Description
Summarize prior to 0.15.1 contains a vulnerability in the hover summary feature that allows malicious pages to dispatch synthetic mouseover events over attacker-controlled links, causing the extension to make authenticated daemon requests using stored tokens without verifying event trustworthiness. Attackers can place local or private-network URLs behind hoverable links to route authenticated requests through the daemon, potentially accessing sensitive internal endpoints when users interact with attacker-controlled content.
Affected products
steipete: summarize
References5
- github.com/steipete/summarize/commit/ecbb2c414255aa480a15d0d8b2… Patch
- github.com/steipete/summarize/pull/218 ExploitIssue TrackingPatch
- github.com/steipete/summarize/pull/218 ExploitIssue TrackingPatch
- github.com/steipete/summarize/releases/tag/v0.15.2 Release Notes
- www.vulncheck.com/advisories/summarize-unauthorized-daemon-requ… Third Party Advisory
Metrics
- CVSS 3.1
-
7.4
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N - CVSS 4.0
-
4.6
MEDIUM
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 27 · as of 14 November 2026
- CWE
- CWE-918CWE-940
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.