CVE-2026-15699

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-07-14. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: Elevated riskExposed: 0

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

A vulnerability was identified in spencermountain compromise up to 14.15.1. Affected is the function nlp.extend of the file src/API/extend.js of the component Public Root API. The manipulation of the argument plugin leads to improperly controlled modification of object prototype attributes. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. The identifier of the patch is b4644ab7179700df0607521f61c1ee9b5f78d89d. Applying a patch is the recommended action to fix this issue. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

CVSS v3
6.3
EG Score
6.3(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity63% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

July 14, 2026

Last Modified

July 14, 2026

Advisory Details (3)

Auto-updated Jul 15, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit.
generic🟡 PoC Available

Prototype Pollution via `nlp.extend()` Plugin Model Merge · Issue #1208 · spencermountain/compromise · GitHub

https://github.com/spencermountain/compromise/issues/1208
github_commit Patch Available

commit b4644ab71797 (spencermountain/compromise)

Patch available: spencermountain/compromise 14.16.0 (contains commit b4644ab71797)

https://github.com/spencermountain/compromise/commit/b4644ab7179700df0607521f61c1ee9b5f78d89d
generic

GitHub - spencermountain/compromise: modest natural-language processing · GitHub

https://github.com/spencermountain/compromise/

Vendor Advisories for CVE-2026-15699(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 55× 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.

Showing the most recent 100 of 148 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-15699?
CVE-2026-15699 is a medium vulnerability published on July 14, 2026. A vulnerability was identified in spencermountain compromise up to 14.15.1. Affected is the function nlp.extend of the file src/API/extend.js of the component Public Root API. The manipulation of the argument plugin leads to improperly controlled modification of object prototype attributes. Remote…
When was CVE-2026-15699 disclosed?
CVE-2026-15699 was first published in the National Vulnerability Database on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15699 actively exploited?
CVE-2026-15699 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 61.8% of all scored CVEs.
What is the CVSS score of CVE-2026-15699?
CVE-2026-15699 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-15699?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15699, 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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