CVE-2025-8029HIGH 8.1EPSS p20.8%

CVE-2025-8029CVE-2025-8029

Description

Thunderbird executed `javascript:` URLs when used in `object` and `embed` tags. This vulnerability was fixed in Firefox 141, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.

Scoring

CVSS 3.18.1 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS0.29% probability of exploitation · percentile 20.8% · 2026-06-19T12:03:05Z
Published2025-07-22
Last modified2026-04-13

Underlying weaknesses· 1

CWE-80

References

  1. https://bugzilla.mozilla.org/show_bug.cgi?id=1928021
  2. https://www.mozilla.org/security/advisories/mfsa2025-56/
  3. https://www.mozilla.org/security/advisories/mfsa2025-58/
  4. https://www.mozilla.org/security/advisories/mfsa2025-59/
  5. https://www.mozilla.org/security/advisories/mfsa2025-61/
  6. https://www.mozilla.org/security/advisories/mfsa2025-62/
  7. https://www.mozilla.org/security/advisories/mfsa2025-63/
  8. https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)cwe-800%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.