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VulnerabilityPublished

CVE-2026-117933: Frame Poisoning

Source GCVE Database

0
Authoritative record:CVE-2026-117933· High

Not known to be exploited.

Data as of 27 Oct 2026, 17:28 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

AI-suggested

A fix for this vulnerability is available and has been incorporated in Firefox 159 and Firefox ESR 153.6. Users and administrators should update affected Firefox installations to these versions or later to remediate the issue.

Description

CVE-2026-117933 is a frame poisoning vulnerability in the CSS Parsing and Computation component of Firefox. This security flaw was addressed and fixed in Firefox version 159 and Firefox ESR 153.6. The vulnerability is rated with high impact by the vendor.

References

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