CVE-2026-61834

MEDIUMPre-NVD 4.34.3
EchelonGraph scoreLOW confidence

This medium-severity CVE scores 4.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). 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: secondary
Elevated
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 4.3Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

scim-patch is a library for applying SCIM patch operations. Prior to 0.9.2, navigate() reads inherited properties and assign() uses prototype-chain membership checks while resolving attacker-controlled SCIM PATCH paths. A path or one of the dotted value keys beginning with an inherited property such as toString can therefore traverse into a shared built-in function object and add attacker-controlled properties, causing process-global mutation that may affect application logic reading inherited-method properties. This issue is fixed in version 0.9.2.

CVSS v3
4.3
EG Score
4.3(low)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

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
Severity43% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
—
EPSS %ILE
—
KEV
Not listed

Published

September 23, 2026

Last Modified

September 23, 2026

Advisory Details (4)

Auto-updated Sep 23, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github, github_pr.
github_release Patch Available

v0.9.2

Patch available: thomaspoignant/scim-patch v0.9.2

https://github.com/thomaspoignant/scim-patch/releases/tag/v0.9.2
github_commit Patch Available

commit c86474f7a9b1 (thomaspoignant/scim-patch)

Patch available: thomaspoignant/scim-patch v0.9.2 (contains commit c86474f7a9b1)

https://github.com/thomaspoignant/scim-patch/commit/c86474f7a9b16191d939f59ba94eca6c6e63044b
github_pr Patch Available

fix: prevent prototype pollution via inherited properties (GHSA-2mhw-wcx5-v3xj)

Patch available: thomaspoignant/scim-patch v0.9.2 (PR #1127 merged 2026-06-24)

https://github.com/thomaspoignant/scim-patch/pull/1127
github Patch Available🟡 PoC Available

Mutation of Inherited Built-in Method Objects · Advisory · thomaspoignant/scim-patch · GitHub

https://github.com/thomaspoignant/scim-patch/security/advisories/GHSA-2mhw-wcx5-v3xj

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 5× 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. 2026-09-23 17:19 UTCEG score recompute
  2. 2026-09-23 16:40 UTCEG score recompute
  3. 2026-09-23 15:17 UTCEG score recompute
  4. 2026-09-23 14:25 UTCEG score recompute
  5. 2026-09-23 14:24 UTCMITRE cvelistV5first tracked

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Frequently asked(4)

What is CVE-2026-61834?
CVE-2026-61834 is a medium vulnerability published on September 23, 2026. scim-patch is a library for applying SCIM patch operations. Prior to 0.9.2, navigate() reads inherited properties and assign() uses prototype-chain membership checks while resolving attacker-controlled SCIM PATCH paths. A path or one of the dotted value keys beginning with an inherited property…
When was CVE-2026-61834 disclosed?
CVE-2026-61834 was first published in the National Vulnerability Database on September 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-61834?
CVE-2026-61834 has a CVSS v3 base score of 4.3 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-61834?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-61834, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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