CVE-2026-78654

HIGHPre-NVD 7.37.3
EchelonGraph scoreMEDIUM confidence

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

Score 7.3 from GitHub Security Advisory published 2026-08-25. A secondary CVSS source baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this weekElevated

Also known asEUVD-2026-65304 (ENISA EUVD) · GHSA-85f3-5c6p-wf9v (GitHub Security Advisories)Source: ENISA EUVD

7.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 7.3Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

A vulnerability has been found in cleverbrush framework and deep up to 4.4.0. This impacts the function deepExtend of the file libs/deep/src/deepExtend.ts. The manipulation leads to improperly controlled modification of object prototype attributes. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used. Upgrading to version 4.4.1 will fix this issue. The identifier of the patch is 810398c1308c500c3b8b6af380b5a89371389327. You should upgrade the affected component.

CVSS v3
7.3
EG Score
7.3HIGHmedium confidence
EG Risk
64
EG Risk 64/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity73% × 45%
Impact severity (EG Severity): CVSS 7.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.7%
EPSS %ILE
53rd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.3): severity, escalated by confirmed exploitation. This CVE's 7.3 is its impact severity (EG Severity), not escalated.

EG Severity
7.3 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.7% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track 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 public PoC (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

August 25, 2026

Last Modified

September 28, 2026

Advisory Details (3)

Auto-updated Aug 25, 2026
Patch available. Sources: github_pr.
Web page

GitHub - cleverbrush/framework: A collection of lightweight, strongly-typed TypeScript utility libraries — schema validation with type inference, async helpers, deep object operations, object mapping, job scheduling, and more. · GitHub

https://github.com/cleverbrush/framework/
GitHub pull request Patch Available

v4.4.1

Patch available: cleverbrush/framework @cleverbrush/orm@4.4.1 (PR #215 merged 2026-07-13)

https://github.com/cleverbrush/framework/pull/215
Web page

Prototype pollution in deepExtend() via unguarded __proto__ key in recursive merge · Issue #213 · cleverbrush/framework · GitHub

https://github.com/cleverbrush/framework/issues/213

Vendor Advisories for CVE-2026-78654(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 59× 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.

Showing the most recent 100 of 209 refreshes on record for this CVE.

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. None are among the latest 100 rows. The 109 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  3. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  4. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  5. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  6. 2026-10-27 17:29 UTCEG score recompute
  7. 2026-10-27 17:29 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  8. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  9. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  10. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  11. 2026-10-25 14:00 UTCEG score recompute
  12. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  13. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  14. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  15. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  16. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  17. 2026-10-19 18:02 UTCEG score recompute
  18. 2026-10-19 18:02 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  19. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  20. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  21. 2026-10-18 03:11 UTCEG score recompute
  22. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  23. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  24. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  25. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
Show 75 more
  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  2. 2026-10-13 06:46 UTCEG score recompute
  3. 2026-10-13 06:46 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  4. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  5. 2026-10-12 15:36 UTCEG score recompute
  6. 2026-10-11 19:22 UTCEG score recompute
  7. 2026-10-11 16:38 UTCEG score recompute
  8. 2026-10-11 13:57 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  11. 2026-10-10 12:22 UTCEG score recompute
  12. 2026-10-10 12:22 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  13. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  14. 2026-10-09 04:35 UTCEG score recompute
  15. 2026-10-09 04:35 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  16. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  17. 2026-10-08 03:38 UTCEG score recompute
  18. 2026-10-08 03:38 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  19. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  20. 2026-10-07 04:35 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  21. 2026-10-06 16:09 UTCEG score recompute
  22. 2026-10-06 16:09 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  23. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  24. 2026-10-06 02:40 UTCEG score recompute
  25. 2026-10-06 02:40 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  26. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  27. 2026-10-05 09:18 UTCEG score recompute
  28. 2026-10-05 09:18 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  29. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  30. 2026-10-04 20:36 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  31. 2026-10-04 04:54 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  32. 2026-10-03 16:28 UTCEG score recompute
  33. 2026-10-03 16:28 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  34. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  35. 2026-10-02 21:58 UTCEG score recompute
  36. 2026-10-02 21:58 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  37. 2026-10-02 09:33 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  38. 2026-10-01 21:08 UTCEG score recompute
  39. 2026-10-01 21:08 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  40. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  41. 2026-10-01 08:42 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  42. 2026-09-30 20:16 UTCEG score recompute
  43. 2026-09-30 20:16 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  44. 2026-09-30 06:54 UTCEG score recompute
  45. 2026-09-30 06:54 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  46. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  47. 2026-09-29 15:04 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  48. 2026-09-28 23:17 UTCEG score recompute
  49. 2026-09-28 23:17 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  50. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  51. 2026-09-28 11:49 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  52. 2026-09-27 23:24 UTCEG score recompute
  53. 2026-09-27 23:24 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  54. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  55. 2026-09-27 10:58 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  56. 2026-09-26 22:10 UTCEG score recompute
  57. 2026-09-26 22:10 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  58. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  59. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  60. 2026-09-25 11:46 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  61. 2026-09-24 22:16 UTCEG score recompute
  62. 2026-09-24 22:16 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  63. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  64. 2026-09-24 08:24 UTCEG score recompute
  65. 2026-09-24 08:24 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  66. 2026-09-23 19:58 UTCEG score recompute
  67. 2026-09-23 19:58 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  68. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  69. 2026-09-23 07:33 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  70. 2026-09-22 19:08 UTCEG score recompute
  71. 2026-09-22 19:07 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  72. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  73. 2026-09-22 03:47 UTCEG score recompute
  74. 2026-09-22 03:47 UTCGHSA enrichmentGHSA-85f3-5c6p-wf9v · GitHub CVSS 7.3
  75. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.4% · 35th percentile

Frequently asked(5)

What is CVE-2026-78654?
CVE-2026-78654 is a high-severity vulnerability; its CVE record was published on August 25, 2026. A vulnerability has been found in cleverbrush framework and deep up to 4.4.0. This impacts the function deepExtend of the file libs/deep/src/deepExtend.ts. The manipulation leads to improperly controlled modification of object prototype attributes. Remote exploitation of the attack is possible. The…
When was the CVE record for CVE-2026-78654 published?
The CVE record for CVE-2026-78654 was published on August 25, 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 September 28, 2026; the record at its source may have been updated since.
Is CVE-2026-78654 actively exploited?
CVE-2026-78654 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (53rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-78654?
CVE-2026-78654 has a CVSS base score of 7.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-78654?
A fix for CVE-2026-78654 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-78654 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-78654

Explore →

Is Your Infrastructure Affected by CVE-2026-78654?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.