CVE-2026-86738

HIGHPre-NVD 8.78.7—
EchelonGraph scoreHIGH confidence

Score 8.7 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-08. a secondary CVSS source baseline 8.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.7Exploit: None knownExposed: 0

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

Snipe-IT versions before 8.7.0 contain a CSS injection vulnerability in the Custom CSS field due to incomplete sanitization that reverses HTML encoding on greater-than and double-quote characters. Superusers can plant malicious CSS payloads using @import and url() references to exfiltrate CSRF tokens from other superusers via attribute-selector rules, enabling account takeover.

CVSS v3
8.7
EG Score
8.7(high)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity87% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
39%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 9, 2026

Advisory Details (3)

Auto-updated Sep 8, 2026
Patch available. Sources: github, github_commit.
generic

Snipe-IT before 8.7.0 CSS Injection via Custom CSS | Advisories | VulnCheck

https://www.vulncheck.com/advisories/snipe-it-before-8.7.0-css-injection-via-custom-css
github_commit Patch Available

commit d26d71688359 (grokability/snipe-it)

Patch available: grokability/snipe-it v8.7.0 (contains commit d26d71688359)

https://github.com/grokability/snipe-it/commit/d26d71688359707f3b257fc04fe6c3e5a17405f9
github Patch Available

Cross-superuser CSRF-token exfiltration via custom CSS `@import` and external `url()` · Advisory · grokability/snipe-it · GitHub

https://github.com/grokability/snipe-it/security/advisories/GHSA-pvcw-mp8q-mj39

Vendor Advisories for CVE-2026-86738(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 28× in last 7d / 70× 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. 2026-09-25 05:23 UTCGHSA enrichment
  2. 2026-09-24 18:20 UTCEG score recompute
  3. 2026-09-24 18:20 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 07:15 UTCGHSA enrichment
  6. 2026-09-23 20:13 UTCEG score recompute
  7. 2026-09-23 20:13 UTCGHSA enrichment
  8. 2026-09-23 17:54 UTCEPSS rescore
  9. 2026-09-23 09:10 UTCGHSA enrichment
  10. 2026-09-22 22:07 UTCEG score recompute
  11. 2026-09-22 22:07 UTCGHSA enrichment
  12. 2026-09-22 16:01 UTCEPSS rescore
  13. 2026-09-22 11:04 UTCGHSA enrichment
  14. 2026-09-22 00:01 UTCEG score recompute
  15. 2026-09-22 00:01 UTCGHSA enrichment
  16. 2026-09-21 21:09 UTCEPSS rescore
  17. 2026-09-21 12:58 UTCGHSA enrichment
  18. 2026-09-21 01:55 UTCEG score recompute
  19. 2026-09-21 01:55 UTCGHSA enrichment
  20. 2026-09-20 20:16 UTCEPSS rescore
  21. 2026-09-20 14:52 UTCGHSA enrichment
  22. 2026-09-20 03:49 UTCGHSA enrichment
  23. 2026-09-19 16:45 UTCEG score recompute
  24. 2026-09-19 16:45 UTCGHSA enrichment
  25. 2026-09-19 05:42 UTCEG score recompute
Show 45 more
  1. 2026-09-19 05:42 UTCGHSA enrichment
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 18:39 UTCGHSA enrichment
  4. 2026-09-18 07:36 UTCGHSA enrichment
  5. 2026-09-17 20:33 UTCEG score recompute
  6. 2026-09-17 20:33 UTCGHSA enrichment
  7. 2026-09-17 19:32 UTCEPSS rescore
  8. 2026-09-17 09:30 UTCGHSA enrichment
  9. 2026-09-16 22:27 UTCEG score recompute
  10. 2026-09-16 22:27 UTCGHSA enrichment
  11. 2026-09-16 14:09 UTCEPSS rescore
  12. 2026-09-16 11:04 UTCEG score recompute
  13. 2026-09-16 11:04 UTCGHSA enrichment
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-16 00:01 UTCGHSA enrichment
  16. 2026-09-15 12:58 UTCEG score recompute
  17. 2026-09-15 12:58 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 01:54 UTCGHSA enrichment
  21. 2026-09-14 14:51 UTCGHSA enrichment
  22. 2026-09-14 03:48 UTCEG score recompute
  23. 2026-09-14 03:48 UTCGHSA enrichment
  24. 2026-09-13 16:45 UTCGHSA enrichment
  25. 2026-09-13 05:42 UTCGHSA enrichment
  26. 2026-09-12 18:39 UTCEG score recompute
  27. 2026-09-12 18:39 UTCGHSA enrichment
  28. 2026-09-12 07:35 UTCGHSA enrichment
  29. 2026-09-11 20:30 UTCEG score recompute
  30. 2026-09-11 20:30 UTCGHSA enrichment
  31. 2026-09-11 14:53 UTCEPSS rescore
  32. 2026-09-11 14:53 UTCEPSS rescore
  33. 2026-09-11 09:27 UTCGHSA enrichment
  34. 2026-09-10 22:24 UTCGHSA enrichment
  35. 2026-09-10 11:21 UTCEG score recompute
  36. 2026-09-10 11:21 UTCGHSA enrichment
  37. 2026-09-10 00:14 UTCGHSA enrichment
  38. 2026-09-09 13:11 UTCGHSA enrichment
  39. 2026-09-09 07:14 UTCGHSA enrichment
  40. 2026-09-08 20:11 UTCEG score recompute
  41. 2026-09-08 20:11 UTCGHSA enrichment
  42. 2026-09-08 16:41 UTCEG score recompute
  43. 2026-09-08 15:40 UTCEG score recompute
  44. 2026-09-08 15:25 UTCEG score recompute
  45. 2026-09-08 15:24 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-86738?
CVE-2026-86738 is a high vulnerability published on September 8, 2026. Snipe-IT versions before 8.7.0 contain a CSS injection vulnerability in the Custom CSS field due to incomplete sanitization that reverses HTML encoding on greater-than and double-quote characters. Superusers can plant malicious CSS payloads using @import and url() references to exfiltrate CSRF…
When was CVE-2026-86738 disclosed?
CVE-2026-86738 was first published in the National Vulnerability Database on September 8, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86738 actively exploited?
CVE-2026-86738 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 60.7% of all scored CVEs.
What is the CVSS score of CVE-2026-86738?
CVE-2026-86738 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-86738?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86738, 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-2026-86738

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