CVE-2026-15321: XSS (CVSS 2.4)

Description

A vulnerability was found in MyEMS up to 6.4.0. The affected element is the function on_post of the file myems-api/core/svg.py of the component Admin Backend. The manipulation of the argument new_values['data'] results in cross site scripting. The attack can be launched remotely. The exploit has been made public and could be used. Upgrading to version 6.5.0 is sufficient to fix this issue. The patch is identified as 4a97edfbd786c779d0322054833b21ddf54d5b06. It is suggested to upgrade the affected component. The issue report remains open even though there is an official fix for it.

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CVSS v3.1 Score

2.4

LOW

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

EPSS — Exploit Prediction

0.0022

Probability of exploitation

0.13%

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)

CWE-94 CWE-94

References

Other References

https://github.com/MyEMS/myems/ https://github.com/MyEMS/myems/commit/4a97edfbd786c779d0322054833b21ddf54d5b06 https://github.com/MyEMS/myems/issues/412 https://github.com/MyEMS/myems/releases/tag/v6.5.0 https://vuldb.com/cve/CVE-2026-15321 https://vuldb.com/submit/853060 https://vuldb.com/vuln/377263 https://vuldb.com/vuln/377263/cti https://vuldb.com/submit/853060

Frequently Asked Questions

What is CVE-2026-15321? +

A vulnerability was found in MyEMS up to 6.4.0. The affected element is the function on_post of the file myems-api/core/svg.py of the component Admin Backend. The manipulation of the argument new_values['data'] results in cross site scripting. The attack can be launched remotely. The exploit has been made public and could be used. Upgrading to version 6.5.0 is sufficient to fix this issue. The patch is identified as 4a97edfbd786c779d0322054833b21ddf54d5b06. It is suggested to upgrade the affected component. The issue report remains open even though there is an official fix for it. It has a CVSS v3.1 base score of 2.4 (LOW).

How severe is CVE-2026-15321? +

CVE-2026-15321 has a CVSS v3.1 score of 2.4 out of 10, rated LOW. This is a low-severity vulnerability with limited impact. The EPSS score is 0.0022, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-15321? +

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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