CVE-2026-125117

HIGHPre-NVD 8.28.2
EchelonGraph scoreHIGH confidence

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

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-11-10. A secondary CVSS source baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Elevated

Also known asEUVD-2026-120498 (ENISA EUVD) · GHSA-8332-j7wj-wjw4 (GitHub Security Advisories)Source: ENISA EUVD

8.2EG
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: 0.6%CVSS: 8.2Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Prior to 6.13.12, 7.8.13, 8.24.7, and 9.11.4, Mongoose can descend into inherited properties while loading database documents in init(), setting dotted paths in $__set, and merging update documents in utils.mergeClone. Attacker-controlled keys such as toString or valueOf can therefore cause Mongoose to write into shared built-in functions instead of an own property. A crafted document, Mixed path, non-strict document or subdocument, findOneAndReplace() replacement, chained update, or Query.prototype.merge() source can overwrite Object.prototype.toString.call, causing later queries on unrelated models to fail until the process restarts. Separately, when an attacker controls the dotted path passed to doc.set(path, value) for a subdocument configured with strict: false, descent through $__set can reach $__schema and alter shared validators or schema options for later documents. Mongoose already blocks __proto__, constructor, and prototype, so this issue overwrites properties on reachable shared objects rather than adding new properties directly to Object.prototype. This issue is fixed in versions 6.13.12, 7.8.13, 8.24.7, and 9.11.4.

CVSS v3
8.2
EG Score
8.2HIGHhigh confidence
EG Risk
68
EG Risk 68/100

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)
Severity82% × 45%
Impact severity (EG Severity): CVSS 8.2 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.
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
0.6%
EPSS %ILE
48th
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 (8.2): severity, escalated by confirmed exploitation. This CVE's 8.2 is its impact severity (EG Severity), not escalated.

EG Severity
8.2 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). 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

November 9, 2026

Last Modified

November 12, 2026

Advisory Details (8)

Auto-updated Nov 9, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
GitHub release Patch Available

8.24.7

Patch available: Automattic/mongoose 8.24.7

https://github.com/Automattic/mongoose/releases/tag/8.24.7
GitHub commit

commit 8eb74cb4a550 (Automattic/mongoose)

Fix landed in Automattic/mongoose commit 8eb74cb4a550 — awaiting tagged release

https://github.com/Automattic/mongoose/commit/8eb74cb4a550cbe0225963b07aebacbd999d4b74
GitHub commit

commit 8cee51beead5 (Automattic/mongoose)

Fix landed in Automattic/mongoose commit 8cee51beead5 — awaiting tagged release

https://github.com/Automattic/mongoose/commit/8cee51beead554df1f3d05645edb439c69eb2a9b
GitHub commit

commit 85cf897105ed (Automattic/mongoose)

Fix landed in Automattic/mongoose commit 85cf897105ed — awaiting tagged release

https://github.com/Automattic/mongoose/commit/85cf897105edfeb5f56be42a18a68704434cac82
GitHub commit

commit 3cb702b8d079 (Automattic/mongoose)

Fix landed in Automattic/mongoose commit 3cb702b8d079 — awaiting tagged release

https://github.com/Automattic/mongoose/commit/3cb702b8d079c3e267f0b10f41673a1590f703c8
GitHub commit Patch Available

commit 2a195d19a4dd (Automattic/mongoose)

Patch available: Automattic/mongoose 9.11.4 (contains commit 2a195d19a4dd)

https://github.com/Automattic/mongoose/commit/2a195d19a4dd240f039a0a226614d5804e8187ee
GitHub commit Patch Available

commit 18b5513dd463 (Automattic/mongoose)

Patch available: Automattic/mongoose 8.24.7 (contains commit 18b5513dd463)

https://github.com/Automattic/mongoose/commit/18b5513dd463731a2caf0d3395ef1d9eb0735f50
GitHub advisoryMentions a patch (unverified)🟡 PoC Available

Mongoose walks into inherited properties when hydrating, setting, and merging, allowing overwrites of built-in functions (denial of service) and shared schema state · Advisory · Automattic/mongoose · GitHub

https://github.com/Automattic/mongoose/security/advisories/GHSA-8332-j7wj-wjw4

Vendor Advisories for CVE-2026-125117(1)

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

Patch Availability(4)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
npmmongoose @ 6.13.12 (fixes < 6.13.12)—ghsa
npmmongoose @ 7.8.13 (fixes >= 7.0.0, < 7.8.13)—ghsa
npmmongoose @ 8.24.7 (fixes >= 8.0.0, < 8.24.7)—ghsa
npmmongoose @ 9.11.4 (fixes >= 9.0.0, < 9.11.4)—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
mongoose—
  • every version up to 6.13.12: fixed in 6.13.12
  • 7.0.0 up to 7.8.13: fixed in 7.8.13
  • 8.0.0 up to 8.24.7: fixed in 8.24.7
  • 9.0.0 up to 9.11.4: fixed in 9.11.4
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 7× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

  1. 2026-11-12 19:28 UTCEchelonGraph re-scored
  2. 2026-11-12 19:28 UTCGHSA enrichmentGHSA-8332-j7wj-wjw4 · GitHub severity HIGH · GitHub CVSS 8.2
  3. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  4. 2026-11-11 16:38 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  5. 2026-11-11 00:15 UTCEchelonGraph re-scored
  6. 2026-11-11 00:15 UTCGHSA enrichmentGHSA-8332-j7wj-wjw4 · GitHub severity HIGH · GitHub CVSS 8.2
  7. 2026-11-10 17:27 UTCEchelonGraph re-scored
  8. 2026-11-10 16:46 UTCEchelonGraph re-scored
  9. 2026-11-10 16:42 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  10. 2026-11-10 16:26 UTCEchelonGraph re-scored
  11. 2026-11-09 23:00 UTCENISA EUVD ID recordedEUVD-2026-120498 · Source: ENISA EUVD
  12. 2026-11-09 22:30 UTCEchelonGraph re-scoredFirst assessed: 8.2 HIGH
  13. 2026-11-09 22:29 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-125117?
CVE-2026-125117 is a high-severity vulnerability; its CVE record was published on November 9, 2026. Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Prior to 6.13.12, 7.8.13, 8.24.7, and 9.11.4, Mongoose can descend into inherited properties while loading database documents in init(), setting dotted paths in $__set, and merging update documents in…
When was the CVE record for CVE-2026-125117 published?
The CVE record for CVE-2026-125117 was published on November 9, 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 November 12, 2026; the record at its source may have been updated since.
Is CVE-2026-125117 actively exploited?
CVE-2026-125117 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (48th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-125117?
CVE-2026-125117 has a CVSS base score of 8.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-125117?
A fix for CVE-2026-125117 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-125117 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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