CVE-2026-73051

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 73% 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, secondary
Trending — 3 sources updated this week
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: None knownExposed: 0

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

actix-http versions before 3.12.1 contain an HTTP request smuggling vulnerability in the HTTP/1.1 parser that accepts requests with both Content-Length and Transfer-Encoding: chunked headers. Unauthenticated remote attackers can exploit this through a front-end intermediary to desynchronize backend requests and smuggle malicious HTTP requests to the Actix service.

CVSS v3
6.3
EG Score
6.3(medium)
EG Risk
28(Track)
EG Risk 28/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity63% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

August 14, 2026

Last Modified

August 14, 2026

Advisory Details (2)

Auto-updated Aug 14, 2026
Patch available. Sources: github.
generic

actix-http before 3.12.1 HTTP Request Smuggling via CL.TE | Advisories | VulnCheck

https://www.vulncheck.com/advisories/actix-http-before-http-request-smuggling-via-cl-te
github Patch Available

HTTP/1.1 CL.TE Request Smuggling In `actix-http` · Advisory · actix/actix-web · GitHub

https://github.com/actix/actix-web/security/advisories/GHSA-xhj4-vrgc-hr34

Vendor Advisories for CVE-2026-73051(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(3 across 3 ecosystems)
crates.io(1)
PackageVulnerable rangeFixed inDependents
actix-http—3.12.1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
rust-actix-http3.11.2-1 ... 3.9.0-3 (6 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
rust-actix-http3.11.2-1, 3.11.2-2, 3.12.0-1, 3.9.0-33.13.1-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 79× 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.

Showing the most recent 100 of 101 total refreshes for this CVE.

