CVE-2026-5516 (GCVE-0-2026-5516)

Vulnerability from cvelistv5 – Published: 2026-05-27 13:00 – Updated: 2026-05-27 14:43
VLAI
Title
IBM WebSphere Application Server Liberty is affected by a security bypass vulnerability
Summary
IBM WebSphere Application Server - Liberty 22.0.0.11 through 26.0.0.5 IBM WebSphere Application Server Liberty could allow a remote attacker to bypass security under limited conditions by exploiting a specific timing window.
Severity
4.4 (Medium)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
Assigner
ibm
References
URL Tags
https://www.ibm.com/support/pages/node/7273425 vendor-advisorypatch
Impacted products
Vendor Product Version
IBM WebSphere Application Server - Liberty Affected: 22.0.0.11 , ≤ 26.0.0.5 (semver)
    cpe:2.3:a:ibm:websphere_application_server___liberty:22.0.0.11:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:websphere_application_server___liberty:26.0.0.5:*:*:*:*:*:*:*
 Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-5516",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-27T14:43:39.839723Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-27T14:43:52.965Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:websphere_application_server___liberty:22.0.0.11:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:websphere_application_server___liberty:26.0.0.5:*:*:*:*:*:*:*"
          ],
          "product": "WebSphere Application Server - Liberty",
          "vendor": "IBM",
          "versions": [
            {
              "lessThanOrEqual": "26.0.0.5",
              "status": "affected",
              "version": "22.0.0.11",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eIBM WebSphere Application Server - Liberty 22.0.0.11 through 26.0.0.5 IBM WebSphere Application Server Liberty could allow a remote attacker to bypass security under limited conditions by exploiting a specific timing window.\u003c/p\u003e"
            }
          ],
          "value": "IBM WebSphere Application Server - Liberty 22.0.0.11 through 26.0.0.5 IBM WebSphere Application Server Liberty could allow a remote attacker to bypass security under limited conditions by exploiting a specific timing window."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T13:00:04.029Z",
        "orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
        "shortName": "ibm"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "patch"
          ],
          "url": "https://www.ibm.com/support/pages/node/7273425"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eIBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH70798.\u0026nbsp;To determine if a feature is enabled for IBM WebSphere Application Server Liberty, refer to \u003ca href=\"https://www.ibm.com/support/pages/node/6553910\" rel=\"nofollow\"\u003eHow to determine if Liberty is using a specific feature\u003c/a\u003e.\u0026nbsp;\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFor IBM WebSphere Application Server Liberty 22.0.0.11 - 26.0.0.5 using the appSecurity-3.0, appSecurity-4.0 or appSecurity-5.0 feature(s):\u0026nbsp;\u003c/strong\u003e\u003cbr\u003e\u00b7 Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves \u003ca href=\"https://www.ibm.com/support/pages/node/7273239\" rel=\"nofollow\"\u003ePH70798\u003c/a\u003e\u003cbr\u003e--OR--\u003cbr\u003e\u00b7 Apply Liberty Fix Pack 26.0.0.6 or later (targeted availability 3Q2026).\u0026nbsp;\u003cbr\u003e\u003cbr\u003eAdditional interim fixes may be available and linked off the interim fix download page.\u003c/p\u003e"
            }
          ],
          "value": "IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH70798.\u00a0To determine if a feature is enabled for IBM WebSphere Application Server Liberty, refer to  How to determine if Liberty is using a specific feature https://www.ibm.com/support/pages/node/6553910 .\u00a0\n\nFor IBM WebSphere Application Server Liberty 22.0.0.11 - 26.0.0.5 using the appSecurity-3.0, appSecurity-4.0 or appSecurity-5.0 feature(s):\u00a0\n\u00b7 Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves  PH70798 https://www.ibm.com/support/pages/node/7273239 \n--OR--\n\u00b7 Apply Liberty Fix Pack 26.0.0.6 or later (targeted availability 3Q2026).\u00a0\n\nAdditional interim fixes may be available and linked off the interim fix download page."
