FKIE_CVE-2026-57501

Vulnerability from fkie_nvd - Published: 2026-07-09 23:17 - Updated: 2026-07-09 23:17
Severity
0.0 (None) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:N
Summary
Zen is a firefox-based browser. Prior to 1.21.5b, Zen's glance and split-view context-menu actions, Open link in glance and Split link in new tab, load a page-controlled link URL with the System principal instead of the originating page's principal, allowing a malicious web page to place a link to a file URL that can load with System privileges when opened through either context-menu item and bypass the content-to-file security check that blocks an ordinary click. This issue is fixed in version 1.21.5b.
References
security-advisories@github.comhttps://github.com/zen-browser/desktop/commit/44f7616238208200547c7df500d945752d7b6379
security-advisories@github.comhttps://github.com/zen-browser/desktop/releases/tag/1.21.5b
security-advisories@github.comhttps://github.com/zen-browser/desktop/security/advisories/GHSA-vpvg-hp3v-rm5q
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "desktop",
          "vendor": "zen-browser",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.21.5b"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Zen is a firefox-based browser. Prior to 1.21.5b, Zen\u0027s glance and split-view context-menu actions, Open link in glance and Split link in new tab, load a page-controlled link URL with the System principal instead of the originating page\u0027s principal, allowing a malicious web page to place a link to a file URL that can load with System privileges when opened through either context-menu item and bypass the content-to-file security check that blocks an ordinary click. This issue is fixed in version 1.21.5b."
    }
  ],
  "id": "CVE-2026-57501",
  "lastModified": "2026-07-09T23:17:05.353",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 0.0,
          "baseSeverity": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 0.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-09T23:17:05.353",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/zen-browser/desktop/commit/44f7616238208200547c7df500d945752d7b6379"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/zen-browser/desktop/releases/tag/1.21.5b"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/zen-browser/desktop/security/advisories/GHSA-vpvg-hp3v-rm5q"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-266"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}



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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.

Sightings

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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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  • 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.