VulnerabilityPublished 27 Oct 2026

CVE-2026-117992: Information Disclosure

Source GCVE Database

Authoritative record:CVE-2026-117992· High

Not known to be exploited.

Data as of 27 Oct 2026, 16:58 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-5x3w-x79c-xmm9

What to do

AI-suggested

Users and administrators should update affected Firefox versions to Firefox 159 or later, or Firefox ESR 115.44 or 153.6 or later, where this vulnerability has been fixed. No additional mitigation steps are indicated by the vendor advisory.

Description

CVE-2026-117992 is an information disclosure vulnerability in the CSS Parsing and Computation component of Firefox. This flaw could potentially expose sensitive information. The issue was addressed and fixed in Firefox 159, Firefox ESR 115.44, and Firefox ESR 153.6.

Impact

The vulnerability allows information disclosure, which could lead to exposure of sensitive data processed by the CSS Parsing and Computation component. The vendor rates the impact as high, indicating a significant risk if exploited.

Summary

This vulnerability involves information disclosure within the CSS Parsing and Computation component of Firefox. The flaw was resolved by Mozilla in Firefox version 159 and corresponding ESR releases 115.44 and 153.6. The vendor advisory categorizes the impact as high but does not provide further technical details or exploitation methods. No known exploits in the wild have been reported.

References

Community reviews

Loading reviews…