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CVE-2026-17878VulnerabilityPublished

CSS · Inappropriate Implementation

Source GCVE Database

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Authoritative record:CVE-2026-17878· Medium 6.1

Not known to be exploited · CVSS 6.1 Medium : upgrade to 151.0.7922.72 when convenient.

Data as of 29 Oct 2026, 07:15 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 151.0.7922.72
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: 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 29 Oct 2026.

What to do

Upgrade Chrome to 151.0.7922.72.

Affected software

ProductAffectedFixed in
GoogleChromeAffected
  • >=151.0.7922.72 <151.0.7922.72
Fixed in
  • 151.0.7922.72

AI-suggested

Users should update Google Chrome to version 151.0.7922.72 or later to remediate this vulnerability. Since this is a client-side browser vulnerability, applying the official update is the recommended and effective mitigation. No additional vendor advisories or temporary workarounds are provided.

Description

Inappropriate implementation in CSS in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity: Medium)

References

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