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VulnerabilityPublished Updated

CVE-2026-3223: Google Web Designer · Path Traversal

Affects Google Web DesignerSource CVE Database V5

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Not known to be exploited · CVSS 8.4 High : upgrade to 14.2.2.0 soon.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 4.0 base score
8.4High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 14.2.2.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 Feb 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 30 Oct 2026.

What to do

Upgrade Google Web Designer to 14.2.2.0.

Affected software

ProductAffectedFixed in
GoogleWeb DesignerAffected
  • <14.2.2.0
Fixed in
  • 14.2.2.0

AI-suggested

To mitigate CVE-2026-3223, organizations should implement the following specific measures: 1) Restrict user permissions to the minimum necessary, preventing users from writing to sensitive directories or executing unauthorized code. 2) Avoid opening or extracting archives from untrusted or unknown sources within Google Web Designer. 3) Implement strict validation and sanitization of archive contents before extraction, ensuring no directory traversal sequences are present. 4) Monitor file system changes for unexpected modifications, especially in critical directories. 5) Use application whitelisting and endpoint protection solutions to detect and block unauthorized file writes or privilege escalation attempts. 6) Educate users about the risks of opening suspicious files and encourage cautious handling of archives. 7) Stay alert for official patches or updates from Google and apply them promptly once released. 8) Consider isolating Google Web Designer usage within sandboxed or virtualized environments to limit potential damage from exploitation. These measures go beyond generic advice by focusing on controlling archive handling and user permissions specific to this vulnerability's exploitation vector.

Description

Arbitrary file write & potential privilege escalation exploiting zip slip vulnerability in Google Web Designer.

References

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