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CVE-2026-33659

EspoCRM is an open source customer relationship management application. In versions 9.3.3 and below, the POST /api/v1/Attachment/fromImageUrl endpoint is vulnerable to Server-Side Request Forgery (SSRF) via a DNS rebinding (TOCTOU) condition. Host validation uses dns_get_record() but the actual HTTP request resolves hostnames through curl's internal resolver (gethostbyname()), allowing the two lookups to return different IP addresses for the same hostname. A secondary issue exists where an empty
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a600aa50c889612b5d03c1a3a800e0e06a561e09b30eb287768849a98ec7aa37
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:25f60fbf4ae89a888ecf9aac15084f9d81651856b6fbb980c269f53b1c0f71b0 · sha256:e9ab690710ddaf28… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:25f60fbf4ae89a888ecf9aac15084f9d81651856b6fbb980c269f53b1c0f71b0 · sha256:e9ab690710ddaf28… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"espocrm","vendor":"espocrm","versions":[{"status":"affected","version":"< 9.3.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:25f60fbf4ae89a888ecf9aac15084f9d81651856b6fbb980c269f53b1c0f71b0 · sha256:e9ab690710ddaf28… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.5,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:25f60fbf4ae89a888ecf9aac15084f9d81651856b6fbb980c269f53b1c0f71b0 · sha256:e9ab690710ddaf28… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:25f60fbf4ae89a888ecf9aac15084f9d81651856b6fbb980c269f53b1c0f71b0 · sha256:e9ab690710ddaf28… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:25f60fbf4ae89a888ecf9aac15084f9d81651856b6fbb980c269f53b1c0f71b0 · sha256:e9ab690710ddaf28… · /containers/cna/problemTypes/1/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/espocrm/espocrm/commit/dca03cc3458e487362c26c746378a2d4de9990b1","tags":["x_refsource_MISC"],"url":"https://github.com/espocrm/espocrm/commit/dca03cc3458e487362c26c746378a2d4de9990b1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:25f60fbf4ae89a888ecf9aac15084f9d81651856b6fbb980c269f53b1c0f71b0 · sha256:e9ab690710ddaf28… · /containers/cna/references/1
{"name":"https://github.com/espocrm/espocrm/releases/tag/9.3.4","tags":["x_refsource_MISC"],"url":"https://github.com/espocrm/espocrm/releases/tag/9.3.4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:25f60fbf4ae89a888ecf9aac15084f9d81651856b6fbb980c269f53b1c0f71b0 · sha256:e9ab690710ddaf28… · /containers/cna/references/2
{"name":"https://github.com/espocrm/espocrm/security/advisories/GHSA-6m4j-fwrx-crh7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/espocrm/espocrm/security/advisories/GHSA-6m4j-fwrx-crh7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:25f60fbf4ae89a888ecf9aac15084f9d81651856b6fbb980c269f53b1c0f71b0 · sha256:e9ab690710ddaf28… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/espocrm/espocrm/security/advisories/GHSA-6m4j-fwrx-crh7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:25f60fbf4ae89a888ecf9aac15084f9d81651856b6fbb980c269f53b1c0f71b0 · sha256:e9ab690710ddaf28… · /containers/adp/0/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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