CVE-2026-54335

LOWPre-NVD 3.73.7
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This low-severity CVE scores 3.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (31st percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
3.7EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 3.7Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript. In 5.0.44 and earlier, the _.merge(target, source) utility exported by @feathersjs/commons recursively merges source into target by iterating Object.keys(source). When source was produced by JSON.parse and contains a __proto__, constructor, or prototype key, that key is returned as an own-enumerable property; the recursive merge then resolves target['__proto__'] to Object.prototype and writes attacker-supplied properties onto it, polluting the prototype for all plain objects in the process for the lifetime of the Node process. This issue is fixed in version 5.0.45.

CVSS v3
3.7
EG Score
3.7LOWmedium confidence
EG Risk
17
EG Risk 17/100

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 (value × EchelonGraph’s weight)
Severity37% × 45%
The EG Score, 3.7 of 10.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
31st
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track 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). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 14, 2026

Last Modified

July 23, 2026

References (4)

Vendor Advisories for CVE-2026-54335(1)

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

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
@feathersjs/commons—
  • every version up to 5.0.45: fixed in 5.0.45
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 32× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 99 is merged into the row it repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  3. 2026-10-12 15:56 UTCEG score recompute
  4. 2026-10-11 19:39 UTCEG score recompute
  5. 2026-10-11 16:54 UTCEG score recompute
  6. 2026-10-11 14:18 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  10. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  14. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  15. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  16. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  17. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  18. 2026-10-01 15:05 UTCEG score recompute
  19. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  20. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  21. 2026-09-28 08:54 UTCEG score recompute
  22. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  23. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  24. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  25. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
Show 73 more
  1. 2026-09-23 03:29 UTCEG score recompute
  2. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  3. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  4. 2026-09-18 04:51 UTCEG score recompute
  5. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  6. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  7. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  8. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  9. 2026-09-11 21:55 UTCEG score recompute
  10. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  11. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  12. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  13. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  14. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  15. 2026-09-05 21:00 UTCEG score recompute
  16. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  17. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  18. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  19. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  20. 2026-08-31 04:40 UTCEG score recompute
  21. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  22. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  23. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  24. 2026-08-27 21:29 UTCEG score recompute
  25. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  26. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  27. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  28. 2026-08-24 11:39 UTCEG score recompute
  29. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  30. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  31. 2026-08-21 05:35 UTCEG score recompute
  32. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  33. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  34. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  35. 2026-08-17 23:30 UTCEG score recompute
  36. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  37. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  38. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  39. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  40. 2026-08-14 17:25 UTCEG score recompute
  41. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  42. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  43. 2026-08-11 11:01 UTCEG score recompute
  44. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  45. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  46. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  47. 2026-08-08 04:57 UTCEG score recompute
  48. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  49. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  50. 2026-08-04 22:52 UTCEG score recompute
  51. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  52. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  53. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  54. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  55. 2026-08-01 16:48 UTCEG score recompute
  56. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  57. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  58. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  59. 2026-07-29 10:44 UTCEG score recompute
  60. 2026-07-28 15:37 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  61. 2026-07-26 14:54 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  62. 2026-07-26 04:39 UTCEG score recompute
  63. 2026-07-25 14:18 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  64. 2026-07-24 14:18 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  65. 2026-07-23 14:18 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  66. 2026-07-23 03:19 UTCEG score recompute
  67. 2026-07-22 14:08 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  68. 2026-07-21 15:25 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  69. 2026-07-20 17:08 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  70. 2026-07-19 14:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  71. 2026-07-19 02:38 UTCEG score recompute
  72. 2026-07-19 02:29 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  73. 2026-07-14 19:56 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-54335?
CVE-2026-54335 is a low-severity vulnerability; its CVE record was published on July 14, 2026. Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript. In 5.0.44 and earlier, the _.merge(target, source) utility exported by @feathersjs/commons recursively merges source into target by iterating Object.keys(source). When source was produced by…
When was the CVE record for CVE-2026-54335 published?
The CVE record for CVE-2026-54335 was published on July 14, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 23, 2026; the record at its source may have been updated since.
Is CVE-2026-54335 actively exploited?
CVE-2026-54335 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-54335?
CVE-2026-54335 has a CVSS base score of 3.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-54335?
A fix for CVE-2026-54335 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-54335 are linked in the Vendor Advisories panel on this page.

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