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FirefoxWeb browser · Mozilla

CVE-2024-10458

HIGH · 7.5 CVSS v3.1 Published 2024-10-29
Fix available
A fix is available. Upgrade to 115.17 / 128.4.0 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A permission leak could have occurred from a trusted site to an untrusted site via `embed` or `object` elements. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Firefox ESR < 115.17, Thunderbird < 128.4, and Thunderbird < 132.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

A permission leak vulnerability in Firefox and Thunderbird allows a trusted site to improperly share permissions with an untrusted site through the use of embed or object HTML elements. This cross-origin permission leak could enable unauthorized access to privileged browser operations or data.

MitigationUpdate all affected Firefox installations to version 132 or later, and Thunderbird to version 128.4 or later (or ESR versions 128.4/115.17 as applicable). This is a client-side browser vulnerability that does not require server-side changes.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
FirefoxWeb browser
Affected:< 115.17< 132.0>= 116.0, < 128.4.0
ThunderbirdApplication
Affected:< 128.4.0>= 129.0, < 132.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check installed Firefox version
    Open Firefox, click the menu button (three horizontal lines), select Help, then About Firefox. Alternatively, type 'about:support' in the address bar and look for the version number under 'Application Basics'.
    Affected if Version is before 115.17, OR between 116.0 and 128.3.x inclusive, OR between 129.0 and 131.x inclusive. Fixed in 115.17, 128.4.0, and 132.0 or later.
  2. Check installed Thunderbird version
    Open Thunderbird, click the menu button, select Help, then About Thunderbird. Alternatively, type 'about:support' in the address bar and look for the version number.
    Affected if Version is before 128.4.0, OR between 129.0 and 131.x inclusive. Fixed in 128.4.0 and 132.0 or later.
  3. Confirm browser is the affected application
    Verify the affected software is Mozilla Firefox or Mozilla Thunderbird specifically, as other browsers or derivatives are not covered by this CVE.
    Affected if The browser being used is Firefox or Thunderbird and the version falls into the affected ranges above.

You are affected if you are running any version of Firefox before 115.17, 116.0-128.3.x, or 129.0-131.x; or any version of Thunderbird before 128.4.0 or 129.0-131.x.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 115.17 / 128.4.0 / 132.0 or later
Fixed in 115.17128.4.0132.0
Interim mitigation

Update all affected Firefox installations to version 132 or later, and Thunderbird to version 128.4 or later (or ESR versions 128.4/115.17 as applicable). This is a client-side browser vulnerability that does not require server-side changes.

Recommended fix High confidence

Firefox 132.0 (release) / Firefox ESR 128.4.0 / Firefox ESR 115.17 / Thunderbird 128.4.0 or 132.0

  1. 1. Check current installed version of Firefox or Thunderbird by navigating to Menu > Help > About (or running 'firefox --version' or 'thunderbird --version' in terminal)
  2. 2. For Firefox users: If on release channel, upgrade to Firefox 132.0 or later from https://www.mozilla.org/en-US/firefox/
  3. 3. For Firefox ESR users: If on ESR 128.x, upgrade to Firefox ESR 128.4.0 or later; if on ESR 115.x, upgrade to Firefox ESR 115.17 or later
  4. 4. For Thunderbird users: Upgrade to Thunderbird 128.4.0 or later, or Thunderbird 132.0 or later
  5. 5. After upgrade, verify the new version by checking Menu > Help > About to confirm the installation was successful
  6. 6. Restart the application to ensure all components are updated
Caveat Major version upgrades (e.g., 115 to 132) may introduce UI changes or deprecate add-ons; always review release notes before upgrading in production environments

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Firefox Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing1.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,090
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,744.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-10458 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data