CVE-2026-86734Network attack vector

Authenticated denial of service via unbounded note

Published Sep 8, 2026 · Updated Sep 10, 2026

Improper input validation in Grokability Snipe-IT before 8.7.1 allows remote authenticated users to cause a service interrupt. The POST /account/accept/{acceptance} handler accepts an unbounded note value and passes it to synchronous CommonMark rendering without a length limit. A valid account and acceptance request are required; a large note can exhaust PHP worker CPU and deny service to other requests.

CVSS severityUnavailable
Unscored
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Grokability Snipe-IT before 8.7.1 allows remote authenticated users to cause a service interrupt. The POST /account/accept/{acceptance} handler accepts an unbounded note value and passes it to synchronous CommonMark rendering without a length limit. A valid account and acceptance request are required; a large note can exhaust PHP worker CPU and deny service to other requests.

The record

CVE
CVE-2026-86734
Published
Sep 8, 2026
Updated
Sep 10, 2026
Vendor
Grokability, Inc.
Product
Snipe-IT
Classifications
T1499.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 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.

  1. Affected versionversion=0 <8.7.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Grokability, Inc. · Snipe-ITversion=0 <8.7.1

Published CVSS scores

No CVSS assessment is available in this record.

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.003Application Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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