CVE-2026-77151: Weak Crypto (CVSS 3.7)

Description

A security flaw has been discovered in lin-snow Ech0 up to 5.4.1. Affected by this issue is the function MD5Encrypt of the file internal/util/crypto/crypto.go. Performing a manipulation results in risky cryptographic algorithm. Remote exploitation of the attack is possible. The complexity of an attack is rather high. The exploitation is known to be difficult. Upgrading to version 5.4.2 can resolve this issue. The patch is named 9ce19a3b0d0765086a655f45d3a706ec1810404f. It is recommended to upgrade the affected component.

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CVSS v3.1 Score

3.7

LOW

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

EPSS — Exploit Prediction

0.0030

Probability of exploitation

0.22%

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-310 CWE-310

CWE-327 CWE-327

References

Other References

https://github.com/lin-snow/Ech0/ https://github.com/lin-snow/Ech0/commit/9ce19a3b0d0765086a655f45d3a706ec1810404f https://github.com/lin-snow/Ech0/issues/314 https://github.com/lin-snow/Ech0/pull/315 https://github.com/lin-snow/Ech0/releases/tag/ech0-5.4.2 https://vuldb.com/cve/CVE-2026-77151 https://vuldb.com/submit/881015 https://vuldb.com/vuln/393736 https://vuldb.com/vuln/393736/cti

Frequently Asked Questions

What is CVE-2026-77151? +

A security flaw has been discovered in lin-snow Ech0 up to 5.4.1. Affected by this issue is the function MD5Encrypt of the file internal/util/crypto/crypto.go. Performing a manipulation results in risky cryptographic algorithm. Remote exploitation of the attack is possible. The complexity of an attack is rather high. The exploitation is known to be difficult. Upgrading to version 5.4.2 can resolve this issue. The patch is named 9ce19a3b0d0765086a655f45d3a706ec1810404f. It is recommended to upgrade the affected component. It has a CVSS v3.1 base score of 3.7 (LOW).

How severe is CVE-2026-77151? +

CVE-2026-77151 has a CVSS v3.1 score of 3.7 out of 10, rated LOW. This is a low-severity vulnerability with limited impact. The EPSS score is 0.0030, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-77151? +

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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CVE-2026-77151