Resource exhaustion in Grokability Snipe-It
CVE-2026-86734
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (45.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/grokability/snipe-it/security/advisories/GHSA-4vcv-fc5x-jjwv (vendor-advisory, Patch, Mitigation, Vendor Advisory)
- github.com/grokability/snipe-it/commit/66770cfe20cb135e2b7022c7a83d01e6783c914a (Patch, patch)
- www.vulncheck.com/advisories/snipe-it-before-8.7.1-denial-of-service-via-unboun… (Patch, Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-86734?
- CVE-2026-86734 is a medium-severity vulnerability in Grokability Snipe-It, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-09-08.
- How severe is CVE-2026-86734?
- Medium severity. CVSS v3 base score is 6.5 out of 10.