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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction Active

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation poc

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Steipete
  • Summarize

Configuration 1 [-]

cpe:2.3:a:steipete:summarize:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://github.com/steipete/summarize/commit/ecbb2c414255aa480a15d0d8b205224c14cfdbcb cve-icon cve-icon
https://github.com/steipete/summarize/pull/218 cve-icon cve-icon cve-icon
https://github.com/steipete/summarize/releases/tag/v0.15.2 cve-icon cve-icon
https://www.vulncheck.com/advisories/summarize-unauthorized-daemon-request-via-untrusted-events cve-icon cve-icon
History

Tue, 19 May 2026 01:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:steipete:summarize:*:*:*:*:*:*:*:*

Mon, 18 May 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 18 May 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Steipete
Steipete summarize
Vendors & Products Steipete
Steipete summarize

Mon, 18 May 2026 19:30:00 +0000

Type Values Removed Values Added
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.
Title Summarize < 0.15.1 Unauthorized Daemon Request via Untrusted Events
Weaknesses CWE-918
CWE-940
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N'}

cvssV4_0

{'score': 4.6, 'vector': '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-05-18T19:00:54.115Z

Updated: 2026-05-18T20:31:54.413Z

Reserved: 2026-05-11T14:14:49.613Z

Link: CVE-2026-45245

cve-icon Vulnrichment

Updated: 2026-05-18T20:29:40.298Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-18T20:16:38.593

Modified: 2026-05-19T01:34:04.253

Link: CVE-2026-45245

cve-icon Redhat

No data.