CVE-2025-8039: Search terms persisted in URL bar

Published Jul 22, 2025
·
Updated

In some cases search terms persisted in the URL bar even after navigating away from the search page. This vulnerability was fixed in Firefox 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1.

Affected Software

19 affected componentsFixes available
Mozilla Firefox ESR<140.1
140.1
Mozilla Thunderbird<140.1
140.1
Mozilla Thunderbird<141
141
Mozilla Firefox<140.1
Mozilla Firefox<141.0
Mozilla Thunderbird<140.1
Mozilla Thunderbird<141.0
ubuntu/mozjs52*
ubuntu/mozjs38*
ubuntu/mozjs68*
ubuntu/mozjs52*
ubuntu/mozjs102*
ubuntu/mozjs78*
ubuntu/mozjs91*
ubuntu/thunderbird<1:140.7.1+build1-0ubuntu0.22.04.1
1:140.7.1+build1-0ubuntu0.22.04.1
ubuntu/mozjs102*
ubuntu/mozjs115*
Mozilla Firefox<141
141
debian/firefox
159.0-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 140.1
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 141
  3. Upgrade

    Upgrade ubuntu/thunderbird to a version that resolves this vulnerability.

    Fixed in 1:140.7.1+build1-0ubuntu0.22.04.1
  4. Upgrade

    Upgrade debian/firefox to a version that resolves this vulnerability.

    Fixed in 159.0-1
  5. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 141
  6. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 140.1
  7. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 141
  8. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 140.1

Event History

Jul 22, 2025
CVE Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Data Sourced
via Ubuntu·12:00 AM
RemedyDescriptionSeverityAffected Software
CVE Published
via MITRE·08:49 PM
Data Sourced
via MITRE·08:49 PM
Description
Data Sourced
via OSV·09:15 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·09:15 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2025-8039?

The severity of CVE-2025-8039 is considered moderate as it involves search terms persisting in the URL bar.

2

How do I fix CVE-2025-8039?

To fix CVE-2025-8039, update your Mozilla Firefox to version 141 or later, or Firefox ESR to version 140.2 or later.

3

What versions of Firefox are affected by CVE-2025-8039?

CVE-2025-8039 affects Mozilla Firefox versions prior to 141 and Firefox ESR versions prior to 140.1.

4

Does CVE-2025-8039 affect other browsers?

CVE-2025-8039 is specific to Mozilla Firefox and Firefox ESR and does not affect other web browsers.

5

What type of issue does CVE-2025-8039 represent?

CVE-2025-8039 represents a data leakage issue where search terms remain visible in the URL bar after page navigation.

Company

Resources

Contact

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