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NVD / CVE Program· CNA VulnCheck

CVE-2026-75856: CodeWhale before 0.8.64 SSRF Bypass via DNS Pinning TOCTOU

Noroxi assessment

Priority: Monitor (action score 36/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.49% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Hmbown CodeWhale 0.8.41, 0.8.64.

Low priority for now. Upgrade to Hmbown CodeWhale 0.8.41, 0.8.64 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

CriticalCVSS 9.2 · v4.0—No exploit Fix available
Published
Aug 18, 2026
Updated
Oct 22, 2026
EPSS
0.4% · 42th percentile

Report tools

JSON

Action score

36

Monitor

Low priority for now.

CVSS
36 / 40 · 9.2 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
proof of concept
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulnCheck
9.2
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-75856

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulnCheck). Independent of NVD's CPE analysis and usually ahead of it.

  • Hmbown CodeWhale

    • 0.8.41, 0.8.41, 0.8.64, 0.8.64not affected
    • 0.8.5 and later · before 0.8.41affected · semver
    • 0.8.5 and later · before 0.8.41affected · semver
    • 0.8.41 and later · before 0.8.64affected · semver
    • 0.8.41 and later · before 0.8.64affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
crates.iocodewhale-tuifrom 0.8.41 · before 0.8.640.8.64
crates.iodeepseek-tuifrom 0.8.5 · up to and including 0.8.41—
npmcodewhalefrom 0.8.41 · before 0.8.640.8.64
npmdeepseek-tuifrom 0.8.5 · before 0.8.410.8.41

Same product

hmbown: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-45374CodeWhale: task_create Insecure Defaults Enable RCE via Prompt Injection in Project Files
    38Monitor
  • CVE-2026-45311CodeWhale: run_tests Tool Enables RCE via Malicious Repository Without Approval
    38Monitor
  • CVE-2026-75915CodeWhale before 0.8.64 Environment Variable Leak via js_execution
    34Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-45310May 28, 2026 · CodeWhale: SSRF via HTTP Redirect Bypass in fetch_url Tool
    29Monitor
  • ← EarlierCVE-2026-45373May 28, 2026 · CodeWhale: SSRF‌ IPV6 bypass
    29Monitor
  • Later →CVE-2026-75857Aug 18, 2026 · CodeWhale before 0.8.64 Privilege Escalation via exec_shell_interact
    29Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Hmbown CodeWhale0.8.41Vendor (CNA)
Hmbown CodeWhale0.8.64Vendor (CNA)
crates.io:codewhale-tui0.8.64Package registry (OSV)
npm:codewhale0.8.64Package registry (OSV)
npm:deepseek-tui0.8.41Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-4531082 days apartCodeWhale: SSRF via HTTP Redirect Bypass in fetch_url Tool
    29Monitor
  • CVE-2026-4537382 days apartCodeWhale: SSRF‌ IPV6 bypass
    29Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
X

Weakness class (CWE)

CWE-918 · Server-Side Request Forgery (SSRF)

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records