CVE-2026-45738 (GCVE-0-2026-45738)

Vulnerability from cvelistv5 – Published: 2026-07-15 19:54 – Updated: 2026-07-15 19:54
VLAI
Title
Argo CD: Stored XSS in application link annotations enables developer-to-admin privilege escalation
Summary
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Prior to 3.2.12, 3.3.10, and 3.4.2, Argo CD users with application write access can set link.argocd.argoproj.io/* annotations whose pipe-separated values are rendered by ui/src/app/applications/components/application-summary/application-summary.tsx in the Summary tab URLs section as anchor href values without URL validation, allowing javascript: execution in a higher-privileged user's authenticated Argo CD origin session. This issue is fixed in versions 3.2.12, 3.3.10, and 3.4.2.
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
Impacted products
Vendor Product Version
argoproj argo-cd Affected: < 3.2.12
Affected: >= 3.3.0, < 3.3.10
Affected: >= 3.4.0-rc1, < 3.4.2
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Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "argo-cd",
          "vendor": "argoproj",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.2.12"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.3.0, \u003c 3.3.10"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.4.0-rc1, \u003c 3.4.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Prior to 3.2.12, 3.3.10, and 3.4.2, Argo CD users with application write access can set link.argocd.argoproj.io/* annotations whose pipe-separated values are rendered by ui/src/app/applications/components/application-summary/application-summary.tsx in the Summary tab URLs section as anchor href values without URL validation, allowing javascript: execution in a higher-privileged user\u0027s authenticated Argo CD origin session. This issue is fixed in versions 3.2.12, 3.3.10, and 3.4.2."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-15T19:54:51.634Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-h98r-wv3h-fr38",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-h98r-wv3h-fr38"
        },
        {
          "name": "https://github.com/argoproj/argo-cd/commit/00f83c41dcfd879f34f8e0248c860d704b41cf0f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/argoproj/argo-cd/commit/00f83c41dcfd879f34f8e0248c860d704b41cf0f"
        },
        {
          "name": "https://github.com/argoproj/argo-cd/commit/35ea43c537d6e8948e67f347317fc4f88b325122",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/argoproj/argo-cd/commit/35ea43c537d6e8948e67f347317fc4f88b325122"
        },
        {
          "name": "https://github.com/argoproj/argo-cd/commit/c8df5ff7acc403adcee1256da5d87081cd52f0a6",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/argoproj/argo-cd/commit/c8df5ff7acc403adcee1256da5d87081cd52f0a6"
        },
        {
          "name": "https://github.com/argoproj/argo-cd/releases/tag/v3.2.12",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/argoproj/argo-cd/releases/tag/v3.2.12"
        },
        {
          "name": "https://github.com/argoproj/argo-cd/releases/tag/v3.3.10",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/argoproj/argo-cd/releases/tag/v3.3.10"
        },
        {
          "name": "https://github.com/argoproj/argo-cd/releases/tag/v3.4.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/argoproj/argo-cd/releases/tag/v3.4.2"
        }
      ],
      "source": {
        "advisory": "GHSA-h98r-wv3h-fr38",
        "discovery": "UNKNOWN"
      },
      "title": "Argo CD: Stored XSS in application link annotations enables developer-to-admin privilege escalation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-45738",
    "datePublished": "2026-07-15T19:54:51.634Z",
    "dateReserved": "2026-05-13T06:54:34.219Z",
    "dateUpdated": "2026-07-15T19:54:51.634Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-45738",
      "date": "2026-06-14",
      "epss": "0.00037",
      "percentile": "0.11584"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-45738\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-07-15T20:17:05.057\",\"lastModified\":\"2026-07-15T20:29:17.680\",\"vulnStatus\":\"Undergoing Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Prior to 3.2.12, 3.3.10, and 3.4.2, Argo CD users with application write access can set link.argocd.argoproj.io/* annotations whose pipe-separated values are rendered by ui/src/app/applications/components/application-summary/application-summary.tsx in the Summary tab URLs section as anchor href values without URL validation, allowing javascript: execution in a higher-privileged user\u0027s authenticated Argo CD origin session. This issue is fixed in versions 3.2.12, 3.3.10, and 3.4.2.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"argoproj\",\"product\":\"argo-cd\",\"versions\":[{\"version\":\"\u003c 3.2.12\",\"status\":\"affected\"},{\"version\":\"\u003e= 3.3.0, \u003c 3.3.10\",\"status\":\"affected\"},{\"version\":\"\u003e= 3.4.0-rc1, \u003c 3.4.2\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N\",\"baseScore\":7.3,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.1,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"}]}],\"references\":[{\"url\":\"https://github.com/argoproj/argo-cd/commit/00f83c41dcfd879f34f8e0248c860d704b41cf0f\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/argoproj/argo-cd/commit/35ea43c537d6e8948e67f347317fc4f88b325122\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/argoproj/argo-cd/commit/c8df5ff7acc403adcee1256da5d87081cd52f0a6\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/argoproj/argo-cd/releases/tag/v3.2.12\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/argoproj/argo-cd/releases/tag/v3.3.10\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/argoproj/argo-cd/releases/tag/v3.4.2\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/argoproj/argo-cd/security/advisories/GHSA-h98r-wv3h-fr38\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}



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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.

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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.
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