VulnerabilityPublished 27 Oct 2026

CVE-2026-118000: Information Disclosure

Source GCVE Database

Authoritative record:CVE-2026-118000· High

Not known to be exploited.

Data as of 27 Oct 2026, 16:57 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-6pw5-rf7x-3hxw

What to do

AI-suggested

An official fix is available and included in Firefox 159 and Firefox ESR 153.6. Users and administrators should update to these versions or later to remediate this vulnerability. No additional mitigation actions are required beyond applying the update.

Description

CVE-2026-118000 is an information disclosure vulnerability in the Networking: HTTP component of Firefox. This flaw was addressed and fixed in Firefox version 159 and Firefox ESR 153.6. The vulnerability could potentially allow unauthorized access to sensitive information through the HTTP networking stack. The vendor has assigned a high impact to this issue and has released an official fix.

Impact

The vulnerability allows information disclosure via the HTTP networking component, which could expose sensitive data to unauthorized parties. Mozilla rates the impact as high, reflecting the seriousness of the potential data exposure. There are no reports of exploitation in the wild at this time.

Summary

This vulnerability involves information disclosure within the Networking: HTTP component of Firefox. It was identified and resolved by Mozilla in Firefox 159 and Firefox ESR 153.6. The Mozilla advisory categorizes the impact as high, indicating that the flaw could lead to significant exposure of sensitive data. The fix is included in the stated Firefox releases, and no active exploitation in the wild has been reported.

References

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