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FKIE_CVE-2026-88058

Vulnerability from fkie_nvd - Published: 2026-09-10 19:17 - Updated: 2026-09-11 16:17
Severity
8.6 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Summary
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.30, 21.2.22, and 22.1.4, Angular server-side rendering (SSR) in @angular/platform-server serializes ProcessingInstruction DOM nodes inside fallback raw-content elements without escaping matching ancestor closing tags. ProcessingInstruction data escaped greater-than characters but left less-than characters untouched and did not inspect fallback ancestors, so data such as a matching closing tag prematurely terminates noscript, iframe, noembed, or noframes containers. The vulnerable nodes cannot be authored through standard Angular templates; reachability requires application or library code using inject(DOCUMENT).createProcessingInstruction with attacker-controlled data or Renderer2 DOM insertion inside a fallback container. In HTML5 RAWTEXT parsing, the premature close causes subsequent sibling elements to be interpreted as live HTML and enables arbitrary JavaScript execution in a victim's browser. This issue is fixed in versions 20.3.30, 21.2.22, and 22.1.4.
References
security-advisories@github.comhttps://github.com/angular/angular/commit/73d8bbd27cb46495426d4132975a1355b47ad915
security-advisories@github.comhttps://github.com/angular/angular/commit/89b20568dfaee1ec8e0b3bcf1872acdddd2f4fef
security-advisories@github.comhttps://github.com/angular/angular/commit/ba3bc47b20b3d12f5eb141ec9c651373ae4d15e8
security-advisories@github.comhttps://github.com/angular/angular/issues/70146
security-advisories@github.comhttps://github.com/angular/angular/releases/tag/v20.3.30
security-advisories@github.comhttps://github.com/angular/angular/releases/tag/v21.2.22
security-advisories@github.comhttps://github.com/angular/angular/releases/tag/v22.1.4
security-advisories@github.comhttps://github.com/angular/angular/security/advisories/GHSA-j3r3-mxqp-r2p4
security-advisories@github.comhttps://github.com/angular/domino/commit/04f987dc08ff3736b427f50941adf1722458528f
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/angular/angular/issues/70146
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/angular/angular/security/advisories/GHSA-j3r3-mxqp-r2p4
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "angular",
          "vendor": "angular",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 19.2.25"
            },
            {
              "status": "affected",
              "version": "\u003e= 20.0.0, \u003c 20.3.30"
            },
            {
              "status": "affected",
              "version": "\u003e= 21.0.0, \u003c 21.2.22"
            },
            {
              "status": "affected",
              "version": "\u003e= 22.0.0, \u003c 22.1.4"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.30, 21.2.22, and 22.1.4, Angular server-side rendering (SSR) in @angular/platform-server serializes ProcessingInstruction DOM nodes inside fallback raw-content elements without escaping matching ancestor closing tags. ProcessingInstruction data escaped greater-than characters but left less-than characters untouched and did not inspect fallback ancestors, so data such as a matching closing tag prematurely terminates noscript, iframe, noembed, or noframes containers. The vulnerable nodes cannot be authored through standard Angular templates; reachability requires application or library code using inject(DOCUMENT).createProcessingInstruction with attacker-controlled data or Renderer2 DOM insertion inside a fallback container. In HTML5 RAWTEXT parsing, the premature close causes subsequent sibling elements to be interpreted as live HTML and enables arbitrary JavaScript execution in a victim\u0027s browser. This issue is fixed in versions 20.3.30, 21.2.22, and 22.1.4."
    }
  ],
  "id": "CVE-2026-88058",
  "lastModified": "2026-09-11T16:17:48.513",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-88058",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-11T15:14:28.505071Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-10T19:17:41.800",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/angular/angular/commit/73d8bbd27cb46495426d4132975a1355b47ad915"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/angular/angular/commit/89b20568dfaee1ec8e0b3bcf1872acdddd2f4fef"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/angular/angular/commit/ba3bc47b20b3d12f5eb141ec9c651373ae4d15e8"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/angular/angular/issues/70146"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/angular/angular/releases/tag/v20.3.30"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/angular/angular/releases/tag/v21.2.22"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/angular/angular/releases/tag/v22.1.4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/angular/angular/security/advisories/GHSA-j3r3-mxqp-r2p4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/angular/domino/commit/04f987dc08ff3736b427f50941adf1722458528f"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/angular/angular/issues/70146"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/angular/angular/security/advisories/GHSA-j3r3-mxqp-r2p4"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        },
        {
          "lang": "en",
          "value": "CWE-116"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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