  1. 2026-09-19 04:52 UTCEG score recompute
  2. 2026-09-19 04:52 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 04:56 UTCEG score recompute
  5. 2026-09-18 04:56 UTCGHSA enrichment
  6. 2026-09-17 04:59 UTCEG score recompute
  7. 2026-09-17 04:59 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-16 05:02 UTCGHSA enrichment
  11. 2026-09-15 04:34 UTCEG score recompute
  12. 2026-09-15 04:34 UTCGHSA enrichment
  13. 2026-09-15 03:12 UTCEPSS rescore
  14. 2026-09-14 04:37 UTCEG score recompute
  15. 2026-09-14 04:37 UTCGHSA enrichment
  16. 2026-09-13 04:41 UTCEG score recompute
  17. 2026-09-13 04:41 UTCGHSA enrichment
  18. 2026-09-12 15:02 UTCEPSS rescore
  19. 2026-09-12 04:42 UTCEG score recompute
  20. 2026-09-12 04:42 UTCGHSA enrichment
  21. 2026-09-11 04:45 UTCEG score recompute
  22. 2026-09-11 04:45 UTCGHSA enrichment
  23. 2026-09-10 09:35 UTCEPSS rescore
  24. 2026-09-10 04:48 UTCGHSA enrichment
  25. 2026-09-09 04:50 UTCEG score recompute
Show 75 more
  1. 2026-09-09 04:50 UTCGHSA enrichment
  2. 2026-09-08 22:01 UTCEPSS rescore
  3. 2026-09-07 16:26 UTCEG score recompute
  4. 2026-09-07 16:26 UTCGHSA enrichment
  5. 2026-09-06 13:48 UTCEPSS rescore
  6. 2026-09-06 07:45 UTCEG score recompute
  7. 2026-09-06 07:45 UTCGHSA enrichment
  8. 2026-09-05 07:49 UTCEG score recompute
  9. 2026-09-05 07:49 UTCGHSA enrichment
  10. 2026-09-04 07:52 UTCEG score recompute
  11. 2026-09-04 07:52 UTCGHSA enrichment
  12. 2026-09-04 05:07 UTCEPSS rescore
  13. 2026-09-03 06:50 UTCEG score recompute
  14. 2026-09-03 06:50 UTCGHSA enrichment
  15. 2026-09-02 14:12 UTCEPSS rescore
  16. 2026-09-02 06:52 UTCEG score recompute
  17. 2026-09-02 06:52 UTCGHSA enrichment
  18. 2026-09-01 13:54 UTCEPSS rescore
  19. 2026-09-01 06:54 UTCEG score recompute
  20. 2026-09-01 06:54 UTCGHSA enrichment
  21. 2026-09-01 04:40 UTCEPSS rescore
  22. 2026-09-01 04:40 UTCEPSS rescore
  23. 2026-08-31 06:52 UTCEG score recompute
  24. 2026-08-31 06:52 UTCGHSA enrichment
  25. 2026-08-30 19:18 UTCEPSS rescore
  26. 2026-08-30 19:17 UTCEPSS rescore
  27. 2026-08-30 06:55 UTCEG score recompute
  28. 2026-08-30 06:55 UTCGHSA enrichment
  29. 2026-08-30 01:22 UTCEPSS rescore
  30. 2026-08-29 06:56 UTCEG score recompute
  31. 2026-08-29 06:56 UTCGHSA enrichment
  32. 2026-08-28 21:42 UTCEPSS rescore
  33. 2026-08-27 14:38 UTCEG score recompute
  34. 2026-08-27 14:38 UTCGHSA enrichment
  35. 2026-08-27 14:25 UTCEPSS rescore
  36. 2026-08-26 14:47 UTCEPSS rescore
  37. 2026-08-26 14:37 UTCGHSA enrichment
  38. 2026-08-26 14:36 UTCGHSA enrichment
  39. 2026-08-25 14:38 UTCEG score recompute
  40. 2026-08-25 14:38 UTCGHSA enrichment
  41. 2026-08-25 13:49 UTCEPSS rescore
  42. 2026-08-24 14:42 UTCEG score recompute
  43. 2026-08-24 14:41 UTCGHSA enrichment
  44. 2026-08-23 14:44 UTCEG score recompute
  45. 2026-08-23 14:44 UTCGHSA enrichment
  46. 2026-08-23 00:19 UTCEPSS rescore
  47. 2026-08-22 14:48 UTCEG score recompute
  48. 2026-08-22 14:48 UTCGHSA enrichment
  49. 2026-08-21 23:49 UTCEPSS rescore
  50. 2026-08-21 14:51 UTCEG score recompute
  51. 2026-08-21 14:51 UTCGHSA enrichment
  52. 2026-08-20 22:56 UTCEPSS rescore
  53. 2026-08-20 14:54 UTCEG score recompute
  54. 2026-08-20 14:53 UTCGHSA enrichment
  55. 2026-08-19 17:04 UTCEPSS rescore
  56. 2026-08-19 14:54 UTCGHSA enrichment
  57. 2026-08-18 14:58 UTCEG score recompute
  58. 2026-08-18 14:58 UTCGHSA enrichment
  59. 2026-08-18 13:49 UTCEPSS rescore
  60. 2026-08-18 13:49 UTCEPSS rescore
  61. 2026-08-17 14:17 UTCEG score recompute
  62. 2026-08-17 14:17 UTCGHSA enrichment
  63. 2026-08-17 13:47 UTCEPSS rescore
  64. 2026-08-16 14:56 UTCEPSS rescore
  65. 2026-08-16 14:56 UTCEPSS rescore
  66. 2026-08-16 14:21 UTCEG score recompute
  67. 2026-08-16 14:21 UTCGHSA enrichment
  68. 2026-08-16 02:15 UTCEPSS rescore
  69. 2026-08-15 14:25 UTCGHSA enrichment
  70. 2026-08-14 14:28 UTCEG score recompute
  71. 2026-08-14 14:28 UTCGHSA enrichment
  72. 2026-08-14 14:14 UTCEG score recompute
  73. 2026-08-14 14:14 UTCGHSA enrichment
  74. 2026-08-14 12:22 UTCEG score recompute
  75. 2026-08-14 11:49 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-73051?
CVE-2026-73051 is a medium vulnerability published on August 14, 2026. actix-http versions before 3.12.1 contain an HTTP request smuggling vulnerability in the HTTP/1.1 parser that accepts requests with both Content-Length and Transfer-Encoding: chunked headers. Unauthenticated remote attackers can exploit this through a front-end intermediary to desynchronize backend…
When was CVE-2026-73051 disclosed?
CVE-2026-73051 was first published in the National Vulnerability Database on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73051 actively exploited?
CVE-2026-73051 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 73.1% of all scored CVEs.
What is the CVSS score of CVE-2026-73051?
CVE-2026-73051 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-73051?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73051, 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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