EUVD-2026-42551
GHSA-3mfh-f79j-gpv8
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Network-accessible via authenticated low-privilege account; sensitive data exposure in transit yields high confidentiality impact with no integrity or availability effects.
Primary rating from Vendor (TR-CERT).
CVSS VectorVendor: TR-CERT
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
1DescriptionCVE.org
Insertion of sensitive information into sent data vulnerability in Sayax Energy Technologies Inc. OSOS allows Authentication Bypass.
This issue affects OSOS: through 09072026. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
AnalysisAI
Sensitive authentication data is inserted into network-transmitted responses in OSOS, the energy management platform by Sayax Energy Technologies Inc., enabling authenticated low-privilege users to extract credentials or session tokens and bypass authentication controls. All versions through build 09072026 are affected with no vendor patch available - TR-CERT disclosed this vulnerability but received no response from the vendor. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires possession of a valid low-privilege OSOS account, as confirmed by PR:L in the CVSS vector - unauthenticated remote attackers cannot trigger this vulnerability directly. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N) scores 6.5 (Medium), reflecting network-reachable exploitation with low complexity and no user interaction, but constrained by the requirement for a low-privilege authenticated account (PR:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with a valid low-privilege OSOS account makes authenticated requests to the platform and observes server responses or inter-service traffic, recovering embedded session tokens or credentials belonging to higher-privileged accounts. Using those extracted credentials, the attacker authenticates as an administrator or privileged operator, gaining access to restricted energy management functions or configuration interfaces beyond their authorized scope. |
| Remediation | No vendor-released patch has been identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same technique Authentication Bypass
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External POC / Exploit Code
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