CVE-2026-86770

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-09. 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 weekElevated
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: 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 validate username case sensitivity during SAML authentication, allowing attackers to authenticate as different users by registering IdP accounts with accent or case variants of victim usernames. Attackers can exploit the default utf8mb4_unicode_ci database collation to bypass username matching and achieve account takeover through federated login paths including SAML, LDAP, and OAuth.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
52(Track*)
EG Risk 52/100SSVC: 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%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

September 9, 2026

Last Modified

September 16, 2026

Advisory Details (2)

Auto-updated Sep 9, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Snipe-IT before 8.7.0 Authentication Bypass via SAML Username Collation | Advisories | VulnCheck

https://www.vulncheck.com/advisories/snipe-it-before-8.7.0-authentication-bypass-via-saml-username-collation
github Patch Available🟡 PoC Available

SAML Account Takeover via Username Collation Bypass · Advisory · grokability/snipe-it · GitHub

https://github.com/grokability/snipe-it/security/advisories/GHSA-w3vv-5wxh-xg4h

Vendor Advisories for CVE-2026-86770(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 / 44× 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 06:50 UTCEG score recompute
  2. 2026-09-19 06:50 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 19:17 UTCGHSA enrichment
  5. 2026-09-18 07:46 UTCGHSA enrichment
  6. 2026-09-17 20:14 UTCEG score recompute
  7. 2026-09-17 20:14 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-17 08:40 UTCGHSA enrichment
  10. 2026-09-16 21:08 UTCEG score recompute
  11. 2026-09-16 21:08 UTCGHSA enrichment
  12. 2026-09-16 14:09 UTCEPSS rescore
  13. 2026-09-16 12:37 UTCEG score recompute
  14. 2026-09-16 12:37 UTCGHSA enrichment
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-16 01:06 UTCGHSA enrichment
  17. 2026-09-15 13:35 UTCEG score recompute
  18. 2026-09-15 13:35 UTCGHSA enrichment
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-15 02:03 UTCGHSA enrichment
  22. 2026-09-14 14:31 UTCEG score recompute
  23. 2026-09-14 14:31 UTCGHSA enrichment
  24. 2026-09-14 13:40 UTCEG score recompute
  25. 2026-09-14 13:40 UTCGHSA enrichment
Show 19 more
  1. 2026-09-14 04:24 UTCGHSA enrichment
  2. 2026-09-13 16:53 UTCEG score recompute
  3. 2026-09-13 16:53 UTCGHSA enrichment
  4. 2026-09-13 05:21 UTCGHSA enrichment
  5. 2026-09-12 17:50 UTCEG score recompute
  6. 2026-09-12 17:50 UTCGHSA enrichment
  7. 2026-09-12 06:18 UTCGHSA enrichment
  8. 2026-09-11 18:46 UTCEG score recompute
  9. 2026-09-11 18:46 UTCGHSA enrichment
  10. 2026-09-11 14:53 UTCEPSS rescore
  11. 2026-09-11 14:53 UTCEPSS rescore
  12. 2026-09-11 07:15 UTCGHSA enrichment
  13. 2026-09-10 19:44 UTCGHSA enrichment
  14. 2026-09-10 08:11 UTCGHSA enrichment
  15. 2026-09-09 20:40 UTCEG score recompute
  16. 2026-09-09 20:39 UTCGHSA enrichment
  17. 2026-09-09 14:26 UTCEG score recompute
  18. 2026-09-09 13:45 UTCEG score recompute
  19. 2026-09-09 13:44 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-86770?
CVE-2026-86770 is a high vulnerability published on September 9, 2026. Snipe-IT before 8.7.0 fails to validate username case sensitivity during SAML authentication, allowing attackers to authenticate as different users by registering IdP accounts with accent or case variants of victim usernames. Attackers can exploit the default utf8mb4unicodeci database collation to…
When was CVE-2026-86770 disclosed?
CVE-2026-86770 was first published in the National Vulnerability Database on September 9, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86770 actively exploited?
CVE-2026-86770 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 74.8% of all scored CVEs.
What is the CVSS score of CVE-2026-86770?
CVE-2026-86770 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-86770?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86770, 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-2026-86770

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