VulnerabilityModified
CVE-2018-6654
The Grammarly extension before 2018-02-02 for Chrome allows remote attackers to discover authentication tokens via an 'action: "user"' request to iframe.gr_-ifr, because the exposure of these tokens is not restricted to any specific web site.
HIGH 8.8EPSS 0.51%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.51%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The Grammarly extension before 2018-02-02 for Chrome allows remote attackers to discover authentication tokens via an 'action: "user"' request to iframe.gr_-ifr, because the exposure of these tokens is not restricted to any specific web site.
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.51% probability · 42th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-346
- Affected
- grammarly/grammarly
- Source
- cve@mitre.org
References
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1527Exploit, Issue Tracking, Third Party Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1527Exploit, Issue Tracking, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.