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Vulnerability · Published Aug 17, 2026 · Assigned by VulDB

CVE-2026-19988Alaev SEO Tools Extension Popup UI popup.html addDiv cross site scripting

Medium 4.3

In plain English

A medium-severity injection in SEO Tools Extension from Alaev. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.4%top 60.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

A vulnerability was detected in Alaev SEO Tools Extension up to 1.0.10 on Chrome. This impacts the function addDiv of the file src/popup.html of the component Popup UI. Performing a manipulation results in basic cross site scripting. The attack can be initiated remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

VendorProductVersions
Alaev SEO Tools Extension 1.0.01.0.11.0.21.0.31.0.41.0.51.0.61.0.7

Weakness: CWE-80, CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

References