CVE-2023-6211

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Published Nov 21, 2023 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Description

If an attacker needed a user to load an insecure http: page and knew that user had enabled HTTPS-only mode, the attacker could have tricked the user into clicking to grant an HTTPS-only exception if they could get the user to participate in a clicking game. This vulnerability affects Firefox < 120.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Mozilla

Firefox

affected

Version	Status	Constraints
`unspecified`	affected	< 120

Configuration 1 [-]

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
Ubuntu USN	USN-6509-1	Firefox vulnerabilities

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.494% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=1850200
https://security.gentoo.org/glsa/202401-10
https://www.mozilla.org/security/advisories/mfsa2023-49/

History

No history.

Subscriptions

Mozilla Firefox

Weaknesses

CWE-1021

Sources

CVE record Updated: Feb 13, 2025, 5:26 PM

Status: PUBLISHED
Assigner: mozilla
Published: Nov 21, 2023, 2:28 PM
Updated: Feb 13, 2025, 5:26 PM
Reserved: Nov 20, 2023, 1:33 PM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 6:50 AM

Status: Modified
Published: Nov 21, 2023, 3:15 PM
Modified: Jun 17, 2026, 6:50 AM

View source JSON

Red Hat No data

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OpenCVE enrichment No data

No data.

{"affected": [{"affectedData": [{"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "120", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "matchCriteriaId": "30F5F1B5-825D-4DC4-A6F0-ED5AD1B031F2", "versionEndExcluding": "120.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "If an attacker needed a user to load an insecure http: page and knew that user had enabled HTTPS-only mode, the attacker could have tricked the user into clicking to grant an HTTPS-only exception if they could get the user to participate in a clicking game. This vulnerability affects Firefox < 120."}, {"lang": "es", "value": "Si un atacante necesitaba que un usuario cargara una p\u00e1gina http: insegura y sab\u00eda que el usuario hab\u00eda habilitado el modo solo HTTPS, el atacante podr\u00eda haber enga\u00f1ado al usuario para que hiciera clic para otorgar una excepci\u00f3n solo HTTPS si pudiera lograr que el usuario participara en una juego de clics. Esta vulnerabilidad afecta a Firefox < 120."}], "id": "CVE-2023-6211", "lastModified": "2026-06-17T06:50:18.620", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2023-11-21T15:15:08.057", "references": [{"source": "security@mozilla.org", "tags": ["Issue Tracking", "Permissions Required"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1850200"}, {"source": "security@mozilla.org", "url": "https://security.gentoo.org/glsa/202401-10"}, {"source": "security@mozilla.org", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2023-49/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Permissions Required"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1850200"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.gentoo.org/glsa/202401-10"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2023-49/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1021"}], "source": "nvd@nist.gov", "type": "Primary"}]}