CVE-2026-73562

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (40th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.5Exploit: None knownExposed 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 6.13.10, 7.8.10, 8.24.1, and 9.7.2, passing a user-controlled update such as MyModel.updateOne(filter, req.body) can exploit Mongoose update casting with a __proto__.x dotted path under $set. Schema.prototype.path and Schema.prototype._getPathType can treat inherited properties of schema.paths and schema.nested as schema types, allowing the casting process to set $fullPath and $parentSchemaDocArray on Object.prototype before throwing. This prototype pollution makes those properties visible on newly created objects and can cause application integrity and availability impacts. This issue is fixed in versions 6.13.10, 7.8.10, 8.24.1, and 9.7.2.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
44
EG Risk 44/100CISA SSVC

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
Severity65% × 45%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
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
41st
KEV
Not listed

CISA SSVCTrack 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 none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 13, 2026

Last Modified

September 18, 2026

Advisory Details (5)

Auto-updated Aug 13, 2026
Patch available. Sources: github, github_commit.
github_commit

commit fab793b74713 (Automattic/mongoose)

Fix landed in Automattic/mongoose commit fab793b74713 — awaiting tagged release

https://github.com/Automattic/mongoose/commit/fab793b747131c68927888cba41cf3e6d6593740
github_commit Patch Available

commit 953d085bee5a (Automattic/mongoose)

Patch available: Automattic/mongoose 8.24.1 (contains commit 953d085bee5a)

https://github.com/Automattic/mongoose/commit/953d085bee5a16b5d6c5af33a156e6314d6d9a45
github_commit Patch Available

commit 7285466b860d (Automattic/mongoose)

Patch available: Automattic/mongoose 7.8.10 (contains commit 7285466b860d)

https://github.com/Automattic/mongoose/commit/7285466b860d3b511f8d07b2ab72656703ee707a
github_commit Patch Available

commit 35a3f33bc9a0 (Automattic/mongoose)

Patch available: Automattic/mongoose 9.7.2 (contains commit 35a3f33bc9a0)

https://github.com/Automattic/mongoose/commit/35a3f33bc9a0a28671f99e3c5010000425650d0f
githubMentions a patch (unverified)

Prototype pollution in mongoose update casting via __proto__-prefixed dotted path (Schema._getSchema/path getter) · Advisory · Automattic/mongoose · GitHub

https://github.com/Automattic/mongoose/security/advisories/GHSA-664h-wqgq-64gw

Vendor Advisories for CVE-2026-73562(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
mongoose—
  • every version up to 6.13.10: fixed in 6.13.10
  • 7.0.0 up to 7.8.10: fixed in 7.8.10
  • 8.0.0 up to 8.24.1: fixed in 8.24.1
  • 9.0.0 up to 9.7.2: fixed in 9.7.2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 45× 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.

  1. 2026-10-10 20:00 UTCEPSS rescore
  2. 2026-10-09 20:07 UTCEPSS rescore
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  5. 2026-10-06 17:56 UTCEG score recompute
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  1. 2026-09-22 11:54 UTCEG score recompute
  2. 2026-09-21 21:09 UTCEPSS rescore
  3. 2026-09-21 14:07 UTCEG score recompute
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  5. 2026-09-19 17:57 UTCEG score recompute
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  29. 2026-09-04 05:07 UTCEPSS rescore
  30. 2026-09-02 23:11 UTCEG score recompute
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  44. 2026-08-27 14:25 UTCEPSS rescore
  45. 2026-08-26 14:59 UTCEG score recompute
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  47. 2026-08-25 17:12 UTCEG score recompute
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  49. 2026-08-24 19:14 UTCEG score recompute
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  64. 2026-08-16 14:56 UTCEPSS rescore
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  66. 2026-08-16 02:15 UTCEPSS rescore
  67. 2026-08-15 17:24 UTCEG score recompute
  68. 2026-08-15 01:31 UTCEPSS rescore
  69. 2026-08-14 19:36 UTCEG score recompute
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  71. 2026-08-13 18:18 UTCEG score recompute
  72. 2026-08-13 17:47 UTCEG score recompute
  73. 2026-08-13 17:46 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-73562?
CVE-2026-73562 is a medium vulnerability published on August 13, 2026. Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Prior to 6.13.10, 7.8.10, 8.24.1, and 9.7.2, passing a user-controlled update such as MyModel.updateOne(filter, req.body) can exploit Mongoose update casting with a proto.x dotted path under $set.…
When was CVE-2026-73562 disclosed?
CVE-2026-73562 was first published on August 13, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73562 actively exploited?
CVE-2026-73562 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (41st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73562?
CVE-2026-73562 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73562?
A fix for CVE-2026-73562 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-73562 are linked in the Vendor Advisories panel on this page.

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