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CVE-2026-34450

The Claude SDK for Python provides access to the Claude API from Python applications. From version 0.86.0 to before version 0.87.0, the local filesystem memory tool in the Anthropic Python SDK created memory files with mode 0o666, leaving them world-readable on systems with a standard umask and world-writable in environments with a permissive umask such as many Docker base images. A local attacker on a shared host could read persisted agent state, and in containerized deployments could modify me
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2f3f46a6405172b239c3b6cd1a73c1cf91599fea0732fee829e710b7183fcfba
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-276","description":"CWE-276: Incorrect Default Permissions","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7f9b2d9079b8a97cfdb4e9cf693c90966b173a86946ad3318be0ed0b32b12ed8 · sha256:a7be8d1b11bdb773… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-732","description":"CWE-732: Incorrect Permission Assignment for Critical Resource","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7f9b2d9079b8a97cfdb4e9cf693c90966b173a86946ad3318be0ed0b32b12ed8 · sha256:a7be8d1b11bdb773… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"anthropic-sdk-python","vendor":"anthropics","versions":[{"status":"affected","version":">= 0.86.0, < 0.87.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7f9b2d9079b8a97cfdb4e9cf693c90966b173a86946ad3318be0ed0b32b12ed8 · sha256:a7be8d1b11bdb773… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":4.8,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7f9b2d9079b8a97cfdb4e9cf693c90966b173a86946ad3318be0ed0b32b12ed8 · sha256:a7be8d1b11bdb773… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-276","description":"CWE-276: Incorrect Default Permissions","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7f9b2d9079b8a97cfdb4e9cf693c90966b173a86946ad3318be0ed0b32b12ed8 · sha256:a7be8d1b11bdb773… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-732","description":"CWE-732: Incorrect Permission Assignment for Critical Resource","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7f9b2d9079b8a97cfdb4e9cf693c90966b173a86946ad3318be0ed0b32b12ed8 · sha256:a7be8d1b11bdb773… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/anthropics/anthropic-sdk-python/commit/715030ceb4d6dd8d3546e999c680e29532bf1255","tags":["x_refsource_MISC"],"url":"https://github.com/anthropics/anthropic-sdk-python/commit/715030ceb4d6dd8d3546e999c680e29532bf1255"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7f9b2d9079b8a97cfdb4e9cf693c90966b173a86946ad3318be0ed0b32b12ed8 · sha256:a7be8d1b11bdb773… · /containers/cna/references/1
{"name":"https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.87.0","tags":["x_refsource_MISC"],"url":"https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.87.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7f9b2d9079b8a97cfdb4e9cf693c90966b173a86946ad3318be0ed0b32b12ed8 · sha256:a7be8d1b11bdb773… · /containers/cna/references/2
{"name":"https://github.com/anthropics/anthropic-sdk-python/security/advisories/GHSA-q5f5-3gjm-7mfm","tags":["x_refsource_CONFIRM"],"url":"https://github.com/anthropics/anthropic-sdk-python/security/advisories/GHSA-q5f5-3gjm-7mfm"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7f9b2d9079b8a97cfdb4e9cf693c90966b173a86946ad3318be0ed0b32b12ed8 · sha256:a7be8d1b11bdb773… · /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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