Unauthenticated Agent Control-Plane Exposes TLS Encryption Keys

keploy versions 3.1.0 through 3.6.25 bind the agent control-plane HTTP server to all interfaces without authentication, exposing endpoints that stream TLS session keys and traffic data. Attackers can access the /agent/pcap/keylog endpoint to retrieve NSS keylog lines and decrypt recorded TLS traffic, or invoke /agent/stop and /agent/storemocks to manipulate recording sessions.

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

Keploy versions 3.1.0 through 3.6.25 contain a critical authentication bypass vulnerability where the agent control-plane HTTP server binds to all network interfaces without requiring credentials. This exposes sensitive endpoints that stream TLS session keys and traffic data to any attacker with network access. The /agent/pcap/keylog endpoint specifically leaks NSS keylog material, enabling attackers to decrypt recorded TLS sessions and inspect encrypted communications. Additionally, endpoints like /agent/stop and /agent/storemocks allow manipulation of recording operations, disrupting system integrity. Organizations running affected Keploy versions face immediate risk of credential compromise, session hijacking, and loss of confidentiality for recorded network traffic—particularly critical in environments where Keploy monitors sensitive application interactions.

Casky's skill mapping identifies this vulnerability through two key MITRE ATT&CK techniques: TA0004 (Privilege Escalation) and TA0006 (Credential Access). Practitioners using Casky would observe detection patterns centered on unauthenticated access to privileged endpoints (credential dumping behavior) and abuse of exposed management interfaces. With 283 mapped skills spanning reconnaissance, lateral movement detection, and credential harvesting, Claude AI's extended reasoning engine would flag anomalies such as unexpected HTTP requests to /agent/pcap/keylog, unusual process manipulation via /agent/stop endpoints, and network binding configurations exposing administrative functions. Security teams would receive findings highlighting the authentication gap (CWE-306: Missing Authentication), network exposure patterns, and the specific risk of TLS key exfiltration—enabling rapid remediation through version upgrades and network segmentation of control-plane interfaces.

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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-2026-82641.

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-2026-82641

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