CVE-2026-117891

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.18% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 8.2% of scored records. A rank, not a probability.

NVD base score

The NVD has published no score for this record

NVD CVSS vector

No NVD score to derive

NVD analysis status

Deferred. NVD last modified this record on 2026-10-27.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-10-27 14:05Z2 DAYS AGO

Last updated

2026-10-27 18:28Z1 DAY AGO

Reserved

2026-10-27

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

No CWE assigned

Data version

5.2

Document digest

23c85e12f9f08f496f927c3f112f849097d8f391d82fce4d463f340f690b7e58

• bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=2078837
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-118/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-119/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-120/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-121/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-122/