        }
      ],
      "title": "IBM WebSphere Application Server Liberty is affected by a security bypass vulnerability",
      "x_generator": {
        "engine": "ibm-cvegen"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
    "assignerShortName": "ibm",
    "cveId": "CVE-2026-5516",
    "datePublished": "2026-05-27T13:00:04.029Z",
    "dateReserved": "2026-04-03T21:59:13.972Z",
    "dateUpdated": "2026-05-27T14:43:52.965Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-5516",
      "date": "2026-05-28",
      "epss": "0.00037",
      "percentile": "0.11394"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-5516\",\"sourceIdentifier\":\"psirt@us.ibm.com\",\"published\":\"2026-05-27T14:17:34.257\",\"lastModified\":\"2026-05-27T14:53:51.833\",\"vulnStatus\":\"Undergoing Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"IBM WebSphere Application Server - Liberty 22.0.0.11 through 26.0.0.5 IBM WebSphere Application Server Liberty could allow a remote attacker to bypass security under limited conditions by exploiting a specific timing window.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@us.ibm.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":4.4,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":0.7,\"impactScore\":3.6}]},\"references\":[{\"url\":\"https://www.ibm.com/support/pages/node/7273425\",\"source\":\"psirt@us.ibm.com\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-5516\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-05-27T14:43:39.839723Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-05-27T14:43:46.126Z\"}}], \"cna\": {\"title\": \"IBM WebSphere Application Server Liberty is affected by a security bypass vulnerability\", \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.4, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"HIGH\", \"confidentialityImpact\": \"HIGH\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:ibm:websphere_application_server___liberty:22.0.0.11:*:*:*:*:*:*:*\", \"cpe:2.3:a:ibm:websphere_application_server___liberty:26.0.0.5:*:*:*:*:*:*:*\"], \"vendor\": \"IBM\", \"product\": \"WebSphere Application Server - Liberty\", \"versions\": [{\"status\": \"affected\", \"version\": \"22.0.0.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"26.0.0.5\"}]}], \"solutions\": [{\"lang\": \"en\", \"value\": \"IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH70798.\\u00a0To determine if a feature is enabled for IBM WebSphere Application Server Liberty, refer to  How to determine if Liberty is using a specific feature https://www.ibm.com/support/pages/node/6553910 .\\u00a0\\n\\nFor IBM WebSphere Application Server Liberty 22.0.0.11 - 26.0.0.5 using the appSecurity-3.0, appSecurity-4.0 or appSecurity-5.0 feature(s):\\u00a0\\n\\u00b7 Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves  PH70798 https://www.ibm.com/support/pages/node/7273239 \\n--OR--\\n\\u00b7 Apply Liberty Fix Pack 26.0.0.6 or later (targeted availability 3Q2026).\\u00a0\\n\\nAdditional interim fixes may be available and linked off the interim fix download page.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eIBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH70798.\u0026nbsp;To determine if a feature is enabled for IBM WebSphere Application Server Liberty, refer to \u003ca href=\\\"https://www.ibm.com/support/pages/node/6553910\\\" rel=\\\"nofollow\\\"\u003eHow to determine if Liberty is using a specific feature\u003c/a\u003e.\u0026nbsp;\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFor IBM WebSphere Application Server Liberty 22.0.0.11 - 26.0.0.5 using the appSecurity-3.0, appSecurity-4.0 or appSecurity-5.0 feature(s):\u0026nbsp;\u003c/strong\u003e\u003cbr\u003e\\u00b7 Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves \u003ca href=\\\"https://www.ibm.com/support/pages/node/7273239\\\" rel=\\\"nofollow\\\"\u003ePH70798\u003c/a\u003e\u003cbr\u003e--OR--\u003cbr\u003e\\u00b7 Apply Liberty Fix Pack 26.0.0.6 or later (targeted availability 3Q2026).\u0026nbsp;\u003cbr\u003e\u003cbr\u003eAdditional interim fixes may be available and linked off the interim fix download page.\u003c/p\u003e\", \"base64\": false}]}], \"references\": [{\"url\": \"https://www.ibm.com/support/pages/node/7273425\", \"tags\": [\"vendor-advisory\", \"patch\"]}], \"x_generator\": {\"engine\": \"ibm-cvegen\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"IBM WebSphere Application Server - Liberty 22.0.0.11 through 26.0.0.5 IBM WebSphere Application Server Liberty could allow a remote attacker to bypass security under limited conditions by exploiting a specific timing window.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eIBM WebSphere Application Server - Liberty 22.0.0.11 through 26.0.0.5 IBM WebSphere Application Server Liberty could allow a remote attacker to bypass security under limited conditions by exploiting a specific timing window.\u003c/p\u003e\", \"base64\": false}]}], \"providerMetadata\": {\"orgId\": \"9a959283-ebb5-44b6-b705-dcc2bbced522\", \"shortName\": \"ibm\", \"dateUpdated\": \"2026-05-27T13:00:04.029Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-5516\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-27T14:43:52.965Z\", \"dateReserved\": \"2026-04-03T21:59:13.972Z\", \"assignerOrgId\": \"9a959283-ebb5-44b6-b705-dcc2bbced522\", \"datePublished\": \"2026-05-27T13:00:04.029Z\", \"assignerShortName\": \"ibm\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.