Infinity for Reddit through 8.3.4 OAuth Login CSRF via LoginChromeCustomTabActivity

{
  "id": "fc2ede1e98c221e5f480e9f9bf2b64bfed7f99b4f1ff7f4c630f5e2b726c7fdd",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-116072",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Infinity for Reddit through 8.3.4 OAuth Login CSRF via LoginChromeCustomTabActivity",
    "summary": "Infinity for Reddit through 8.3.4 contains a login cross-site request forgery vulnerability that allows attackers to log victims into an attacker-controlled account because the exported LoginChromeCustomTabActivity redirect handler checks a hardcoded OAuth state value. Attackers can authorize the app's client ID with their own Reddit account, then deliver an infinity://localhost redirect containing their code and the constant state, causing the victim's posts, messages, and browsing to occur on the attacker's account.",
    "evidence": "cve:CVE-2026-116072",
    "products": [
      {
        "name": {
          "value": "Infinity for Reddit",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-116072",
      "aliases": [
        "CVE-2026-116072"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 5.3,
            "attackVector": "NETWORK",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
            "userInteraction": "PASSIVE",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "privilegesRequired": "NONE",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "LOW",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW"
          }
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 5.4,
            "attackVector": "NETWORK",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
            "integrityImpact": "LOW",
            "userInteraction": "REQUIRED",
            "attackComplexity": "LOW",
            "availabilityImpact": "NONE",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "LOW"
          }
        }
      ],
      "affected": [
        {
          "vendor": "Docile-Alligator",
          "product": "Infinity for Reddit",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "versionType": "semver",
              "lessThanOrEqual": "8.3.4"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-25T11:50:59.942Z",
      "provider": "cve",
      "references": [
        "https://github.com/Docile-Alligator/Infinity-For-Reddit/issues/1975",
        "https://github.com/Docile-Alligator/Infinity-For-Reddit",
        "https://github.com/Docile-Alligator/Infinity-For-Reddit/blob/v8.3.4/app/src/main/java/ml/docilealligator/infinityforreddit/activities/LoginChromeCustomTabActivity.java#L194-L205",
        "https://github.com/Docile-Alligator/Infinity-For-Reddit/blob/v8.3.4/app/src/main/java/ml/docilealligator/infinityforreddit/utils/APIUtils.java#L43",
        "https://github.com/Docile-Alligator/Infinity-For-Reddit/blob/v8.3.4/app/src/main/AndroidManifest.xml#L75-L92",
        "https://www.vulncheck.com/advisories/infinity-for-reddit-through-8.3.4-oauth-login-csrf-via-loginchromecustomtabactivity"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
          "shortName": "VulnCheck",
          "dateUpdated": "2026-10-25T11:50:59.942Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-116072",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 136266,
  "published_at": "2026-10-25T11:50:59.942+00:00"
}