# CVE-2026-19988

## Summary

- **CVE ID:** CVE-2026-19988
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P)
- **CWE:** CWE-80, CWE-74
- **Published:** Aug 17, 2026
- **Last Modified:** Aug 18, 2026

## 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

- Alaev — SEO Tools Extension (1.0.0)
- Alaev — SEO Tools Extension (1.0.1)
- Alaev — SEO Tools Extension (1.0.2)
- Alaev — SEO Tools Extension (1.0.3)
- Alaev — SEO Tools Extension (1.0.4)
- Alaev — SEO Tools Extension (1.0.5)
- Alaev — SEO Tools Extension (1.0.6)
- Alaev — SEO Tools Extension (1.0.7)
- Alaev — SEO Tools Extension (1.0.8)
- Alaev — SEO Tools Extension (1.0.9)
- Alaev — SEO Tools Extension (1.0.10)

## References

- [CNA](https://vuldb.com/vuln/391192)
- [CNA](https://vuldb.com/vuln/391192/cti)
- [CNA](https://vuldb.com/cve/CVE-2026-19988)
- [CNA](https://vuldb.com/submit/873939)
- [CNA](https://github.com/xryj920/chrome_extensions/blob/main/Alaev%20%26%20Co%20Alaev%20SEO%20Tools%201.0.10%20allows%20extension%20popup%20UI%20injection%20through%20unsanitized%20page%20SEO%20fields)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.27%
- **EPSS Percentile:** 18.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._