CVE-2026-102992

CRITICALPre-NVD 9.29.2
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (43rd 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
Trending — 4 sources updated this weekElevated

Also known asEUVD-2026-90364 (ENISA EUVD) · GHSA-67c8-pqhq-4rmx (GitHub Security Advisories)Source: ENISA EUVD

9.2EG
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: 0.5%CVSS: 9.2Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

piscina is a node.js worker pool implementation. Prior to 4.9.4, 5.3.2, and 6.0.0-rc.5, Piscina stores ThreadPool.options in src/index.ts as a plain object that inherits from Object.prototype. Applications with a separate prototype-pollution primitive can therefore supply inherited values for security-sensitive options that do not have own defaults. An inherited execArgv value is passed to the Node.js Worker constructor and can preload attacker-controlled code in worker threads, an inherited loadBalancer function can execute during task scheduling, and inherited env values can alter worker environments. This issue is fixed in versions 4.9.4, 5.3.2, and 6.0.0-rc.5.

CVSS v3
9.2
EG Score
9.2CRITICALmedium confidence
EG Risk
57
EG Risk 57/100

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)
Severity92% × 45%
Impact severity (EG Severity): CVSS 9.2 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.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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
0.5%
EPSS %ILE
43rd
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 (9.2): severity, escalated by confirmed exploitation. This CVE's 9.2 is its impact severity (EG Severity), not escalated.

EG Severity
9.2 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). 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, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade 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, Track* at medium and Attend at high mission impact.

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 no (CISA Vulnrichment) · Technical impact total (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; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (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

September 30, 2026

Last Modified

September 30, 2026

Advisory Details (8)

Auto-updated Sep 30, 2026
Patch available. Sources: github_commit, github_release, github.
GitHub release Patch Available

v6.0.0-rc.5

Patch available: piscinajs/piscina v6.0.0-rc.5 (pre-release)

https://github.com/piscinajs/piscina/releases/tag/v6.0.0-rc.5
GitHub release Patch Available

v5.3.2

Patch available: piscinajs/piscina v5.3.2

https://github.com/piscinajs/piscina/releases/tag/v5.3.2
GitHub release Patch Available

v4.9.4

Patch available: piscinajs/piscina v4.9.4

https://github.com/piscinajs/piscina/releases/tag/v4.9.4
GitHub commit

commit bebbda255c29 (piscinajs/piscina)

Fix landed in piscinajs/piscina commit bebbda255c29 — awaiting tagged release

https://github.com/piscinajs/piscina/commit/bebbda255c2981cecddd36b171b94be2fd41c9a6
GitHub commit Patch Available

commit 5be7bbb19e37 (piscinajs/piscina)

Patch available: piscinajs/piscina v6.0.0-rc.5 (contains commit 5be7bbb19e37)

https://github.com/piscinajs/piscina/commit/5be7bbb19e3787bb698862cd516121a578d690f7
GitHub commit Patch Available

commit 2f69f67159a0 (piscinajs/piscina)

Patch available: piscinajs/piscina v5.3.2 (contains commit 2f69f67159a0)

https://github.com/piscinajs/piscina/commit/2f69f67159a0e48b38fd61fa4a91c2fdc19fff72
GitHub commit Patch Available

commit 0cb12fca37f5 (piscinajs/piscina)

Patch available: piscinajs/piscina v4.9.4 (contains commit 0cb12fca37f5)

https://github.com/piscinajs/piscina/commit/0cb12fca37f526065b072592afe954574dcc656f
GitHub advisoryMentions a patch (unverified)

Prototype-pollution gadget in ThreadPool.options allows RCE via execArgv / loadBalancer / env · Advisory · piscinajs/piscina · GitHub

https://github.com/piscinajs/piscina/security/advisories/GHSA-67c8-pqhq-4rmx

Patch Availability(3)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
npmpiscina @ 5.3.2 (fixes >= 5.0.0, < 5.3.2)—ghsa
npmpiscina @ 4.9.4 (fixes < 4.9.4)—ghsa
npmpiscina @ 6.0.0-rc.5 (fixes >= 6.0.0-rc.1, < 6.0.0-rc.5)—ghsa

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

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
piscina—
  • 5.0.0 up to 5.3.2: fixed in 5.3.2
  • every version up to 4.9.4: fixed in 4.9.4
  • 6.0.0-rc.1 up to 6.0.0-rc.5: fixed in 6.0.0-rc.5
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 24× in last 7d / 127× 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 140 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 40 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 14:29 UTCEG score recompute
  2. 2026-11-02 14:29 UTCVendor advisory
  3. 2026-11-02 14:29 UTCGHSA enrichmentGHSA-67c8-pqhq-4rmx · GitHub severity CRITICAL
  4. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  5. 2026-11-01 14:14 UTCVendor advisory
  6. 2026-11-01 14:14 UTCGHSA enrichmentGHSA-67c8-pqhq-4rmx · GitHub severity CRITICAL
  7. 2026-11-01 08:00 UTCGHSA enrichmentGHSA-67c8-pqhq-4rmx · GitHub severity CRITICAL
  8. 2026-11-01 08:00 UTCEG score recompute
  9. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  10. 2026-10-31 13:59 UTCEG score recompute
  11. 2026-10-31 13:59 UTCVendor advisory
  12. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  13. 2026-10-30 13:45 UTCEG score recompute
  14. 2026-10-30 13:45 UTCVendor advisory
  15. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  16. 2026-10-29 13:19 UTCEG score recompute
  17. 2026-10-29 13:19 UTCVendor advisory
  18. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  19. 2026-10-28 13:02 UTCEG score recompute
  20. 2026-10-28 13:02 UTCVendor advisory
  21. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  22. 2026-10-27 12:47 UTCEG score recompute
  23. 2026-10-27 12:47 UTCVendor advisory
  24. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  25. 2026-10-26 13:15 UTCEG score recompute
Show 75 more
  1. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  2. 2026-10-25 14:56 UTCEG score recompute
  3. 2026-10-25 12:49 UTCEG score recompute
  4. 2026-10-25 12:49 UTCVendor advisory
  5. 2026-10-24 16:31 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  6. 2026-10-24 12:31 UTCEG score recompute
  7. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  8. 2026-10-23 12:14 UTCEG score recompute
  9. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  10. 2026-10-22 11:56 UTCEG score recompute
  11. 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  12. 2026-10-21 11:40 UTCEG score recompute
  13. 2026-10-21 11:40 UTCVendor advisory
  14. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  15. 2026-10-20 11:26 UTCEG score recompute
  16. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  17. 2026-10-19 12:14 UTCEG score recompute
  18. 2026-10-19 12:14 UTCVendor advisory
  19. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  20. 2026-10-18 10:24 UTCVendor advisory
  21. 2026-10-18 05:10 UTCEG score recompute
  22. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  23. 2026-10-17 08:24 UTCEG score recompute
  24. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  25. 2026-10-16 08:08 UTCEG score recompute
  26. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  27. 2026-10-15 07:09 UTCEG score recompute
  28. 2026-10-15 07:09 UTCVendor advisory
  29. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  30. 2026-10-14 03:03 UTCEG score recompute
  31. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  32. 2026-10-12 23:08 UTCVendor advisory
  33. 2026-10-12 16:40 UTCEG score recompute
  34. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  35. 2026-10-12 04:10 UTCVendor advisory
  36. 2026-10-11 23:46 UTCVendor advisory
  37. 2026-10-11 19:24 UTCEG score recompute
  38. 2026-10-11 19:24 UTCVendor advisory
  39. 2026-10-11 18:28 UTCEG score recompute
  40. 2026-10-11 15:05 UTCVendor advisory
  41. 2026-10-11 15:01 UTCEG score recompute
  42. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  43. 2026-10-11 10:46 UTCVendor advisory
  44. 2026-10-11 06:22 UTCVendor advisory
  45. 2026-10-11 01:58 UTCVendor advisory
  46. 2026-10-10 21:38 UTCEG score recompute
  47. 2026-10-10 21:38 UTCVendor advisory
  48. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  49. 2026-10-10 12:50 UTCVendor advisory
  50. 2026-10-10 08:30 UTCVendor advisory
  51. 2026-10-10 04:10 UTCVendor advisory
  52. 2026-10-09 23:49 UTCEG score recompute
  53. 2026-10-09 23:49 UTCVendor advisory
  54. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  55. 2026-10-09 19:30 UTCVendor advisory
  56. 2026-10-09 15:11 UTCVendor advisory
  57. 2026-10-09 10:09 UTCVendor advisory
  58. 2026-10-09 05:49 UTCVendor advisory
  59. 2026-10-09 01:29 UTCVendor advisory
  60. 2026-10-08 21:09 UTCEG score recompute
  61. 2026-10-08 21:09 UTCVendor advisory
  62. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  63. 2026-10-08 16:49 UTCVendor advisory
  64. 2026-10-08 11:52 UTCVendor advisory
  65. 2026-10-08 07:32 UTCVendor advisory
  66. 2026-10-08 03:14 UTCEG score recompute
  67. 2026-10-08 03:14 UTCVendor advisory
  68. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  69. 2026-10-07 22:54 UTCVendor advisory
  70. 2026-10-07 18:35 UTCVendor advisory
  71. 2026-10-07 14:16 UTCVendor advisory
  72. 2026-10-07 09:33 UTCVendor advisory
  73. 2026-10-07 05:13 UTCVendor advisory
  74. 2026-10-07 00:54 UTCVendor advisory
  75. 2026-10-06 20:35 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-102992?
CVE-2026-102992 is a critical-severity vulnerability; its CVE record was published on September 30, 2026. piscina is a node.js worker pool implementation. Prior to 4.9.4, 5.3.2, and 6.0.0-rc.5, Piscina stores ThreadPool.options in src/index.ts as a plain object that inherits from Object.prototype. Applications with a separate prototype-pollution primitive can therefore supply inherited values for…
When was the CVE record for CVE-2026-102992 published?
The CVE record for CVE-2026-102992 was published on September 30, 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 30, 2026; the record at its source may have been updated since.
Is CVE-2026-102992 actively exploited?
CVE-2026-102992 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (43rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-102992?
CVE-2026-102992 has a CVSS base score of 9.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-102992?
A fix for CVE-2026-102992 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-102992 are linked in the Vendor Advisories panel on this page.

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