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CVE-2026-58166

OpenBMB ChatDev through 2.2.0, fixed in commit 4fd4da6, contains a path traversal vulnerability that allows unauthenticated remote attackers to write or delete arbitrary files by supplying a malicious multipart filename in the file upload endpoint. Attackers can send a crafted filename containing path traversal sequences or an absolute path to the POST uploads session endpoint, which constructs the destination path without sanitization in save_upload_file, causing file write and cleanup operatio
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7a97774cb3f4b8434e632adf990e2e872c568338e21323186252c8317c184637
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.8,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2e73647aa6d4be413619211c8786fee377cac94287d5e408b836fc6b3032bb78 · sha256:359be04737dcf715… · /containers/cna/metrics/1/cvssV4_0

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2e73647aa6d4be413619211c8786fee377cac94287d5e408b836fc6b3032bb78 · sha256:359be04737dcf715… · /containers/cna/metrics/0/cvssV3_1

Affected products and versions

1 source assertion
{"defaultStatus":"affected","packageURL":"pkg:github/OpenBMB/ChatDev","product":"ChatDev","repo":"https://github.com/OpenBMB/ChatDev","vendor":"OpenBMB","versions":[{"lessThanOrEqual":"2.2.0","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"4fd4da603801766b14ad8788649cfc1ad21f99a6","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2e73647aa6d4be413619211c8786fee377cac94287d5e408b836fc6b3032bb78 · sha256:359be04737dcf715… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.8,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2e73647aa6d4be413619211c8786fee377cac94287d5e408b836fc6b3032bb78 · sha256:359be04737dcf715… · /containers/cna/metrics/1/cvssV4_0
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2e73647aa6d4be413619211c8786fee377cac94287d5e408b836fc6b3032bb78 · sha256:359be04737dcf715… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-22","description":"Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2e73647aa6d4be413619211c8786fee377cac94287d5e408b836fc6b3032bb78 · sha256:359be04737dcf715… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"Fix Commit","tags":["patch"],"url":"https://github.com/OpenBMB/ChatDev/commit/4fd4da603801766b14ad8788649cfc1ad21f99a6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2e73647aa6d4be413619211c8786fee377cac94287d5e408b836fc6b3032bb78 · sha256:359be04737dcf715… · /containers/cna/references/2
{"name":"Researcher Disclosure","tags":["technical-description","exploit"],"url":"https://github.com/OpenBMB/ChatDev/issues/638"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2e73647aa6d4be413619211c8786fee377cac94287d5e408b836fc6b3032bb78 · sha256:359be04737dcf715… · /containers/cna/references/0
{"name":"Fix PR","tags":["issue-tracking"],"url":"https://github.com/OpenBMB/ChatDev/pull/641"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2e73647aa6d4be413619211c8786fee377cac94287d5e408b836fc6b3032bb78 · sha256:359be04737dcf715… · /containers/cna/references/1
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/openbmb-chatdev-unauthenticated-path-traversal-in-upload-handler-allows-arbitrary-file-write-and-delete"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2e73647aa6d4be413619211c8786fee377cac94287d5e408b836fc6b3032bb78 · sha256:359be04737dcf715… · /containers/cna/references/3

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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