What’s Vulnerable › Vulnerabilities

CVE-2026-86734: Snipe-IT before 8.7.1 Denial of Service via Unbounded Note Field

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-08 · updated 2026-09-10
• Weakness: CWE-400

Description

Snipe-IT before 8.7.1 fails to validate the length of the note field in the POST /account/accept/{acceptance} endpoint, allowing authenticated users to submit unbounded input that reaches synchronous CommonMark rendering. Attackers can submit large note values to exhaust PHP worker CPU and cause denial of service through resource exhaustion in the markdown parsing pipeline.

Affected products

• grokability snipe-it: before 8.7.1 — fixed in 8.7.1

How to fix

Upgrade to a fixed version: grokability snipe-it 8.7.1. Check the vendor advisory for mitigations.

References

• https://github.com/grokability/snipe-it/commit/66770cfe20cb135e2b7022c7a83d01e6783c914a
• https://github.com/grokability/snipe-it/security/advisories/GHSA-4vcv-fc5x-jjwv
• https://www.vulncheck.com/advisories/snipe-it-before-8.7.1-denial-of-service-via-unbounded-note-field

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