CVE-2026-87988

CRITICALPre-NVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 83% of all CVEs by exploit prediction. 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
Trending — 3 sources updated this week
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 10.0Exploit: None knownExposed: 0

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

An arbitrary file access vulnerability in Mistral Vibe allows an attacker to bypass workspace restrictions through commands classified as unconditionally allowed. Missing path validation for these commands enables access to files outside the active workspace without user approval.

CVSS v3
10.0
EG Score
10.0(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: 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
Severity100% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

September 11, 2026

Last Modified

September 11, 2026

Advisory Details (1)

Auto-updated Sep 18, 2026
No patch confirmed yet.
generic
https://www.hiddenlayer.com/sai-security-advisory/2026-09-mistral-vibe6

Vendor Advisories for CVE-2026-87988(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 52× in last 7d / 68× 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. 2026-09-20 03:25 UTCGHSA enrichment
  2. 2026-09-19 23:09 UTCGHSA enrichment
  3. 2026-09-19 18:53 UTCEG score recompute
  4. 2026-09-19 18:52 UTCGHSA enrichment
  5. 2026-09-19 14:36 UTCGHSA enrichment
  6. 2026-09-19 10:18 UTCGHSA enrichment
  7. 2026-09-19 06:02 UTCGHSA enrichment
  8. 2026-09-19 01:46 UTCGHSA enrichment
  9. 2026-09-18 21:30 UTCEG score recompute
  10. 2026-09-18 21:30 UTCGHSA enrichment
  11. 2026-09-18 19:28 UTCEPSS rescore
  12. 2026-09-18 17:14 UTCGHSA enrichment
  13. 2026-09-18 12:58 UTCGHSA enrichment
  14. 2026-09-18 08:42 UTCGHSA enrichment
  15. 2026-09-18 04:26 UTCGHSA enrichment
  16. 2026-09-18 00:10 UTCGHSA enrichment
  17. 2026-09-17 19:54 UTCEG score recompute
  18. 2026-09-17 19:54 UTCGHSA enrichment
  19. 2026-09-17 19:32 UTCEPSS rescore
  20. 2026-09-17 15:36 UTCGHSA enrichment
  21. 2026-09-17 11:20 UTCGHSA enrichment
  22. 2026-09-17 07:03 UTCGHSA enrichment
  23. 2026-09-17 02:46 UTCGHSA enrichment
  24. 2026-09-16 22:26 UTCGHSA enrichment
  25. 2026-09-16 18:08 UTCEG score recompute
Show 43 more
  1. 2026-09-16 18:08 UTCGHSA enrichment
  2. 2026-09-16 14:09 UTCEPSS rescore
  3. 2026-09-16 13:52 UTCGHSA enrichment
  4. 2026-09-16 09:14 UTCEG score recompute
  5. 2026-09-16 09:14 UTCGHSA enrichment
  6. 2026-09-16 05:15 UTCEPSS rescore
  7. 2026-09-16 04:57 UTCGHSA enrichment
  8. 2026-09-16 00:40 UTCGHSA enrichment
  9. 2026-09-15 20:17 UTCGHSA enrichment
  10. 2026-09-15 16:01 UTCGHSA enrichment
  11. 2026-09-15 11:43 UTCGHSA enrichment
  12. 2026-09-15 07:27 UTCEG score recompute
  13. 2026-09-15 07:27 UTCGHSA enrichment
  14. 2026-09-15 03:12 UTCEPSS rescore
  15. 2026-09-15 03:10 UTCGHSA enrichment
  16. 2026-09-14 22:54 UTCGHSA enrichment
  17. 2026-09-14 18:38 UTCGHSA enrichment
  18. 2026-09-14 14:17 UTCGHSA enrichment
  19. 2026-09-14 10:00 UTCGHSA enrichment
  20. 2026-09-14 05:44 UTCGHSA enrichment
  21. 2026-09-14 01:27 UTCGHSA enrichment
  22. 2026-09-13 21:11 UTCGHSA enrichment
  23. 2026-09-13 16:55 UTCEG score recompute
  24. 2026-09-13 16:55 UTCGHSA enrichment
  25. 2026-09-13 16:48 UTCEPSS rescore
  26. 2026-09-13 12:39 UTCGHSA enrichment
  27. 2026-09-13 08:22 UTCGHSA enrichment
  28. 2026-09-13 04:06 UTCGHSA enrichment
  29. 2026-09-12 23:50 UTCGHSA enrichment
  30. 2026-09-12 19:34 UTCGHSA enrichment
  31. 2026-09-12 15:18 UTCEG score recompute
  32. 2026-09-12 15:18 UTCGHSA enrichment
  33. 2026-09-12 15:02 UTCEPSS rescore
  34. 2026-09-12 11:01 UTCGHSA enrichment
  35. 2026-09-12 06:43 UTCGHSA enrichment
  36. 2026-09-12 02:26 UTCGHSA enrichment
  37. 2026-09-11 22:09 UTCGHSA enrichment
  38. 2026-09-11 17:53 UTCGHSA enrichment
  39. 2026-09-11 16:30 UTCEG score recompute
  40. 2026-09-11 16:30 UTCGHSA enrichment
  41. 2026-09-11 15:19 UTCEG score recompute
  42. 2026-09-11 14:44 UTCEG score recompute
  43. 2026-09-11 14:43 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-87988?
CVE-2026-87988 is a critical vulnerability published on September 11, 2026. An arbitrary file access vulnerability in Mistral Vibe allows an attacker to bypass workspace restrictions through commands classified as unconditionally allowed. Missing path validation for these commands enables access to files outside the active workspace without user approval.
When was CVE-2026-87988 disclosed?
CVE-2026-87988 was first published in the National Vulnerability Database on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-87988 actively exploited?
CVE-2026-87988 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 82.7% of all scored CVEs.
What is the CVSS score of CVE-2026-87988?
CVE-2026-87988 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-87988?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-87988, 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

Explore the affected products and dependency analysis for CVE-2026-87988

Explore →

Is Your Infrastructure Affected by CVE-2026-87988?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs