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CVE-2026-33975

Twenty is an open source CRM built with NestJS (Node.js). In versions 1.18.0 and earlier, the SSRF protection in twenty-server's SecureHttpClientService can be bypassed using IPv4-mapped IPv6 addresses in URL IP literals. Node.js's URL parser normalizes IPv4-mapped IPv6 addresses to compressed hex form (e.g., ::ffff:169.254.169.254 becomes ::ffff:a9fe:a9fe), but the isPrivateIp utility only recognizes the dotted-decimal notation. As a result, the hex form passes the SSRF check unchecked. Additio
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ec4a35d5ef52a7a49692945ac30dc6886bfbcc1f34bf3346688e7978449111a2
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"twenty","vendor":"twentyhq","versions":[{"status":"affected","version":"<= 1.18.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b96c37dc405eae67d5af0968aadb5df325f51a7bb5e4d3963a968e54532274e1 · sha256:ee0378073e477d68… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.3,"baseSeverity":"HIGH","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b96c37dc405eae67d5af0968aadb5df325f51a7bb5e4d3963a968e54532274e1 · sha256:ee0378073e477d68… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b96c37dc405eae67d5af0968aadb5df325f51a7bb5e4d3963a968e54532274e1 · sha256:ee0378073e477d68… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/twentyhq/twenty/security/advisories/GHSA-vrcj-hv2q-c58m"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b96c37dc405eae67d5af0968aadb5df325f51a7bb5e4d3963a968e54532274e1 · sha256:ee0378073e477d68… · /containers/adp/0/references/0
{"name":"https://github.com/twentyhq/twenty/security/advisories/GHSA-vrcj-hv2q-c58m","tags":["x_refsource_CONFIRM"],"url":"https://github.com/twentyhq/twenty/security/advisories/GHSA-vrcj-hv2q-c58m"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b96c37dc405eae67d5af0968aadb5df325f51a7bb5e4d3963a968e54532274e1 · sha256:ee0378073e477d68… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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