CVE-2026-56305 (CVSS 8.3)

Description

Capgo before 12.128.2 contains an authentication bypass vulnerability in the password change endpoint that allows attackers to change user passwords without requiring current password confirmation. Attackers with temporary session access can exploit this flaw to permanently lock out legitimate users and achieve full account takeover.

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CVSS v3.1 Score

8.3

HIGH

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

EPSS — Exploit Prediction

0.0036

Probability of exploitation

0.28%

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-620 CWE-620

References

Other References

https://github.com/Cap-go/capgo/security/advisories/GHSA-rjr5-qxqj-cx8g https://www.vulncheck.com/advisories/capgo-authentication-bypass-in-password-change-via-missing-current-password-validation https://github.com/Cap-go/capgo/security/advisories/GHSA-rjr5-qxqj-cx8g

Frequently Asked Questions

What is CVE-2026-56305? +

Capgo before 12.128.2 contains an authentication bypass vulnerability in the password change endpoint that allows attackers to change user passwords without requiring current password confirmation. Attackers with temporary session access can exploit this flaw to permanently lock out legitimate users and achieve full account takeover. It has a CVSS v3.1 base score of 8.3 (HIGH).

How severe is CVE-2026-56305? +

CVE-2026-56305 has a CVSS v3.1 score of 8.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0036, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-56305? +

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-2026-56305