Medium severity · published Sep 8, 2026
CVE-2026-86734
Snipe-IT before 8.7.1 Denial of Service via Unbounded Note Field
6.5
CVSS
0.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SN
snipe-it · grokability
before 8.7.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-86734
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-86734
Patch
https://github.com/grokability/snipe-it/commit/66770cfe20cb135e2b7022c7a83d01e6783c914a
Mitigation
https://github.com/grokability/snipe-it/security/advisories/GHSA-4vcv-fc5x-jjwv
Patch
https://www.vulncheck.com/advisories/snipe-it-before-8.7.1-denial-of-service-via-unbounded-note-field
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