CVE-2023-46137

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.8% (53rd 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, nvd
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Twisted is an event-based framework for internet applications. Prior to version 23.10.0rc1, when sending multiple HTTP requests in one TCP packet, twisted.web will process the requests asynchronously without guaranteeing the response order. If one of the endpoints is controlled by an attacker, the attacker can delay the response on purpose to manipulate the response of the second request when a victim launched two requests using HTTP pipeline. Version 23.10.0rc1 contains a patch for this issue.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
39
EG Risk 39/100CISA 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
Severity53% × 45%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.8%
EPSS %ILE
54th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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

October 25, 2023

Last Modified

June 17, 2026

References (3)

Vendor Advisories for CVE-2023-46137(2)

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

Patch Availability(4)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntutwisted-doc (22.4.0-4ubuntu0.23.10.1) @ mantic2026-05-24ubuntu
redhatautomation-controller-0:4.5.5-2.el9ap2024-04-02redhat
redhatpython-twisted-0:16.4.1-21.el8ost2024-03-26redhat
redhatpython-twisted-0:23.10.0-1.el9ap2024-01-22redhat

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.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
twisted20.3.0-7, 20.3.0-7+deb11u1
  • every version up to 20.3.0-7+deb11u2: fixed in 20.3.0-7+deb11u2
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
twisted22.4.0-4
  • every version up to 22.4.0-4+deb12u1: fixed in 22.4.0-4+deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
twisted—
  • every version up to 23.10.0-1: fixed in 23.10.0-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
twisted—
  • every version up to 23.10.0-1: fixed in 23.10.0-1
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
twisted1.0.1 ... 9.0.0 (96 versions)
  • every version up to 23.10.0rc1: fixed in 23.10.0rc1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(4)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 6× in last 7d / 30× 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 193 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2023-46137?
CVE-2023-46137 is a medium vulnerability published on October 25, 2023. Twisted is an event-based framework for internet applications. Prior to version 23.10.0rc1, when sending multiple HTTP requests in one TCP packet, twisted.web will process the requests asynchronously without guaranteeing the response order. If one of the endpoints is controlled by an attacker, the…
When was CVE-2023-46137 disclosed?
CVE-2023-46137 was first published on October 25, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-46137 actively exploited?
CVE-2023-46137 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (54th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-46137?
CVE-2023-46137 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2023-46137?
A fix for CVE-2023-46137 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2023-46137 are linked in the Vendor Advisories panel on this page.

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