CVE-2026-56850

MEDIUMNVD 4.44.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.4 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 100% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
4.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.4Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw in Node.js HTTPS Agent connection reuse can cause PFX object-array key collisions, allowing mutual TLS (mTLS) client identities to be reused across requests configured with different client certificates. This vulnerability affects Node.js 26.x, 24.x, and 22.x.

CVSS v3
4.4
EG Score
4.4(medium)
EG Risk
20(Track)
EG Risk 20/100SSVC: 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
Severity44% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
0%
KEV
Not listed

Published

July 30, 2026

Last Modified

August 25, 2026

Advisory Details (1)

Auto-updated Jul 30, 2026
No patch confirmed yet.
generic

Node.js — Wednesday, July 29, 2026 Security Releases

https://nodejs.org/en/blog/vulnerability/july-2026-security-releases

Vendor Advisories for CVE-2026-56850(4)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatnodejs24-main-24.18.1-0.1.hum12026-07-30redhat
redhatnodejs26-main-26.5.1-1.5.hum12026-07-29redhat
redhatnodejs22-main-22.23.2-2.3.hum12026-07-29redhat

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

(8 across 8 ecosystems)
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
nodejs—22.23.2-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
nodejs—22.23.2-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
nodejs—24.18.1-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
nodejs—24.18.1-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
nodejs12.21.0~dfsg-5 ... 24.18.0+dfsg+~cs24.13.2-1 (174 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
nodejs18.13.0+dfsg1-1 ... 24.20.0+dfsg+~cs24.13.3-2 (90 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
nodejs20.19.2+dfsg-1 ... 24.20.0+dfsg+~cs24.13.3-2 (45 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
nodejs20.19.2+dfsg-1 ... 24.18.0+dfsg+~cs24.13.2-1 (40 versions)24.19.0+dfsg+~cs24.13.3-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

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 18× in last 7d / 85× 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 141 total refreshes for this CVE.

