Undefined behavior in the DOM: Streams component (Mozilla Firefox)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.31 % · percentile 24 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- mozilla
- NVD status
- Analyzed
Description
Undefined behavior in the DOM: Streams component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
Weaknesses (CWE)
- CWE-758 — Reliance on Undefined, Unspecified, or Implementation-Defined Behavior
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2068336
- https://www.mozilla.org/security/advisories/mfsa2026-100/
- https://www.mozilla.org/security/advisories/mfsa2026-101/
- https://www.mozilla.org/security/advisories/mfsa2026-102/
- https://www.mozilla.org/security/advisories/mfsa2026-103/
- https://www.mozilla.org/security/advisories/mfsa2026-97/
- https://www.mozilla.org/security/advisories/mfsa2026-98/
- https://www.mozilla.org/security/advisories/mfsa2026-99/
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N | CISA-ADP |
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-88923
- GCVE · GCVE-0-2026-100771
CERT-FR advisories
- CERTFR-2026-AVI-1244 — Multiples vulnérabilités dans Mozilla Thunderbird · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1240 — Multiples vulnérabilités dans les produits Mozilla · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*≥ 115.0 < 115.42.0cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*≥ 140.0.0 < 140.17.0cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*≥ 153.0 < 153.4.0cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*≥ 154.0.0 < 157.0.0cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*≥ 140.0 < 140.17.0cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*≥ 153.0 < 153.4.0cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*≥ 154.0 < 157.0
Affected products
| Product | Versions |
|---|---|
| Mozilla · Firefox | unaffected 115.42 ≤ 115.* ; unaffected 140.17 ≤ 140.* ; unaffected 153.4 ≤ 153.* ; unaffected 157 ≤ * |
| Mozilla · Thunderbird | unaffected 140.17 ≤ 140.* ; unaffected 153.4 ≤ 153.* ; unaffected 157 ≤ * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |