What is CVE-2026-75626?

CVE-2026-75626 is a critical-severity vulnerability in Smicallef Spiderfoot, classified under Cross-site Scripting. CVSS score: 9.3/10. Published 2026-08-18.

How severe is CVE-2026-75626?

Critical severity. CVSS v3 base score is 9.3 out of 10.

XSS in Smicallef Spiderfoot

CVE-2026-75626

SpiderFoot fails to HTML-escape correlation titles built from external scan data sources including server banners and metadata. Attackers can inject malicious HTML elements with event handlers into correlation results that execute scripts in the operator's browser when the correlations view is opened, potentially stealing API keys.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-08-18 · last modified 2026-09-24.

CVSS v3 metric

CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (23.9th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.001

Affected products

Smicallef Spiderfoot

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/smicallef/spiderfoot/issues/2012 (issue-tracking)
github.com/smicallef/spiderfoot (product)
github.com/smicallef/spiderfoot/blob/master/spiderfoot/correlation.py (technical-description)
www.vulncheck.com/advisories/spiderfoot-stored-cross-site-scripting-via-correla… (third-party-advisory)

Frequently asked questions

What is CVE-2026-75626?: CVE-2026-75626 is a critical-severity vulnerability in Smicallef Spiderfoot, classified under Cross-site Scripting. CVSS score: 9.3/10. Published 2026-08-18.
How severe is CVE-2026-75626?: Critical severity. CVSS v3 base score is 9.3 out of 10.