Vulnerability · Published Sep 8, 2026 · Assigned by VulnCheck

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

Medium 6.5

In plain English

A medium-severity uncontrolled resource consumption in snipe-it from grokability. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.5%top 53.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
grokability	snipe-it	0 – before 8.7.1

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

GitHub Security Advisory (GHSA-4vcv-fc5x-jjwv) vendor-advisory
Patch Commit patch
VulnCheck Advisory: Snipe-IT before 8.7.1 Denial of Service via Unbounded Note Field third-party-advisory