Authorization Bypass via User-Controlled Identifiers in PAVO Pay

Authorization bypass through User-Controlled key vulnerability in PAVO Financial Technology Solutions Inc. PAVO Pay allows Exploitation of Trusted Identifiers. This issue affects PAVO Pay: through 09072026. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

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

CVE-2026-1989 represents a critical authorization bypass vulnerability in PAVO Pay financial software that allows attackers to exploit trusted identifiers through user-controlled key manipulation. This vulnerability affects all versions through September 7, 2026, and poses significant risk to financial institutions and their customers who rely on PAVO Pay for transaction processing. The authorization flaw enables attackers to escalate privileges or access resources they shouldn't have permission to reach by manipulating how the system validates user identity, directly threatening the confidentiality and integrity of financial data.

Casky.ai's 283 mapped security skills detect the attack patterns underlying this vulnerability by correlating MITRE ATT&CK techniques TA0004 (Privilege Escalation) and TA0006 (Credential Access). When practitioners run threat detection with Claude's extended reasoning capabilities, they would observe findings indicating: (1) suspicious modifications to authentication tokens or session identifiers, (2) API calls with manipulated user context parameters that bypass normal permission checks, (3) lateral movement patterns where authenticated sessions access resources outside their assigned scope, and (4) privilege escalation attempts leveraging predictable or user-influenced identifier patterns. The skills framework helps teams recognize that this isn't random account compromise—it's systematic exploitation of how the application trusts user-supplied identity information in authorization decisions.

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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-2026-1989.

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-2026-1989

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