CVE-2026-45244: summarize Auth Bypass

Description

Summarize prior to 0.15.1 contains a missing authorization vulnerability that allows attackers to execute browser automation actions without per-call user approval when the extension automation feature is enabled. Attackers can influence the agent through malicious page or summary content to invoke enabled extension automation tools such as navigation or debugger-backed actions, bypassing the final user approval step when a user interacts with attacker-controlled content.

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CVSS v3.1 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

EPSS — Exploit Prediction

0.0023

Probability of exploitation

0.13%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-862 Missing Authorization

Affected Products

Vendor	Product	Versions
steipete	summarize	< 0.15.1

References

Advisories & Patches

https://github.com/steipete/summarize/commit/e64fe3ecd1bb4fdc181dcfa88c96b9e1914ced0e https://github.com/steipete/summarize/pull/219

Exploits

https://github.com/steipete/summarize/pull/219

Other References

https://github.com/steipete/summarize/releases/tag/v0.15.2 https://www.vulncheck.com/advisories/summarize-unapproved-browser-automation-execution

Frequently Asked Questions

What is CVE-2026-45244? +

Summarize prior to 0.15.1 contains a missing authorization vulnerability that allows attackers to execute browser automation actions without per-call user approval when the extension automation feature is enabled. Attackers can influence the agent through malicious page or summary content to invoke enabled extension automation tools such as navigation or debugger-backed actions, bypassing the final user approval step when a user interacts with attacker-controlled content. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2026-45244? +

CVE-2026-45244 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0023, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-45244? +

CVE-2026-45244 affects products from steipete, specifically: summarize. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-45244? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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