Medium
java-json-tools json-patch JsonMergePatchDeserializer.java JsonMergePatch.fromJson stack-based overflow
Type: advisorySources: OSV
A flaw has been found in java-json-tools json-patch up to 1.13. Affected is the function JsonMergePatch.fromJson of the file JsonMergePatchDeserializer.java. Executing a manipulation can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-86318
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 08:02 UTC · Revision 1
Source evidence
java-json-tools json-patch JsonMergePatchDeserializer.java JsonMergePatch.fromJson stack-based overflow
core-osv · Original sourcePublished 7 Sept 2026, 14:30 UTC
A flaw has been found in java-json-tools json-patch up to 1.13. Affected is the function JsonMergePatch.fromJson of the file JsonMergePatchDeserializer.java. Executing a manipulation can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
osv:CVE-2026-86318
Complete source record
{
"id": "4c2096cdfe5bae083f23a5479d5794b1a2d5fab482a0a11ef5b04000aeb07864",
"url": "https://osv.dev/vulnerability/CVE-2026-86318",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "java-json-tools json-patch JsonMergePatchDeserializer.java JsonMergePatch.fromJson stack-based overflow",
"summary": "A flaw has been found in java-json-tools json-patch up to 1.13. Affected is the function JsonMergePatch.fromJson of the file JsonMergePatchDeserializer.java. Executing a manipulation can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.",
"evidence": "osv:CVE-2026-86318",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-86318",
"aliases": [
"CVE-2026-86318"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/java-json-tools/json-patch",
"type": "GIT",
"events": [
{
"introduced": "5922bdcee44d9e58335cdbdbcc35b3bcfe43d38a"
},
{
"last_affected": "7c391b5d3c6b1649178c7278c1096b65e974e4ae"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "1.2"
},
{
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],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
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{
"range": [
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"source": "AFFECTED_FIELD",
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{
"range": [
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"introduced": "1.4"
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],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
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{
"range": [
{
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{
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"source": "AFFECTED_FIELD",
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"range": [
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"range": [
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"source": "AFFECTED_FIELD",
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{
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"source": "AFFECTED_FIELD",
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{
"range": [
{
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{
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"source": "AFFECTED_FIELD",
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"range": [
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{
"range": [
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"source": "AFFECTED_FIELD",
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{
"range": [
{
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{
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"source": "AFFECTED_FIELD",
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{
"range": [
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{
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"source": "DESCRIPTION"
}
]
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}
],
"versions": [
"1.11",
"1.12",
"1.13",
"1.2",
"1.3",
"1.4",
"1.5",
"1.6",
"1.7",
"1.8",
"1.9",
"v1.13",
"v1.11"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86318.json"
}
}
],
"modified": "2026-10-28T02:30:33.597283993Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86318.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-86318",
"https://vuldb.com/cve/CVE-2026-86318",
"https://vuldb.com/submit/908319",
"https://vuldb.com/vuln/399509",
"https://vuldb.com/vuln/399509/cti",
"https://github.com/java-json-tools/json-patch/",
"https://github.com/java-json-tools/json-patch/issues/168"
],
"provider_metadata": {
"cwe_ids": [
"CWE-119",
"CWE-121"
],
"cna_assigner": "VulDB",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"introduced": "1.0"
},
{
"last_affected": "1.0"
},
{
"introduced": "1.1"
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{
"last_affected": "1.1"
},
{
"introduced": "1.10"
},
{
"last_affected": "1.10"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86318.json"
}
},
"related_cves": [
{
"value": "CVE-2026-86318",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 501024,
"published_at": "2026-09-07T14:30:14.737+00:00"
}