Insecure Direct Object Reference in Herowatch Go Server

Herowatch Go Server developed by About Time Technologies has a Insecure Direct Object Reference vulnerability. Authenticated remote attackers can modify specific parameters to access or operate other users' data and functions.

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

Herowatch Go Server contains an Insecure Direct Object Reference (IDOR) vulnerability that allows authenticated attackers to bypass authorization controls by manipulating parameters to access or modify other users' data and functions. This vulnerability is particularly dangerous because it requires only valid authentication—not elevated privileges—making it accessible to any legitimate user of the platform. Organizations deploying About Time Technologies' Herowatch Go Server are at risk, especially those handling sensitive data through the application. The CVSS 7.5 score reflects the high severity, as attackers can potentially access confidential information, modify records, or perform unauthorized actions affecting multiple users.

Casky's 283 mapped security skills leverage Claude AI's extended reasoning to detect the attack patterns associated with IDOR exploitation, specifically aligning with MITRE ATT&CK techniques TA0004 (Privilege Escalation) and TA0006 (Credential Access). Practitioners using Casky would identify suspicious findings including: parameter manipulation patterns where user IDs or object identifiers are modified in requests, access logs showing authenticated users accessing resources outside their permission scope, and behavioral anomalies indicating horizontal privilege escalation attempts. Claude's reasoning engine correlates these indicators across multiple data points—request sequences, timing patterns, and data access anomalies—to surface IDOR exploitation attempts that traditional signature-based detection might miss, enabling security teams to detect both active exploitation and reconnaissance activities targeting this vulnerability class.

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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-2026-121817.

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-2026-121817

Casky has 283 skills that investigate the attack patterns behind CVE-2026-121817. Run one and get CVSS-scored findings in 3 minutes.

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