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CVE-2026-41486

Ray is an AI compute engine. From version 2.54.0 to before version 2.55.0, Ray Data registers custom Arrow extension types (ray.data.arrow_tensor, ray.data.arrow_tensor_v2, ray.data.arrow_variable_shaped_tensor) globally in PyArrow. When PyArrow reads a Parquet file containing one of these extension types, it calls __arrow_ext_deserialize__ on the field's metadata bytes. Ray's implementation passes these bytes directly to cloudpickle.loads(), achieving arbitrary code execution during schema pars
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2861b32913daaf6c64ca131479d3142d6c40cb8d5bae72b8e9134b693889ba70
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-502","description":"CWE-502: Deserialization of Untrusted Data","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:cd143ac267bc768a52cfb756a6ba35db7518bbafe095b4bd551ed0b42c631588 · sha256:4a96ed5274bb2dfa… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:cd143ac267bc768a52cfb756a6ba35db7518bbafe095b4bd551ed0b42c631588 · sha256:4a96ed5274bb2dfa… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"ray","vendor":"ray-project","versions":[{"status":"affected","version":">= 2.54.0, < 2.55.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:cd143ac267bc768a52cfb756a6ba35db7518bbafe095b4bd551ed0b42c631588 · sha256:4a96ed5274bb2dfa… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.9,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"ACTIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:cd143ac267bc768a52cfb756a6ba35db7518bbafe095b4bd551ed0b42c631588 · sha256:4a96ed5274bb2dfa… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-502","description":"CWE-502: Deserialization of Untrusted Data","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:cd143ac267bc768a52cfb756a6ba35db7518bbafe095b4bd551ed0b42c631588 · sha256:4a96ed5274bb2dfa… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:cd143ac267bc768a52cfb756a6ba35db7518bbafe095b4bd551ed0b42c631588 · sha256:4a96ed5274bb2dfa… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/ray-project/ray/commit/c02bd31ae31996805868baa446a131a8d304525f","tags":["x_refsource_MISC"],"url":"https://github.com/ray-project/ray/commit/c02bd31ae31996805868baa446a131a8d304525f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cd143ac267bc768a52cfb756a6ba35db7518bbafe095b4bd551ed0b42c631588 · sha256:4a96ed5274bb2dfa… · /containers/cna/references/2
{"name":"https://github.com/ray-project/ray/pull/62056","tags":["x_refsource_MISC"],"url":"https://github.com/ray-project/ray/pull/62056"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cd143ac267bc768a52cfb756a6ba35db7518bbafe095b4bd551ed0b42c631588 · sha256:4a96ed5274bb2dfa… · /containers/cna/references/1
{"name":"https://github.com/ray-project/ray/releases/tag/ray-2.55.0","tags":["x_refsource_MISC"],"url":"https://github.com/ray-project/ray/releases/tag/ray-2.55.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cd143ac267bc768a52cfb756a6ba35db7518bbafe095b4bd551ed0b42c631588 · sha256:4a96ed5274bb2dfa… · /containers/cna/references/3
{"name":"https://github.com/ray-project/ray/security/advisories/GHSA-mw35-8rx3-xf9r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/ray-project/ray/security/advisories/GHSA-mw35-8rx3-xf9r"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cd143ac267bc768a52cfb756a6ba35db7518bbafe095b4bd551ed0b42c631588 · sha256:4a96ed5274bb2dfa… · /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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