CVE-2025-9180: Same-origin policy bypass in the Graphics: Canvas2D component

Published Aug 19, 2025
·
Updated

'Same-origin policy bypass in the Graphics: Canvas2D component.' This vulnerability affects Firefox < 142, Firefox ESR < 115.27, Firefox ESR < 128.14, Firefox ESR < 140.2, Thunderbird < 142, Thunderbird < 128.14, and Thunderbird < 140.2.

Other sources

Same-origin policy bypass in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 142, Firefox ESR 115.27, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.14, and Thunderbird 140.2.

— Ubuntu

Affected Software

30 affected componentsFixes available
Mozilla Firefox<142
Mozilla Firefox ESR<115.27, <128.14, <140.2
Mozilla Thunderbird<142, <128.14, <140.2
Mozilla Thunderbird<140.2
140.2
Mozilla Firefox ESR<140.2
140.2
Mozilla Firefox ESR<115.27
115.27
Mozilla Thunderbird<142
142
Mozilla Firefox<115.27.0
Mozilla Firefox<142.0
Mozilla Firefox>=128.0<128.14.0
Mozilla Firefox>=140.0<140.2.0
Mozilla Thunderbird<128.14.0
Mozilla Thunderbird<142.0
Mozilla Thunderbird>=140.0<140.2.0
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<142
142
Mozilla Firefox ESR<128.14
128.14
Mozilla Thunderbird<128.14
128.14
debian/firefox
159.0-1
debian/firefox-esr
140.12.0esr-1~deb12u1153.6.0esr-1~deb12u2140.15.0esr-1~deb13u1153.6.0esr-1~deb13u1153.5.1esr-1153.6.0esr-1
debian/thunderbird
1:140.12.0esr-1~deb12u11:153.6.0esr-1~deb12u11:140.12.0esr-1~deb13u11:153.6.0esr-1~deb13u11:153.5.0esr-11:153.6.0esr-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 140.2
  2. Upgrade

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

    Fixed in 115.27
  3. Upgrade

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

    Fixed in 142
  4. Upgrade

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

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

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

    Fixed in 128.14
  6. Upgrade

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

    Fixed in 159.0-1
  7. Upgrade

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

    Fixed in 140.12.0esr-1~deb12u1Fixed in 153.6.0esr-1~deb12u2Fixed in 140.15.0esr-1~deb13u1Fixed in 153.6.0esr-1~deb13u1Fixed in 153.5.1esr-1Fixed in 153.6.0esr-1
  8. Upgrade

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

    Fixed in 1:140.12.0esr-1~deb12u1Fixed in 1:153.6.0esr-1~deb12u1Fixed in 1:140.12.0esr-1~deb13u1Fixed in 1:153.6.0esr-1~deb13u1Fixed in 1:153.5.0esr-1Fixed in 1:153.6.0esr-1
  9. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 142
  10. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 115.27
  11. Upgrade

    Upgrade Firefox ESR / Thunderbird to a version that resolves this vulnerability.

    Fixed in 128.14
  12. Upgrade

    Upgrade Firefox ESR / Thunderbird to a version that resolves this vulnerability.

    Fixed in 140.2
  13. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 142

Event History

Aug 19, 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·08:33 PM
Data Sourced
via MITRE·08:33 PM
Description
Data Sourced
via Red Hat·09:01 PM
DescriptionSeverityAffected Software
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-2025-9180?

CVE-2025-9180 has a moderate severity level due to its ability to bypass the same-origin policy in affected applications.

2

How do I fix CVE-2025-9180?

To mitigate CVE-2025-9180, users should update their Firefox or Thunderbird applications to the latest version that addresses this vulnerability.

3

Which versions are affected by CVE-2025-9180?

CVE-2025-9180 affects Firefox versions prior to 142, Firefox ESR prior to 115.27, 128.14, and 140.2, as well as Thunderbird versions prior to 142, 128.14, and 140.2.

4

What components are impacted by CVE-2025-9180?

CVE-2025-9180 impacts the Graphics: Canvas2D component within the affected versions of Firefox and Thunderbird.

5

Can CVE-2025-9180 lead to data leakage?

Yes, due to the same-origin policy bypass, CVE-2025-9180 can potentially lead to unauthorized access to sensitive data across different origins.

Company

Resources

Contact

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