CVE-2026-100826
MEDIUMCVSS 6.5/10EPSS 0.23%
Last modified
CVE-2026-100826 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Denial-of-service in the Storage: StorageManager component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.
Description
Denial-of-service in the Storage: StorageManager component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 153.4.0 |
| Mozilla | Firefox | >= 154.0.0, < 157.0.0 |
| Mozilla | Thunderbird | < 153.4.0 |
| Mozilla | Thunderbird | >= 154.0, < 157.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2059222Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2026-100/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-101/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-103/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-97/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-100826?
Denial-of-service in the Storage: StorageManager component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
How severe is CVE-2026-100826?
CVE-2026-100826 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.
How do I fix CVE-2026-100826?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-100820Privilege escalation in the Address Bar component. This vuln…8.8
- CVE-2026-100821Site isolation issue in the Panning and Zooming component. T…4.7
- CVE-2026-100822Spoofing issue in the Networking: HTTP component. This vulne…5.4
- CVE-2026-100823Spoofing issue in the Downloads component in Firefox for And…5.4
- CVE-2026-100824Privilege escalation in the Places component. This vulnerabi…8.8
- CVE-2026-100825Use-after-free in the JavaScript Engine: JIT component. This…8.8
- CVE-2026-100828Mitigation bypass in the Bookmarks & History component. This…9.6
- CVE-2026-100829Mitigation bypass in the DOM: Security component. This vulne…9.6
- CVE-2026-10083The APCu Manager WordPress plugin before 4.5.0 does not esca…7.5
- CVE-2026-100830Mitigation bypass in the DOM: Navigation component. This vul…8.1
- CVE-2026-100831Use-after-free in the DOM: UI Events & Focus Handling compon…8.8
- CVE-2026-100832Use-after-free in the Graphics: Canvas2D component. This vul…8.8
Are you affected by CVE-2026-100826?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST