← Vulnerability feed

Vulnerability record · CVE-2026-86734 · published 8 September 2026

CVE-2026-86734: Snipeitapp snipe-it uncontrolled resource consumption vulnerability

Snipeitapp · Snipe It

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.

7.1 CVSS 4.0 High EPSS 0.55% · top 56.4% CWE-400 · Uncontrolled resource consumption
7.1CVSS 4.0 base score
0.55%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
10 Sep 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

Track CVE-2026-86734 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.9CVE-2025-63601Snipeitapp snipe-it unrestricted file upload vulnerabilitySnipe-IT before version 8.3.3 contains a remote code execution vulnerability that allows an authenticated attacker to upload a malicious backup file …EPSS 0.60%9.8CVE-2026-37709Snipeitapp snipe-it improper access control vulnerabilityInsecure Permissions vulnerability in grokability snipe-it v.8.4.0 and before and fixed after 2026-03-10 commit 676a9958 allows a remote attacker to …EPSS 0.79%9.3CVE-2026-86738Snipeitapp snipe-it cross-site scripting vulnerabilitySnipe-IT versions before 8.7.0 contain a CSS injection vulnerability in the Custom CSS field due to incomplete sanitization that reverses HTML encodi…EPSS 0.49%8.8CVE-2023-5511Snipeitapp snipe-it cross-site request forgery vulnerabilityCross-Site Request Forgery (CSRF) in GitHub repository snipe/snipe-it prior to v.6.2.3.EPSS 0.27%8.8CVE-2022-23064Snipeitapp snipe-it injection vulnerabilityIn Snipe-IT, versions v3.0-alpha to v5.3.7 are vulnerable to Host Header Injection. By sending a specially crafted host header in the reset password …EPSS 1.3%8.8CVE-2022-0611Snipeitapp snipe-it missing authorization vulnerabilityMissing Authorization in Packagist snipe/snipe-it prior to 5.3.11.EPSS 1.2%8.8CVE-2021-4130Snipeitapp snipe-it cross-site request forgery vulnerabilitysnipe-it is vulnerable to Cross-Site Request Forgery (CSRF)EPSS 0.46%8.8CVE-2021-3858Snipeitapp snipe-it cross-site request forgery vulnerabilitysnipe-it is vulnerable to Cross-Site Request Forgery (CSRF)EPSS 0.54%

Source: NIST National Vulnerability Database (record CVE-2026-86734), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.