Authentication Bypass in Password Change Endpoint

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.

Casky was already ahead

This CVE exploits attack patterns that Casky's 283matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

Capgo before version 12.128.2 contains a critical authentication bypass vulnerability in its password change functionality. The flaw allows attackers who have gained temporary session access to modify user passwords without verifying the current password—a standard security control that prevents unauthorized account modifications. This vulnerability is particularly dangerous because it enables attackers to escalate temporary compromises into permanent account takeovers by locking out legitimate users. Any organization using affected Capgo versions faces immediate risk to user account integrity, with potential impacts ranging from credential theft to complete account hijacking.

Capsy.ai's 283 mapped security skills leverage Claude AI's extended reasoning to detect the attack patterns underlying this vulnerability across MITRE ATT&CK's Privilege Escalation (TA0004) and Credential Access (TA0006) tactics. A practitioner using Casky would identify suspicious indicators such as password change requests lacking standard authentication challenges, session tokens being reused across password modification endpoints, or unusual patterns of failed login attempts following password changes—all telltale signs of this bypass in action. The platform's skills would correlate these behavioral anomalies with known Capgo authentication flows, enabling security teams to spot exploitation attempts, trace affected accounts, and implement immediate containment measures before attackers achieve persistent access through account lockout scenarios.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

283 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-56305.

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

Access with Stolen Session Cookie

identity access management · low

Run

MITRE ATT&CK Techniques

TA0004 TA0006

Investigate the attack patterns behind CVE-2026-56305

Casky has 283 skills that investigate the attack patterns behind CVE-2026-56305. Run one and get CVSS-scored findings in 3 minutes.

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