published on March 21, 2022. mitmproxy is an interactive, SSL/TLS-capable intercepting proxy. In mitmproxy 7.0.4 and below, a malicious client or server is able to perform HTTP request smuggling attacks through mitmproxy. This means that a malicious client/server could smuggle a request/response through mitmproxy as part of…
When was CVE-2022-24766 disclosed?
CVE-2022-24766 was first published in the National Vulnerability Database on March 21, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-24766 actively exploited?
CVE-2022-24766 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 73.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-24766?
CVE-2022-24766 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2022-24766?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-24766, 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.

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