CVE-2026-38473: XSS (CVSS 5.4)

Description

A Stored XSS vulnerability in the subtitle deletion flow in GazellePW (GazellePosterWall) commit 86c4bedf727691b5a97af42a4864869d18446449 allows remote authenticated users to inject arbitrary JavaScript via a crafted subtitle filename, which is stored during upload and later rendered in /subtitles.php?action=delete.

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CVSS v3.1 Score

5.4

MEDIUM

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

EPSS — Exploit Prediction

0.0034

Probability of exploitation

0.27%

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-79 Cross-site Scripting (XSS)

References

Other References

https://github.com/Mosasauroidea/GazellePW/blob/86c4bedf727691b5a97af42a4864869d18446449/sections/subtitles/delete.php#L25 https://github.com/Mosasauroidea/GazellePW/blob/86c4bedf727691b5a97af42a4864869d18446449/sections/subtitles/upload_handle.php#L12 https://github.com/Mosasauroidea/GazellePW/blob/86c4bedf727691b5a97af42a4864869d18446449/sections/subtitles/upload_handle.php#L37 https://snaacky.com/1-click-exploit-chain-for-complete-gazellepw-database-compromise

Frequently Asked Questions

What is CVE-2026-38473? +

A Stored XSS vulnerability in the subtitle deletion flow in GazellePW (GazellePosterWall) commit 86c4bedf727691b5a97af42a4864869d18446449 allows remote authenticated users to inject arbitrary JavaScript via a crafted subtitle filename, which is stored during upload and later rendered in /subtitles.php?action=delete. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2026-38473? +

CVE-2026-38473 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 0.0034, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-38473? +

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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