CVE-2026-45245
Summarize < 0.15.1 Unauthorized Daemon Request via Untrusted Events
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.
INFO
Published Date :
May 18, 2026, 8:16 p.m.
Last Modified :
May 19, 2026, 1:34 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update the extension to version 0.15.1 or later.
- Verify that mouseover events are properly validated.
- Implement stricter checks for authenticated requests.
- Review daemon request handling for untrusted events.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-45245.
| URL | Resource |
|---|---|
| https://github.com/steipete/summarize/commit/ecbb2c414255aa480a15d0d8b205224c14cfdbcb | Patch |
| https://github.com/steipete/summarize/pull/218 | Exploit Issue Tracking Patch |
| https://github.com/steipete/summarize/releases/tag/v0.15.2 | Release Notes |
| https://www.vulncheck.com/advisories/summarize-unauthorized-daemon-request-via-untrusted-events | Third Party Advisory |
| https://github.com/steipete/summarize/pull/218 | Exploit Issue Tracking Patch |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45245 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-45245
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-45245 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-45245 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 19, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:steipete:summarize:*:*:*:*:*:*:*:* versions up to (excluding) 0.15.1 Added Reference Type VulnCheck: https://github.com/steipete/summarize/commit/ecbb2c414255aa480a15d0d8b205224c14cfdbcb Types: Patch Added Reference Type CISA-ADP: https://github.com/steipete/summarize/pull/218 Types: Exploit, Issue Tracking, Patch Added Reference Type VulnCheck: https://github.com/steipete/summarize/pull/218 Types: Exploit, Issue Tracking, Patch Added Reference Type VulnCheck: https://github.com/steipete/summarize/releases/tag/v0.15.2 Types: Release Notes Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/summarize-unauthorized-daemon-request-via-untrusted-events Types: Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 18, 2026
Action Type Old Value New Value Added Reference https://github.com/steipete/summarize/pull/218 -
New CVE Received by [email protected]
May. 18, 2026
Action Type Old Value New Value 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. Added CVSS V4.0 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 Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N Added CWE CWE-918 Added CWE CWE-940 Added Reference https://github.com/steipete/summarize/commit/ecbb2c414255aa480a15d0d8b205224c14cfdbcb Added Reference https://github.com/steipete/summarize/pull/218 Added Reference https://github.com/steipete/summarize/releases/tag/v0.15.2 Added Reference https://www.vulncheck.com/advisories/summarize-unauthorized-daemon-request-via-untrusted-events