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Medium 4.3Published Jan 13, 2026
CVE-2026-0887Clickjacking issue, information disclosure in the PDF Viewer component.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Clickjacking issue, information disclosure in the PDF Viewer component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
- CVSS
- 4.3 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
- Weakness (CWE)
- CWE-497
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
mozilla firefox mozilla:firefox | before 140.7.0; before 147.0 | NVD |
mozilla thunderbird mozilla:thunderbird | before 140.7.0; before 147.0 | NVD |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2006500permissions-required
- https://www.mozilla.org/security/advisories/mfsa2026-01/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2026-03/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2026-04/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2026-05/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.