CVE-2026-8858 (GCVE-0-2026-8858)
Vulnerability from cvelistv5
Published
2026-06-22 14:16
Modified
2026-07-09 19:54
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Summary
IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere Web Server Plug-in component. This vulnerability can be exploited when an attacker impersonates the application server and sends crafted responses to the plug-in.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| IBM | WebSphere Application Server |
Version: 8.5 Version: 9.0 cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:* cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:* |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-8858",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-23T03:56:00.365269Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-23T18:48:11.431Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*",
"cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"product": "WebSphere Application Server",
"vendor": "IBM",
"versions": [
{
"status": "affected",
"version": "8.5"
},
{
"status": "affected",
"version": "9.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eIBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere Web Server Plug-in component. This vulnerability can be exploited when an attacker impersonates the application server and sends crafted responses to the plug-in.\u003c/p\u003e"
}
],
"value": "IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere Web Server Plug-in component. This vulnerability can be exploited when an attacker impersonates the application server and sends crafted responses to the plug-in."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-94",
"description": "CWE-94 Improper Control of Generation of Code (\u0027Code Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-09T19:54:33.016Z",
"orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
"shortName": "ibm"
},
"references": [
{
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://www.ibm.com/support/pages/node/7276560"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eIBM strongly recommends addressing the vulnerability now by applying a currently available Web Server Plug-ins interim fix or fix pack that contains the fix for APAR PH71376.\u003c/p\u003e\u003cdiv\u003e\u0026nbsp;\u003c/div\u003e\u003cp\u003e\u003cstrong\u003eWeb Server Plug-ins for IBM WebSphere Application Server (used with either WebSphere Application Server traditional or Liberty):\u003c/strong\u003e\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eFor V9.0.0.0 through 9.0.5.27:\u003c/strong\u003e\u003cbr\u003e\u00b7 Upgrade to minimal fix pack levels as required by the interim fix and then apply the Web Server Plug-ins Interim Fix that resolves\u0026nbsp;\u003ca href=\"https://www.ibm.com/support/pages/node/7273976\" rel=\"nofollow\"\u003ePH71376\u003c/a\u003e\u003cbr\u003e--OR--\u003cbr\u003e\u00b7 Apply Fix Pack 9.0.5.28 or later (targeted availability 2Q2026).\u0026nbsp;\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eFor V8.5.0.0 through 8.5.5.29:\u003c/strong\u003e\u003cbr\u003e\u00b7 Upgrade to minimal fix pack levels as required by interim fix and then apply Web Server Plug-ins Interim Fix that resolves\u0026nbsp;\u003ca href=\"https://www.ibm.com/support/pages/node/7273976\" rel=\"nofollow\"\u003ePH71376\u003c/a\u003e\u003cbr\u003e--OR--\u003cbr\u003e\u00b7 Apply Fix Pack 8.5.5.30 or later (targeted availability 3Q2026).\u003c/p\u003e"
}
],
"value": "IBM strongly recommends addressing the vulnerability now by applying a currently available Web Server Plug-ins interim fix or fix pack that contains the fix for APAR PH71376.\n\n\u00a0\n\n\n\nWeb Server Plug-ins for IBM WebSphere Application Server (used with either WebSphere Application Server traditional or Liberty):\n\n\n\nFor V9.0.0.0 through 9.0.5.27:\n\u00b7 Upgrade to minimal fix pack levels as required by the interim fix and then apply the Web Server Plug-ins Interim Fix that resolves\u00a0 PH71376 https://www.ibm.com/support/pages/node/7273976 \n--OR--\n\u00b7 Apply Fix Pack 9.0.5.28 or later (targeted availability 2Q2026).\u00a0\u00a0\n\n\n\nFor V8.5.0.0 through 8.5.5.29:\n\u00b7 Upgrade to minimal fix pack levels as required by interim fix and then apply Web Server Plug-ins Interim Fix that resolves\u00a0 PH71376 https://www.ibm.com/support/pages/node/7273976 \n--OR--\n\u00b7 Apply Fix Pack 8.5.5.30 or later (targeted availability 3Q2026)."
