CVE-2026-88058

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.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-116",
        "CWE-79"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88058.json"
}

References

Affected packages

Git / github.com/angular/angular

Affected ranges

Type

GIT

Repo

https://github.com/angular/angular

Events

Introduced

e7566c3c475560616f97de2ab3c8f8d6f83be015

Last Affected

6d1753b46b7389c10aa17da2327043fbf5296035

Introduced

40e2b5b4d13792ed7c46a1d22afcf6c12ac9c679

Fixed

4ee0421f0c4c84d9042bc94cf9613d005f8f9505

Introduced

00dcbf2eeb3fd18ed39148e4bc9e49a5b35cae0c

Fixed

4c0bc4345a41ab48d8361e0bff18191da9c8c065

Introduced

862d27f25c4d3bf2fe2918b76759f3f4a83563d1

Fixed

898380974d49cf7976e9d89cc74a0801a26ce7b1

Fixed

73d8bbd27cb46495426d4132975a1355b47ad915

Fixed

89b20568dfaee1ec8e0b3bcf1872acdddd2f4fef

Fixed

ba3bc47b20b3d12f5eb141ec9c651373ae4d15e8

Database specific

Show details

{
    "cpe":  "cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:*",
    "extracted_events":  [
        {
            "introduced":  "19.0.0"
        },
        {
            "last_affected":  "19.2.25"
        },
        {
            "introduced":  "20.0.0"
        },
        {
            "fixed":  "20.3.30"
        },
        {
            "introduced":  "21.0.0"
        },
        {
            "fixed":  "21.2.22"
        },
        {
            "introduced":  "22.0.0"
        },
        {
            "fixed":  "22.1.4"
        }
    ],
    "source":  [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Type

GIT

Repo

https://github.com/angular/domino

Events

Introduced

Fixed

04f987dc08ff3736b427f50941adf1722458528f

Database specific

Show details

{
    "source":  "REFERENCES"
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-88058.json"