CVE-2026-52203
Published Jul 17, 2026
Description
An issue in MCMS v.6.1.1 allows a remote attacker to obtain sensitive information via the source parameter.
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EPSS — Exploit Prediction
0.0017
Probability of exploitation
0.06%
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.
References
Other References
Frequently Asked Questions
What is CVE-2026-52203? +
An issue in MCMS v.6.1.1 allows a remote attacker to obtain sensitive information via the source parameter.
How do I check if I'm vulnerable to CVE-2026-52203? +
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.