Technology · Starcounter-Jack
Starcounter-Jack JSON-Patch vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 3 vulnerabilities in Starcounter-Jack JSON-Patch: 0 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-86319, was published on 7 September 2026. Nothing was published in the last eight weeks.
- Last 7 days
- 0
- Last 90 days
- 2
- Critical, all time
- 0
- Exploited in the wild
- 0
About Starcounter-Jack JSON-Patch
JavaScript implementation of RFC 6902 JSON Patch format operations.
Latest Starcounter-Jack JSON-Patch vulnerabilities
- CVE-2026-86319: java-json-tools json-patch denial of service in JsonPatch.apply()mediumCVSS 5.3EPSS 0.7%
- CVE-2026-86318: java-json-tools json-patch stack overflow in merge patch deserializationmediumCVSS 5.3EPSS 0.8%
- CVE-2021-4279: Starcounter-Jack JSON-Patch prototype pollutionlowCVSS 3.1EPSS 1.1%
Most severe Starcounter-Jack JSON-Patch vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-86318: java-json-tools json-patch stack overflow in merge patch deserializationmediumCVSS 5.3EPSS 0.8%
- CVE-2026-86319: java-json-tools json-patch denial of service in JsonPatch.apply()mediumCVSS 5.3EPSS 0.7%
- CVE-2021-4279: Starcounter-Jack JSON-Patch prototype pollutionlowCVSS 3.1EPSS 1.1%
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 2 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Starcounter-Jack JSON-Patch vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/json-patch)<a href="https://junglewise.ai/threats/technologies/json-patch"><img src="https://junglewise.ai/threats/technologies/json-patch/badge.svg" alt="Starcounter-Jack JSON-Patch vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/json-patch.json, and this page as text at https://junglewise.ai/threats/technologies/json-patch.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Starcounter-Jack JSON-Patch vulnerabilities", https://junglewise.ai/threats/technologies/json-patch, 9 November 2026.