CVE-2026-75856: Server-Side Request Forgery (SSRF) in Hmbown CodeWhale
CodeWhale before 0.8.64 contains a server-side request forgery bypass vulnerability in DNS pinning logic that fails to prevent time-of-check-time-of-use attacks. Attackers can manipulate DNS responses to fail initial resolution checks and succeed on secondary requests, allowing requests to internal IP addresses and bypassing SSRF mitigations.
AI Analysis
Technical Summary
CVE-2026-75856 is a server-side request forgery (SSRF) vulnerability in Hmbown's CodeWhale product prior to version 0.8.64. The issue arises from a bypass in the DNS pinning logic that fails to prevent time-of-check-time-of-use (TOCTOU) attacks. Attackers can manipulate DNS responses so that initial resolution checks fail, but secondary requests succeed, allowing them to send requests to internal IP addresses and bypass SSRF protections.
Potential Impact
Successful exploitation of this vulnerability allows an unauthenticated attacker to bypass SSRF mitigations and send unauthorized requests to internal network resources. This can lead to unauthorized access to internal services that are otherwise protected from external access. The vulnerability is rated critical with a CVSS 4.0 score of 9.2, indicating high impact and ease of exploitation without privileges or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround is currently documented. Until a patch is available, users should consider additional network-level protections to mitigate SSRF risks.
CVE-2026-75856: Server-Side Request Forgery (SSRF) in Hmbown CodeWhale
Description
CodeWhale before 0.8.64 contains a server-side request forgery bypass vulnerability in DNS pinning logic that fails to prevent time-of-check-time-of-use attacks. Attackers can manipulate DNS responses to fail initial resolution checks and succeed on secondary requests, allowing requests to internal IP addresses and bypassing SSRF mitigations.
CVSS v4.0
Score 9.2critical
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-75856 is a server-side request forgery (SSRF) vulnerability in Hmbown's CodeWhale product prior to version 0.8.64. The issue arises from a bypass in the DNS pinning logic that fails to prevent time-of-check-time-of-use (TOCTOU) attacks. Attackers can manipulate DNS responses so that initial resolution checks fail, but secondary requests succeed, allowing them to send requests to internal IP addresses and bypass SSRF protections.
Potential Impact
Successful exploitation of this vulnerability allows an unauthenticated attacker to bypass SSRF mitigations and send unauthorized requests to internal network resources. This can lead to unauthorized access to internal services that are otherwise protected from external access. The vulnerability is rated critical with a CVSS 4.0 score of 9.2, indicating high impact and ease of exploitation without privileges or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround is currently documented. Until a patch is available, users should consider additional network-level protections to mitigate SSRF risks.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-18T11:03:08.682Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a847b9ec6e8be03326654bf
Added to database: 08/18/2026, 15:34:54 UTC
Last enriched: 08/18/2026, 15:51:19 UTC
Last updated: 08/19/2026, 00:28:19 UTC
Views: 7
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