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: 0.6% (45th percentile of EPSS-scored CVEs). 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: 0.6%CVSS: 6.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
6.3MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100CISA SSVC

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%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
45th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 14, 2026

Last Modified

September 24, 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 rangeFix by version rangeDependents
actix-http—
  • every version up to 3.12.1: fixed in 3.12.1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
rust-actix-http3.11.2-1 ... 3.9.0-3 (7 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
rust-actix-http3.11.2-1, 3.11.2-2, 3.12.0-1, 3.9.0-3
  • every version up to 3.13.1-1: fixed in 3.13.1-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 65× 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 134 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Same product

2 shown

crates.io:actix-http

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 on August 14, 2026, with the most recent update on September 24, 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 0.6% probability of exploitation in the next 30 days (45th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73051?
CVE-2026-73051 has a CVSS base score of 6.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73051?
A fix for CVE-2026-73051 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-73051 are linked in the Vendor Advisories panel on this page.

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