CVE-2026-76267 (GCVE-0-2026-76267)
Vulnerability from cvelistv5
Published
2026-10-07 20:46
Modified
2026-10-08 15:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-117 - The software does not neutralize or incorrectly neutralizes output that is written to logs.
Summary
In Splunk Enterprise versions below 10.4.3, 10.2.7, and 10.0.10, a user that holds a role with the read_o11y_content capability could inject forged entries into the app log through the Representational State Transfer (REST) API. The vulnerability is possible because Splunk App for Splunk O11y Cloud does not neutralize user-supplied SignalFlow content before writing it to the app log.
Splunk Enterprise versions 9.4.x are not affected.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Splunk | Splunk Enterprise |
Version: 10.4 < 10.4.3 Version: 10.2 < 10.2.7 Version: 10.0 < 10.0.10 |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-76267",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-08T15:09:34.802519Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-08T15:09:43.445Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"modules": [
"REST API"
],
"product": "Splunk Enterprise",
"vendor": "Splunk",
"versions": [
{
"lessThan": "10.4.3",
"status": "affected",
"version": "10.4",
"versionType": "custom"
},
{
"lessThan": "10.2.7",
"status": "affected",
"version": "10.2",
"versionType": "custom"
},
{
"lessThan": "10.0.10",
"status": "affected",
"version": "10.0",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Gabriel Nitu, Splunk"
}
],
"datePublic": "2026-10-07T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/markdown",
"value": "In Splunk Enterprise versions below 10.4.3, 10.2.7, and 10.0.10, a user that holds a role with the `read_o11y_content` capability could inject forged entries into the app log through the Representational State Transfer (REST) API. The vulnerability is possible because Splunk App for Splunk O11y Cloud does not neutralize user-supplied SignalFlow content before writing it to the app log.\n\nSplunk Enterprise versions 9.4.x are not affected."
}
],
"value": "In Splunk Enterprise versions below 10.4.3, 10.2.7, and 10.0.10, a user that holds a role with the read_o11y_content capability could inject forged entries into the app log through the Representational State Transfer (REST) API. The vulnerability is possible because Splunk App for Splunk O11y Cloud does not neutralize user-supplied SignalFlow content before writing it to the app log.\n\nSplunk Enterprise versions 9.4.x are not affected."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-117",
"description": "The software does not neutralize or incorrectly neutralizes output that is written to logs.",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-07T20:46:30.339Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"url": "https://advisory.splunk.com/advisories/SVD-2026-1001"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade Splunk Enterprise to versions 10.4.3, 10.2.7, 10.0.10, and 9.4.15, or higher."
}
],
"source": {
"advisory": "SVD-2026-1001",
"discovery": "INTERNAL"
},
"title": "Log Injection through the REST API in Splunk App for Splunk O11y Cloud",
"workarounds": [
{
"lang": "en",
"value": "Turn off or remove the Splunk App for Splunk O11y Cloud. For more information see [Manage app and add-on objects](https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.2/meet-splunk-apps/manage-app-and-add-on-objects) in the Splunk documentation."
}
]
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-76267",
"datePublished": "2026-10-07T20:46:30.339Z",
"dateReserved": "2026-08-19T12:02:03.620Z",
"dateUpdated": "2026-10-08T15:09:43.445Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-76267\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-08T15:09:34.802519Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-08T15:09:39.891Z\"}}], \"cna\": {\"title\": \"Log Injection through the REST API in Splunk App for Splunk O11y Cloud\", \"source\": {\"advisory\": \"SVD-2026-1001\", \"discovery\": \"INTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Gabriel Nitu, Splunk\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 4.3, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Splunk\", \"modules\": [\"REST API\"], \"product\": \"Splunk Enterprise\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.4\", \"lessThan\": \"10.4.3\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"10.2\", \"lessThan\": \"10.2.7\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"10.0\", \"lessThan\": \"10.0.10\", \"versionType\": \"custom\"}]}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Upgrade Splunk Enterprise to versions 10.4.3, 10.2.7, 10.0.10, and 9.4.15, or higher.\"}], \"datePublic\": \"2026-10-07T00:00:00.000Z\", \"references\": [{\"url\": \"https://advisory.splunk.com/advisories/SVD-2026-1001\"}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Turn off or remove the Splunk App for Splunk O11y Cloud. For more information see [Manage app and add-on objects](https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.2/meet-splunk-apps/manage-app-and-add-on-objects) in the Splunk documentation.\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"In Splunk Enterprise versions below 10.4.3, 10.2.7, and 10.0.10, a user that holds a role with the read_o11y_content capability could inject forged entries into the app log through the Representational State Transfer (REST) API. The vulnerability is possible because Splunk App for Splunk O11y Cloud does not neutralize user-supplied SignalFlow content before writing it to the app log.\\n\\nSplunk Enterprise versions 9.4.x are not affected.\", \"supportingMedia\": [{\"type\": \"text/markdown\", \"value\": \"In Splunk Enterprise versions below 10.4.3, 10.2.7, and 10.0.10, a user that holds a role with the `read_o11y_content` capability could inject forged entries into the app log through the Representational State Transfer (REST) API. The vulnerability is possible because Splunk App for Splunk O11y Cloud does not neutralize user-supplied SignalFlow content before writing it to the app log.\\n\\nSplunk Enterprise versions 9.4.x are not affected.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-117\", \"description\": \"The software does not neutralize or incorrectly neutralizes output that is written to logs.\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2026-10-07T20:46:30.339Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-76267\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-08T15:09:43.445Z\", \"dateReserved\": \"2026-08-19T12:02:03.620Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2026-10-07T20:46:30.339Z\", \"assignerShortName\": \"cisco\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…