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CVE-2018-5115

Status: ModifiedHigh (7.5)—

If an HTTP authentication prompt is triggered by a background network request from a page or extension, it is displayed over the currently loaded foreground page. Although the prompt contains the real domain making the request, this can result in user confusion about the originating site of the authentication request and may cause users to mistakenly send private credential information to a third party site. This vulnerability affects Firefox < 58.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (2)

Canonical — Ubuntu LinuxMozilla — Firefox

CWEs

References

Raw JSON (NVD)

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  "id": "CVE-2018-5115",
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          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
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  "lastModified": "2026-06-17T01:59:38.967",
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