CVE-2026-4881 (GCVE-0-2026-4881)
Vulnerability from cvelistv5
Published
2026-06-04 08:49
Modified
2026-06-04 13:05
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Insufficient permission checks on an API endpoint
Summary
In affected versions of Octopus Server, permissions were not checked correctly resulting in any authenticated user being able to make server level changes using a certain API endpoint despite receiving an error.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Octopus Deploy | Octopus Server |
Version: 2023.0.0 < 2025.4.10523 Version: 2025.4.0 < 2025.4.10545 Version: 2026.1.0 < 2026.1.11313 |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-4881",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-04T12:46:15.631557Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"description": "CWE-862 Missing Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-04T13:05:54.396Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"platforms": [
"Windows",
"Linux"
],
"product": "Octopus Server",
"vendor": "Octopus Deploy",
"versions": [
{
"lessThan": "2025.4.10523",
"status": "affected",
"version": "2023.0.0",
"versionType": "custom"
},
{
"lessThan": "2025.4.10545",
"status": "affected",
"version": "2025.4.0",
"versionType": "custom"
},
{
"lessThan": "2026.1.11313",
"status": "affected",
"version": "2026.1.0",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "This vulnerability was found by MononcleMich"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "In affected versions of Octopus Server, permissions were not checked correctly resulting in any authenticated user being able to make server level changes using a certain API endpoint despite receiving an error."
}
],
"value": "In affected versions of Octopus Server, permissions were not checked correctly resulting in any authenticated user being able to make server level changes using a certain API endpoint despite receiving an error."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 6,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "Insufficient permission checks on an API endpoint",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-04T08:49:59.083Z",
"orgId": "6f4f8c89-ef06-4bae-a2a5-6734ddf76272",
"shortName": "Octopus"
},
"references": [
{
"url": "https://advisories.octopus.com/post/2026/sa2026-04"
}
],
"source": {
"discovery": "EXTERNAL"
},
"x_generator": {
"engine": "Vulnogram 1.0.2"
}
}
},
"cveMetadata": {
"assignerOrgId": "6f4f8c89-ef06-4bae-a2a5-6734ddf76272",
"assignerShortName": "Octopus",
"cveId": "CVE-2026-4881",
"datePublished": "2026-06-04T08:49:59.083Z",
"dateReserved": "2026-03-26T07:19:05.417Z",
"dateUpdated": "2026-06-04T13:05:54.396Z",
"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-2026-4881\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-04T12:46:15.631557Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-862\", \"description\": \"CWE-862 Missing Authorization\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-04T13:05:47.492Z\"}}], \"cna\": {\"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"This vulnerability was found by MononcleMich\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 6, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N\", \"exploitMaturity\": \"NOT_DEFINED\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"PRESENT\", \"privilegesRequired\": \"LOW\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"HIGH\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Octopus Deploy\", \"product\": \"Octopus Server\", \"versions\": [{\"status\": \"affected\", \"version\": \"2023.0.0\", \"lessThan\": \"2025.4.10523\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"2025.4.0\", \"lessThan\": \"2025.4.10545\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"2026.1.0\", \"lessThan\": \"2026.1.11313\", \"versionType\": \"custom\"}], \"platforms\": [\"Windows\", \"Linux\"], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://advisories.octopus.com/post/2026/sa2026-04\"}], \"x_generator\": {\"engine\": \"Vulnogram 1.0.2\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In affected versions of Octopus Server, permissions were not checked correctly resulting in any authenticated user being able to make server level changes using a certain API endpoint despite receiving an error.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"In affected versions of Octopus Server, permissions were not checked correctly resulting in any authenticated user being able to make server level changes using a certain API endpoint despite receiving an error.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"description\": \"Insufficient permission checks on an API endpoint\"}]}], \"providerMetadata\": {\"orgId\": \"6f4f8c89-ef06-4bae-a2a5-6734ddf76272\", \"shortName\": \"Octopus\", \"dateUpdated\": \"2026-06-04T08:49:59.083Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-4881\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-04T13:05:54.396Z\", \"dateReserved\": \"2026-03-26T07:19:05.417Z\", \"assignerOrgId\": \"6f4f8c89-ef06-4bae-a2a5-6734ddf76272\", \"datePublished\": \"2026-06-04T08:49:59.083Z\", \"assignerShortName\": \"Octopus\"}",
"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…