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "WebSphere Application Server Remote Code Execution",
"x_generator": {
"engine": "ibm-cvegen"
}
}
},
"cveMetadata": {
"assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
"assignerShortName": "ibm",
"cveId": "CVE-2026-8858",
"datePublished": "2026-06-22T14:16:39.629Z",
"dateReserved": "2026-05-18T18:06:05.131Z",
"dateUpdated": "2026-07-09T19:54:33.016Z",
"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-2026-8858\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-23T03:56:00.365269Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-23T18:48:08.374Z\"}}], \"cna\": {\"title\": \"WebSphere Application Server Remote Code Execution\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"ADJACENT_NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*\", \"cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*\"], \"vendor\": \"IBM\", \"product\": \"WebSphere Application Server\", \"versions\": [{\"status\": \"affected\", \"version\": \"8.5\"}, {\"status\": \"affected\", \"version\": \"9.0\"}], \"defaultStatus\": \"unaffected\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"IBM strongly recommends addressing the vulnerability now by applying a currently available Web Server Plug-ins interim fix or fix pack that contains the fix for APAR PH71376.\\n\\n\\u00a0\\n\\n\\n\\nWeb Server Plug-ins for IBM WebSphere Application Server (used with either WebSphere Application Server traditional or Liberty):\\n\\n\\n\\nFor V9.0.0.0 through 9.0.5.27:\\n\\u00b7 Upgrade to minimal fix pack levels as required by the interim fix and then apply the Web Server Plug-ins Interim Fix that resolves\\u00a0 PH71376 https://www.ibm.com/support/pages/node/7273976 \\n--OR--\\n\\u00b7 Apply Fix Pack 9.0.5.28 or later (targeted availability 2Q2026).\\u00a0\\u00a0\\n\\n\\n\\nFor V8.5.0.0 through 8.5.5.29:\\n\\u00b7 Upgrade to minimal fix pack levels as required by interim fix and then apply Web Server Plug-ins Interim Fix that resolves\\u00a0 PH71376 https://www.ibm.com/support/pages/node/7273976 \\n--OR--\\n\\u00b7 Apply Fix Pack 8.5.5.30 or later (targeted availability 3Q2026).\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eIBM strongly recommends addressing the vulnerability now by applying a currently available Web Server Plug-ins interim fix or fix pack that contains the fix for APAR PH71376.\u003c/p\u003e\u003cdiv\u003e\u0026nbsp;\u003c/div\u003e\u003cp\u003e\u003cstrong\u003eWeb Server Plug-ins for IBM WebSphere Application Server (used with either WebSphere Application Server traditional or Liberty):\u003c/strong\u003e\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eFor V9.0.0.0 through 9.0.5.27:\u003c/strong\u003e\u003cbr\u003e\\u00b7 Upgrade to minimal fix pack levels as required by the interim fix and then apply the Web Server Plug-ins Interim Fix that resolves\u0026nbsp;\u003ca href=\\\"https://www.ibm.com/support/pages/node/7273976\\\" rel=\\\"nofollow\\\"\u003ePH71376\u003c/a\u003e\u003cbr\u003e--OR--\u003cbr\u003e\\u00b7 Apply Fix Pack 9.0.5.28 or later (targeted availability 2Q2026).\u0026nbsp;\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eFor V8.5.0.0 through 8.5.5.29:\u003c/strong\u003e\u003cbr\u003e\\u00b7 Upgrade to minimal fix pack levels as required by interim fix and then apply Web Server Plug-ins Interim Fix that resolves\u0026nbsp;\u003ca href=\\\"https://www.ibm.com/support/pages/node/7273976\\\" rel=\\\"nofollow\\\"\u003ePH71376\u003c/a\u003e\u003cbr\u003e--OR--\u003cbr\u003e\\u00b7 Apply Fix Pack 8.5.5.30 or later (targeted availability 3Q2026).\u003c/p\u003e\", \"base64\": false}]}], \"references\": [{\"url\": \"https://www.ibm.com/support/pages/node/7276560\", \"tags\": [\"vendor-advisory\", \"patch\"]}], \"x_generator\": {\"engine\": \"ibm-cvegen\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere Web Server Plug-in component. This vulnerability can be exploited when an attacker impersonates the application server and sends crafted responses to the plug-in.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eIBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere Web Server Plug-in component. This vulnerability can be exploited when an attacker impersonates the application server and sends crafted responses to the plug-in.\u003c/p\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-94\", \"description\": \"CWE-94 Improper Control of Generation of Code (\u0027Code Injection\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"9a959283-ebb5-44b6-b705-dcc2bbced522\", \"shortName\": \"ibm\", \"dateUpdated\": \"2026-07-09T19:54:33.016Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-8858\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-09T19:54:33.016Z\", \"dateReserved\": \"2026-05-18T18:06:05.131Z\", \"assignerOrgId\": \"9a959283-ebb5-44b6-b705-dcc2bbced522\", \"datePublished\": \"2026-06-22T14:16:39.629Z\", \"assignerShortName\": \"ibm\"}",
"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…