CVE-2024-7524

MEDIUM

6.1

CVSS Score

Published: August 6, 2024 at 12:38 PM UTC

Updated: June 17, 2026 at 08:20 AM UTC

2 products affected across 1 vendorFirefoxFirefox ESR

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Severity

MEDIUM6.1

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

Description

Firefox adds web-compatibility shims in place of some tracking scripts blocked by Enhanced Tracking Protection. On a site protected by Content Security Policy in "strict-dynamic" mode, an attacker able to inject an HTML element could have used a DOM Clobbering attack on some of the shims and achieved XSS, bypassing the CSP strict-dynamic protection. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, and Firefox ESR < 128.1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Firefox · Mozilla

95%

v < 129v < 129.0

Affected range stops below 129, so it looks safe — our inference, not a vendor statement

Affected range stops below 129.0, so it looks safe — our inference, not a vendor statement

Firefox ESR · Mozilla

95%

v < 115.14v < 128.1116.0 ≤ v < 128.1

Affected range stops below 115.14, so it looks safe — our inference, not a vendor statement

Affected range stops below 128.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

Issue TrackingPermissions Required

Source: [email protected]

https://bugzilla.mozilla.org/show_bug.cgi?id=1909241

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2024-33/

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2024-34/

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2024-35/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: CHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-79

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