VulnerabilityPublished 27 Oct 2026

CVE-2026-118013: Use-after-free in the Layout · Images, Video, and HTML Frames component

Source GCVE Database

Authoritative record:CVE-2026-118013· High

Not known to be exploited.

Data as of 27 Oct 2026, 16:44 UTC

Severity

High

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

Exploitation evidence

Disclosed: evidence found.
CVE published 27 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-f532-6vwv-5jpv

What to do

AI-suggested

Users should update Firefox to version 159 or later to remediate this vulnerability. The vendor advisory confirms that the issue is fixed in Firefox 159. No additional mitigation steps are required beyond applying the official update.

Description

CVE-2026-118013 is a use-after-free vulnerability in the Layout: Images, Video, and HTML Frames component of Firefox. This flaw was addressed and fixed in Firefox version 159. The vulnerability is classified with high impact due to potential memory safety issues. No active exploitation in the wild has been reported. Users of affected Firefox versions should upgrade to version 159 or later to remediate this issue.

Impact

The vulnerability poses a high impact risk due to the nature of use-after-free bugs, which can lead to memory corruption and potentially allow attackers to execute arbitrary code or cause denial of service. However, there are no reports of exploitation in the wild for this specific flaw. The fix in Firefox 159 mitigates this risk.

Summary

This vulnerability involves a use-after-free condition in the Layout: Images, Video, and HTML Frames component of Firefox. Use-after-free vulnerabilities occur when a program continues to use a pointer after the memory it points to has been freed, potentially leading to memory corruption or arbitrary code execution. Mozilla fixed this issue in Firefox 159 as part of a broader security update addressing multiple high-impact vulnerabilities. The advisory confirms the fix and classifies the impact as high.

References

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