CVE-2026-85625

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-04. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: None knownExposed: 0

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

sift (sift.js) 17.1.3 enumerates query keys with for...in, which walks the object prototype chain, and dispatches any matched operator key including $where. The $where operation compiles a string value into a function using new Function unless CSP_ENABLED is set (not set by default). As a result, if a prototype-pollution primitive elsewhere in the process sets Object.prototype.$where to a malicious string, even benign filter calls such as sift({}) execute arbitrary JavaScript. Additionally, passing an untrusted query object containing a string $where directly to sift results in code execution under the default configuration.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
45%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 14, 2026

Advisory Details (4)

Auto-updated Sep 4, 2026
No patch confirmed yet.
generic

sift 17.1.3 Prototype Pollution Remote Code Execution via $where | Advisories | VulnCheck

https://www.vulncheck.com/advisories/sift-17.1.3-prototype-pollution-remote-code-execution-via-where
generic

sift.js/src/core.ts at v17.1.3 · crcn/sift.js · GitHub

https://github.com/crcn/sift.js/blob/v17.1.3/src/core.ts
generic

GitHub - crcn/sift.js: Use Mongodb queries in JavaScript · GitHub

https://github.com/crcn/sift.js
generic

Prototype-pollution to RCE gadget via for...in query enumeration and string $where (17.1.3) · Issue #276 · crcn/sift.js · GitHub

https://github.com/crcn/sift.js/issues/276

Vendor Advisories for CVE-2026-85625(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 31× in last 7d / 63× 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. 2026-09-19 21:52 UTCEG score recompute
  2. 2026-09-19 21:52 UTCGHSA enrichment
  3. 2026-09-19 09:55 UTCGHSA enrichment
  4. 2026-09-18 21:22 UTCEG score recompute
  5. 2026-09-18 21:22 UTCGHSA enrichment
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-18 09:04 UTCGHSA enrichment
  8. 2026-09-17 21:09 UTCEG score recompute
  9. 2026-09-17 21:09 UTCGHSA enrichment
  10. 2026-09-17 19:32 UTCEPSS rescore
  11. 2026-09-17 09:14 UTCGHSA enrichment
  12. 2026-09-16 21:19 UTCEG score recompute
  13. 2026-09-16 21:19 UTCGHSA enrichment
  14. 2026-09-16 14:09 UTCEPSS rescore
  15. 2026-09-16 09:01 UTCEG score recompute
  16. 2026-09-16 09:01 UTCGHSA enrichment
  17. 2026-09-16 05:15 UTCEPSS rescore
  18. 2026-09-15 20:17 UTCGHSA enrichment
  19. 2026-09-15 08:22 UTCEG score recompute
  20. 2026-09-15 08:22 UTCGHSA enrichment
  21. 2026-09-15 03:12 UTCEPSS rescore
  22. 2026-09-15 03:12 UTCEPSS rescore
  23. 2026-09-14 20:27 UTCEG score recompute
  24. 2026-09-14 20:27 UTCGHSA enrichment
  25. 2026-09-14 19:40 UTCEG score recompute
Show 38 more
  1. 2026-09-14 19:40 UTCGHSA enrichment
  2. 2026-09-14 15:23 UTCGHSA enrichment
  3. 2026-09-14 03:25 UTCEG score recompute
  4. 2026-09-14 03:25 UTCGHSA enrichment
  5. 2026-09-13 15:30 UTCGHSA enrichment
  6. 2026-09-13 03:35 UTCGHSA enrichment
  7. 2026-09-12 15:40 UTCEG score recompute
  8. 2026-09-12 15:40 UTCGHSA enrichment
  9. 2026-09-12 03:45 UTCGHSA enrichment
  10. 2026-09-11 15:50 UTCEG score recompute
  11. 2026-09-11 15:50 UTCGHSA enrichment
  12. 2026-09-11 14:53 UTCEPSS rescore
  13. 2026-09-11 14:53 UTCEPSS rescore
  14. 2026-09-11 03:54 UTCGHSA enrichment
  15. 2026-09-10 15:59 UTCEG score recompute
  16. 2026-09-10 15:59 UTCGHSA enrichment
  17. 2026-09-10 04:16 UTCGHSA enrichment
  18. 2026-09-09 16:20 UTCGHSA enrichment
  19. 2026-09-09 04:15 UTCEG score recompute
  20. 2026-09-09 04:15 UTCGHSA enrichment
  21. 2026-09-08 22:01 UTCEPSS rescore
  22. 2026-09-08 16:20 UTCGHSA enrichment
  23. 2026-09-08 02:55 UTCEG score recompute
  24. 2026-09-08 02:55 UTCGHSA enrichment
  25. 2026-09-07 14:59 UTCGHSA enrichment
  26. 2026-09-07 03:03 UTCGHSA enrichment
  27. 2026-09-06 15:07 UTCEG score recompute
  28. 2026-09-06 15:07 UTCGHSA enrichment
  29. 2026-09-06 13:48 UTCEPSS rescore
  30. 2026-09-06 03:12 UTCEG score recompute
  31. 2026-09-06 03:12 UTCGHSA enrichment
  32. 2026-09-05 15:31 UTCEPSS rescore
  33. 2026-09-05 15:15 UTCGHSA enrichment
  34. 2026-09-05 03:20 UTCEG score recompute
  35. 2026-09-05 03:20 UTCGHSA enrichment
  36. 2026-09-04 15:25 UTCEG score recompute
  37. 2026-09-04 14:45 UTCEG score recompute
  38. 2026-09-04 14:44 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-85625?
CVE-2026-85625 is a high vulnerability published on September 4, 2026. sift (sift.js) 17.1.3 enumerates query keys with for...in, which walks the object prototype chain, and dispatches any matched operator key including $where. The $where operation compiles a string value into a function using new Function unless CSP_ENABLED is set (not set by default). As a result,…
When was CVE-2026-85625 disclosed?
CVE-2026-85625 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85625 actively exploited?
CVE-2026-85625 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 55.3% of all scored CVEs.
What is the CVSS score of CVE-2026-85625?
CVE-2026-85625 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-85625?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85625, 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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