CVE-2026-86734 json
Snipe-IT before 8.7.1 Denial of Service via Unbounded Note Field
published 2mo ago modified 2mo ago also EUVD-2026-72870 , GHSA-4vcv-fc5x-jjwv
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository grokability/snipe-it. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 46%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- grokability snipe-it 8.7.1
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2mo ago
Exploit prediction
0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.1 | 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 |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| CNA | 4.0 | 7.1 | 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:X/V:X/RE:X/U:X |
Affected products
- grokability snipe-it
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
References
-
github.com
/grokability/snipe-it/commit/66770cfe20cb135e2b7022c7a83d01e6783c914a
patch
-
github.com
/grokability/snipe-it/security/advisories/GHSA-4vcv-fc5x-jjwv
vendor-advisory, mitigation, patch, advisory
-
vulncheck.com
/advisories/snipe-it-before-8.7.1-denial-of-service-via-unbounded-note-field
third-party-advisory, patch
Sources
- CVE List CVE-2026-86734
- NVD CVE-2026-86734
- Maintainer advisory GHSA-4vcv-fc5x-jjwv
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of grokability/snipe-it published their own advisory on GitHub. Reviewed sources take precedence over it.