CVE-2026-86751

CRITICALNVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.6 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 82% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 4 sources updated this weekElevated
9.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.6Exploit: Elevated riskExposed: 0

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

Snipe-IT before 8.7.0 fails to properly sanitize markdown image syntax in note fields, allowing authenticated users to read arbitrary server files and issue server-side HTTP requests. Attackers can submit markdown image syntax in checkout acceptance notes that survive HTML escaping, are expanded by CommonMark parser, and resolved by laravel-mail-auto-embed via file_get_contents or curl, exfiltrating sensitive files like .env containing APP_KEY.

CVSS v3
9.6
EG Score
9.6(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity96% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
18%
KEV
Not listed

Published

September 9, 2026

Last Modified

September 14, 2026

Advisory Details (2)

Auto-updated Sep 14, 2026
Patch available. Sources: github.
github Patch Available

Arbitrary File Read and SSRF via Markdown Image Injection in Outbound Mail · Advisory · grokability/snipe-it · GitHub

https://github.com/grokability/snipe-it/security/advisories/GHSA-f3vq-g24v-xc2g
generic

Snipe-IT before 8.7.0 Arbitrary File Read and SSRF via Markdown | Advisories | VulnCheck

https://www.vulncheck.com/advisories/snipe-it-before-8.7.0-arbitrary-file-read-and-ssrf-via-markdown

Vendor Advisories for CVE-2026-86751(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 48× 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 20:47 UTCGHSA enrichment
  2. 2026-09-19 16:23 UTCEG score recompute
  3. 2026-09-19 16:23 UTCGHSA enrichment
  4. 2026-09-19 11:58 UTCGHSA enrichment
  5. 2026-09-19 07:34 UTCGHSA enrichment
  6. 2026-09-19 03:09 UTCGHSA enrichment
  7. 2026-09-18 22:45 UTCEG score recompute
  8. 2026-09-18 22:45 UTCGHSA enrichment
  9. 2026-09-18 19:28 UTCEPSS rescore
  10. 2026-09-18 18:21 UTCGHSA enrichment
  11. 2026-09-18 13:57 UTCGHSA enrichment
  12. 2026-09-18 09:27 UTCGHSA enrichment
  13. 2026-09-18 05:03 UTCGHSA enrichment
  14. 2026-09-18 00:39 UTCGHSA enrichment
  15. 2026-09-17 20:14 UTCEG score recompute
  16. 2026-09-17 20:14 UTCGHSA enrichment
  17. 2026-09-17 19:32 UTCEPSS rescore
  18. 2026-09-17 11:57 UTCGHSA enrichment
  19. 2026-09-17 07:32 UTCGHSA enrichment
  20. 2026-09-17 03:06 UTCGHSA enrichment
  21. 2026-09-16 22:42 UTCGHSA enrichment
  22. 2026-09-16 18:17 UTCEG score recompute
  23. 2026-09-16 18:17 UTCGHSA enrichment
  24. 2026-09-16 14:09 UTCEPSS rescore
  25. 2026-09-16 13:53 UTCGHSA enrichment
Show 38 more
  1. 2026-09-16 08:54 UTCEG score recompute
  2. 2026-09-16 08:54 UTCGHSA enrichment
  3. 2026-09-16 05:15 UTCEPSS rescore
  4. 2026-09-16 03:43 UTCGHSA enrichment
  5. 2026-09-15 23:18 UTCGHSA enrichment
  6. 2026-09-15 18:41 UTCGHSA enrichment
  7. 2026-09-15 14:17 UTCGHSA enrichment
  8. 2026-09-15 09:53 UTCGHSA enrichment
  9. 2026-09-15 05:29 UTCEG score recompute
  10. 2026-09-15 05:28 UTCGHSA enrichment
  11. 2026-09-15 05:25 UTCGHSA enrichment
  12. 2026-09-15 03:12 UTCEPSS rescore
  13. 2026-09-15 03:12 UTCEPSS rescore
  14. 2026-09-15 00:59 UTCGHSA enrichment
  15. 2026-09-14 20:35 UTCEG score recompute▲ 1.10
  16. 2026-09-14 20:35 UTCGHSA enrichment
  17. 2026-09-14 20:34 UTCNVD updateCVSS v3 → 9.6 · severity → CRITICAL
  18. 2026-09-14 16:57 UTCGHSA enrichment
  19. 2026-09-14 04:04 UTCEG score recompute
  20. 2026-09-14 04:04 UTCGHSA enrichment
  21. 2026-09-13 15:11 UTCGHSA enrichment
  22. 2026-09-13 02:17 UTCEG score recompute
  23. 2026-09-13 02:17 UTCGHSA enrichment
  24. 2026-09-12 13:24 UTCGHSA enrichment
  25. 2026-09-12 00:31 UTCEG score recompute
  26. 2026-09-12 00:31 UTCGHSA enrichment
  27. 2026-09-11 14:53 UTCEPSS rescore
  28. 2026-09-11 14:53 UTCEPSS rescore
  29. 2026-09-11 11:37 UTCEG score recompute
  30. 2026-09-11 11:37 UTCGHSA enrichment
  31. 2026-09-10 22:28 UTCGHSA enrichment
  32. 2026-09-10 09:34 UTCGHSA enrichment
  33. 2026-09-09 20:41 UTCEG score recompute
  34. 2026-09-09 20:40 UTCGHSA enrichment
  35. 2026-09-09 15:29 UTCEG score recompute
  36. 2026-09-09 14:27 UTCEG score recompute
  37. 2026-09-09 13:45 UTCEG score recompute
  38. 2026-09-09 13:44 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-86751?
CVE-2026-86751 is a critical vulnerability published on September 9, 2026. Snipe-IT before 8.7.0 fails to properly sanitize markdown image syntax in note fields, allowing authenticated users to read arbitrary server files and issue server-side HTTP requests. Attackers can submit markdown image syntax in checkout acceptance notes that survive HTML escaping, are expanded by…
When was CVE-2026-86751 disclosed?
CVE-2026-86751 was first published in the National Vulnerability Database on September 9, 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-2026-86751 actively exploited?
CVE-2026-86751 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 82.4% of all scored CVEs.
What is the CVSS score of CVE-2026-86751?
CVE-2026-86751 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2026-86751?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86751, 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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