Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-42073

OpenClaude is an open-source coding-agent command line interface for cloud and local model providers. Prior to version 0.5.1, the OpenClaude MCP authentication flow starts a temporary local HTTP server to handle OAuth callbacks. To prevent CSRF attacks, the server validates a state parameter against an internally stored value. However, due to a logic flaw in the order of conditionals, an attacker can completely bypass this check and force the server to shut down — without knowing the state value
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e9c79d5d2038bd39c52749b32b6046a0adae83efa05825829ef6a287d44c3b38
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-352","description":"CWE-352: Cross-Site Request Forgery (CSRF)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:aa0a53ebb7eb56bfd16f7a121ff34700dfcde3f3fbc08a1067479d7d2f842bfc · sha256:d22664a0ec3d2c98… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:aa0a53ebb7eb56bfd16f7a121ff34700dfcde3f3fbc08a1067479d7d2f842bfc · sha256:d22664a0ec3d2c98… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"openclaude","vendor":"Gitlawb","versions":[{"status":"affected","version":"< 0.5.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:aa0a53ebb7eb56bfd16f7a121ff34700dfcde3f3fbc08a1067479d7d2f842bfc · sha256:d22664a0ec3d2c98… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:aa0a53ebb7eb56bfd16f7a121ff34700dfcde3f3fbc08a1067479d7d2f842bfc · sha256:d22664a0ec3d2c98… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-352","description":"CWE-352: Cross-Site Request Forgery (CSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:aa0a53ebb7eb56bfd16f7a121ff34700dfcde3f3fbc08a1067479d7d2f842bfc · sha256:d22664a0ec3d2c98… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:aa0a53ebb7eb56bfd16f7a121ff34700dfcde3f3fbc08a1067479d7d2f842bfc · sha256:d22664a0ec3d2c98… · /containers/cna/problemTypes/1/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/Gitlawb/openclaude/commit/739b8d1f40fde0e401a5cbd2b9a55d88bd5124ad","tags":["x_refsource_MISC"],"url":"https://github.com/Gitlawb/openclaude/commit/739b8d1f40fde0e401a5cbd2b9a55d88bd5124ad"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aa0a53ebb7eb56bfd16f7a121ff34700dfcde3f3fbc08a1067479d7d2f842bfc · sha256:d22664a0ec3d2c98… · /containers/cna/references/1
{"name":"https://github.com/Gitlawb/openclaude/releases/tag/v0.5.1","tags":["x_refsource_MISC"],"url":"https://github.com/Gitlawb/openclaude/releases/tag/v0.5.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aa0a53ebb7eb56bfd16f7a121ff34700dfcde3f3fbc08a1067479d7d2f842bfc · sha256:d22664a0ec3d2c98… · /containers/cna/references/2
{"tags":["exploit"],"url":"https://github.com/Gitlawb/openclaude/security/advisories/GHSA-c73c-x77g-854r"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aa0a53ebb7eb56bfd16f7a121ff34700dfcde3f3fbc08a1067479d7d2f842bfc · sha256:d22664a0ec3d2c98… · /containers/adp/0/references/0
{"name":"https://github.com/Gitlawb/openclaude/security/advisories/GHSA-c73c-x77g-854r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Gitlawb/openclaude/security/advisories/GHSA-c73c-x77g-854r"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aa0a53ebb7eb56bfd16f7a121ff34700dfcde3f3fbc08a1067479d7d2f842bfc · sha256:d22664a0ec3d2c98… · /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.

← Back to CVE Explorer