VULNERABILITY INTELLIGENCE
CVE-2018-16477
CVSS score6.5 MEDIUM
EPSS probability1.31%
CISA KEVNot currently listed
Published2018-11-30
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Description
A bypass vulnerability in Active Storage >= 5.2.0 for Google Cloud Storage and Disk services allow an attacker to modify the `content-disposition` and `content-type` parameters which can be used in with HTML files and have them executed inline. Additionally, if combined with other techniques such as cookie bombing and specially crafted AppCache manifests, an attacker can gain access to private signed URLs within a specific storage path. This vulnerability has been fixed in version 5.2.1.1.
Weakness classification
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Primary references
- support@hackerone.com — Exploit, Mailing List, Mitigation, Third Party Advisory
- support@hackerone.com — Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Mailing List, Mitigation, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory