Account takeover via collation-folded federated usernames
Published Sep 9, 2026 · Updated Sep 9, 2026
Authentication bypass in Grokability Snipe-IT 8.6.3 allows remote authenticated users to take over accounts through federated login. Saml::samlLogin queries users.username with an attacker-controlled SAML identifier under the accent- and case-insensitive utf8mb4_unicode_ci collation, then trusts the returned row without a byte-exact comparison. A valid IdP identity and an accent or case variant of a victim username are required; the resulting session inherits that victim's data access and state-changing privileges.
Summary
What happened
Authentication bypass in Grokability Snipe-IT 8.6.3 allows remote authenticated users to take over accounts through federated login. Saml::samlLogin queries users.username with an attacker-controlled SAML identifier under the accent- and case-insensitive utf8mb4_unicode_ci collation, then trusts the returned row without a byte-exact comparison. A valid IdP identity and an accent or case variant of a victim username are required; the resulting session inherits that victim's data access and state-changing privileges.
The record
- CVE
- CVE-2026-86770
- Published
- Sep 9, 2026
- Updated
- Sep 9, 2026
- Vendor
- Grokability, Inc.
- Product
- Snipe-IT
- Classifications
- CWE-706, CWE-178, CWE-287, T1078
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 9, 2026CVE publishedPublication date reported by the CVE source.
- Sep 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=8.6.3 <8.7.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- SAML username collation bypass proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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