Alaev SEO Tools Extension up to 1.0.10 on Chrome Popup UI src/popup.html addDiv cross site scripting

Summaryinfo

A vulnerability was found in Alaev SEO Tools Extension up to 1.0.10 on Chrome and classified as problematic. Affected is the function addDiv of the file src/popup.html of the component Popup UI. Executing a manipulation can lead to cross site scripting. This vulnerability is tracked as CVE-2026-19988. The attack can be launched remotely. Moreover, an exploit is present. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in Alaev SEO Tools Extension up to 1.0.10 on Chrome. It has been declared as problematic. This vulnerability affects the function addDiv of the file src/popup.html of the component Popup UI. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-80. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. As an impact it is known to affect integrity.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-19988. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1059.007.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way. By approaching the search of inurl:src/popup.html it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-60051). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Alaev

Name

• SEO Tools Extension

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6
• 1.0.7
• 1.0.8
• 1.0.9
• 1.0.10

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Submitinfo

Accepted

• Submit #873939: Alaev & Co Alaev SEO Tools: Free Audit & Analysis 1.0.10 Cross Site Scripting (by DRXYJ)

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion