# CVE-2026-124928: Firefox SVG component mitigation bypass

Source: https://junglewise.ai/threats/cve-2026-124928-mitigation-bypass-in-the-svg-component-this-vulnerability-was  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-124928 · Severity: info · Published 2026-11-10

Firefox's SVG (Scalable Vector Graphics) rendering engine contains a mitigation bypass that could allow an attacker to circumvent existing security protections. An exploit of this vulnerability could lead to arbitrary code execution or sandbox escape when a user visits a malicious webpage containing specially crafted SVG content. This vulnerability has been fixed in Firefox 160.

Technologies: [Mozilla Firefox](https://junglewise.ai/threats/technologies/firefox). Vendors: [Mozilla](https://junglewise.ai/threats/vendors/mozilla).

## Quick answers

**Is CVE-2026-124928 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-124928 being exploited in the wild.

**How severe is CVE-2026-124928?** Informational severity, published 10 November 2026.

**Which products and versions are affected?** Mozilla Firefox before 160.

**Is there a fix for CVE-2026-124928?** Yes: fixed in Firefox 160. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-124928?** Check whether you run Mozilla Firefox at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in Firefox 160

## Technical details

A mitigation bypass vulnerability exists in the Firefox SVG component, allowing an attacker to circumvent security controls designed to prevent exploitation of other bugs. The vulnerability requires the user to visit a malicious website or open a crafted SVG file. Successful exploitation could enable arbitrary code execution or sandbox escape.

## Affected products

- Mozilla Firefox before 160

## Timeline

- 2026-11-10: disclosed

## References

- [https://bugzilla.mozilla.org/show_bug.cgi?id=2080652](https://bugzilla.mozilla.org/show_bug.cgi?id=2080652)
- [https://www.mozilla.org/security/advisories/mfsa2026-125/](https://www.mozilla.org/security/advisories/mfsa2026-125/)

## Related threats

- [Firefox privilege escalation in Nimbus Desktop Client](https://junglewise.ai/threats/cve-2026-124951-privilege-escalation-in-the-nimbus-desktop-client-component-this)
- [Firefox same-origin policy bypass in CSS Parsing and Computation](https://junglewise.ai/threats/cve-2026-124950-same-origin-policy-bypass-in-the-css-parsing-and-computation)
- [Firefox other issue in SVG component](https://junglewise.ai/threats/cve-2026-124949-other-issue-in-the-svg-component-this-vulnerability-was-fixed-in)
- [Mozilla Firefox use-after-free in Graphics component](https://junglewise.ai/threats/cve-2026-124948-incorrect-boundary-conditions-use-after-free-in-the-graphics)
- [Firefox incorrect boundary conditions in Graphics component](https://junglewise.ai/threats/cve-2026-124947-incorrect-boundary-conditions-in-the-graphics-component-this)