  1. 2026-09-15 07:09 UTCVendor advisory
  2. 2026-09-15 07:09 UTCGHSA enrichment
  3. 2026-09-14 06:49 UTCVendor advisory
  4. 2026-09-14 06:49 UTCGHSA enrichment
  5. 2026-09-13 06:58 UTCVendor advisory
  6. 2026-09-13 06:58 UTCGHSA enrichment
  7. 2026-09-12 06:56 UTCEG score recompute
  8. 2026-09-12 06:56 UTCVendor advisory
  9. 2026-09-12 06:56 UTCGHSA enrichment
  10. 2026-09-11 14:53 UTCEPSS rescore
  11. 2026-09-11 07:05 UTCEG score recompute
  12. 2026-09-11 07:05 UTCVendor advisory
  13. 2026-09-11 07:04 UTCGHSA enrichment
  14. 2026-09-10 09:35 UTCEPSS rescore
  15. 2026-09-10 07:12 UTCVendor advisory
  16. 2026-09-10 07:12 UTCGHSA enrichment
  17. 2026-09-09 07:22 UTCVendor advisory
  18. 2026-09-09 07:22 UTCGHSA enrichment
  19. 2026-09-07 20:05 UTCEG score recompute
  20. 2026-09-07 20:05 UTCVendor advisory
  21. 2026-09-07 20:05 UTCGHSA enrichment
  22. 2026-09-07 16:01 UTCEPSS rescore
  23. 2026-09-06 13:47 UTCEPSS rescore
  24. 2026-09-06 11:17 UTCEG score recompute
  25. 2026-09-06 11:17 UTCVendor advisory
Show 75 more
  1. 2026-09-06 11:17 UTCGHSA enrichment
  2. 2026-09-05 11:26 UTCVendor advisory
  3. 2026-09-05 11:26 UTCGHSA enrichment
  4. 2026-09-04 11:33 UTCEG score recompute
  5. 2026-09-04 11:33 UTCVendor advisory
  6. 2026-09-04 11:33 UTCGHSA enrichment
  7. 2026-09-04 05:07 UTCEPSS rescore
  8. 2026-09-01 23:36 UTCEG score recompute
  9. 2026-09-01 23:36 UTCVendor advisory
  10. 2026-09-01 23:36 UTCGHSA enrichment
  11. 2026-09-01 13:54 UTCEPSS rescore
  12. 2026-08-31 23:38 UTCVendor advisory
  13. 2026-08-31 23:38 UTCGHSA enrichment
  14. 2026-08-30 22:30 UTCVendor advisory
  15. 2026-08-30 22:30 UTCGHSA enrichment
  16. 2026-08-29 22:39 UTCVendor advisory
  17. 2026-08-29 22:39 UTCGHSA enrichment
  18. 2026-08-27 20:49 UTCVendor advisory
  19. 2026-08-27 20:49 UTCGHSA enrichment
  20. 2026-08-26 19:20 UTCEG score recompute
  21. 2026-08-26 19:20 UTCVendor advisory
  22. 2026-08-26 19:20 UTCGHSA enrichment
  23. 2026-08-26 14:46 UTCEPSS rescore
  24. 2026-08-25 18:07 UTCEG score recompute▲ 0.30
  25. 2026-08-25 18:07 UTCVendor advisory
  26. 2026-08-25 18:06 UTCGHSA enrichment
  27. 2026-08-25 18:05 UTCNVD updateCVSS v3 → 4.4
  28. 2026-08-25 15:10 UTCEG score recompute
  29. 2026-08-25 15:10 UTCVendor advisory
  30. 2026-08-25 15:10 UTCGHSA enrichment
  31. 2026-08-25 13:49 UTCEPSS rescore
  32. 2026-08-24 15:16 UTCEG score recompute
  33. 2026-08-24 15:16 UTCVendor advisory
  34. 2026-08-24 15:16 UTCGHSA enrichment
  35. 2026-08-23 15:24 UTCEG score recompute
  36. 2026-08-23 15:24 UTCVendor advisory
  37. 2026-08-23 15:24 UTCGHSA enrichment
  38. 2026-08-23 00:19 UTCEPSS rescore
  39. 2026-08-22 15:33 UTCEG score recompute
  40. 2026-08-22 15:33 UTCVendor advisory
  41. 2026-08-22 15:33 UTCGHSA enrichment
  42. 2026-08-21 23:49 UTCEPSS rescore
  43. 2026-08-21 15:42 UTCEG score recompute
  44. 2026-08-21 15:42 UTCVendor advisory
  45. 2026-08-21 15:42 UTCGHSA enrichment
  46. 2026-08-20 22:55 UTCEPSS rescore
  47. 2026-08-20 15:51 UTCEG score recompute
  48. 2026-08-20 15:51 UTCVendor advisory
  49. 2026-08-20 15:51 UTCGHSA enrichment
  50. 2026-08-19 17:04 UTCEPSS rescore
  51. 2026-08-19 16:00 UTCVendor advisory
  52. 2026-08-19 16:00 UTCGHSA enrichment
  53. 2026-08-18 15:59 UTCEG score recompute
  54. 2026-08-18 15:59 UTCVendor advisory
  55. 2026-08-18 15:59 UTCGHSA enrichment
  56. 2026-08-18 13:48 UTCEPSS rescore
  57. 2026-08-17 13:57 UTCEG score recompute
  58. 2026-08-17 13:57 UTCVendor advisory
  59. 2026-08-17 13:57 UTCGHSA enrichment
  60. 2026-08-17 13:47 UTCEPSS rescore
  61. 2026-08-16 14:07 UTCEG score recompute
  62. 2026-08-16 14:07 UTCVendor advisory
  63. 2026-08-16 14:07 UTCGHSA enrichment
  64. 2026-08-16 02:14 UTCEPSS rescore
  65. 2026-08-15 14:16 UTCVendor advisory
  66. 2026-08-15 14:16 UTCGHSA enrichment
  67. 2026-08-14 14:25 UTCEG score recompute
  68. 2026-08-14 14:25 UTCVendor advisory
  69. 2026-08-14 14:25 UTCGHSA enrichment
  70. 2026-08-13 22:00 UTCEPSS rescore
  71. 2026-08-13 14:34 UTCVendor advisory
  72. 2026-08-13 14:34 UTCGHSA enrichment
  73. 2026-08-12 14:44 UTCVendor advisory
  74. 2026-08-12 14:44 UTCGHSA enrichment
  75. 2026-08-11 14:53 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-56850?
CVE-2026-56850 is a medium vulnerability published on July 30, 2026. A flaw in Node.js HTTPS Agent connection reuse can cause PFX object-array key collisions, allowing mutual TLS (mTLS) client identities to be reused across requests configured with different client certificates. This vulnerability affects Node.js 26.x, 24.x, and 22.x.
When was CVE-2026-56850 disclosed?
CVE-2026-56850 was first published in the National Vulnerability Database on July 30, 2026, with the most recent update on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56850 actively exploited?
CVE-2026-56850 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 99.7% of all scored CVEs.
What is the CVSS score of CVE-2026-56850?
CVE-2026-56850 has a CVSS v3 base score of 4.4 (NVD).
How do I remediate CVE-2026-56850?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56850, 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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