CVE-2026-56846

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-04. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw in Node.js HTTP/2 handling can cause HTTP/2 retained header blocks evade maxSessionMemory and enable remote memory exhaustion. This vulnerability affects Node.js 24.x and 22.x.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

August 4, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Aug 4, 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-2026-56846(6)

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

Patch Availability(10)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatnodejs22-1:22.23.2-1.el10_02026-09-08redhat
redhatnodejs:22-9060020260901085634.rhel92026-09-02redhat
redhatnodejs:24-8100020260819113942.6d8804032026-09-02redhat
redhatnodejs:22-8100020260819113925.6d8804032026-09-01redhat
redhatnodejs22-1:22.23.2-1.el10_22026-08-31redhat
redhatnodejs:24-9080020260819113946.rhel92026-08-31redhat
redhatnodejs24-1:24.19.0-1.el10_22026-08-31redhat
redhatnodejs:22-9080020260819113937.rhel92026-08-31redhat
redhatnodejs24-main-24.18.1-0.1.hum12026-07-30redhat
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

(5)

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 37× in last 7d / 145× 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 241 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-56846?
CVE-2026-56846 is a high vulnerability published on August 4, 2026. A flaw in Node.js HTTP/2 handling can cause HTTP/2 retained header blocks evade maxSessionMemory and enable remote memory exhaustion. This vulnerability affects Node.js 24.x and 22.x.
When was CVE-2026-56846 disclosed?
CVE-2026-56846 was first published in the National Vulnerability Database on August 4, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56846 actively exploited?
CVE-2026-56846 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 58.2% of all scored CVEs.
What is the CVSS score of CVE-2026-56846?
CVE-2026-56846 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-56846?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56846, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-56846

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