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CVE-2026-34189.1CriticalCWE-434

CVE-2026-3418: Arbitrary File Upload via System REST API in Multiple WSO2 Products Allows Remote Code Execution

WSO2 · WSO2 API Manager

Vendor fix available · Affected: WSO2 API Manager · Exploitation: not established

ExploitationNot established

Not in CISA KEV as of catalogue 2026.11.10 (10 Nov)

  1. In CISA KEV: not seen
  2. Exploited (reported): not seen
  3. Scanning observed: not seen
  4. Proof of concept public: not seen
  5. Not establishedNothing in the sources we check
0.8%probability of exploitation in the next 30 days
55th percentile
050100

Higher than 55% of scored CVEs

9.1CriticalCVSS 3.1
LowCrit.

DescriptionNVD

The System REST API accepts user-supplied file uploads without enforcing sufficient validation on the file type or destination, allowing files to be written to arbitrary server-accessible locations. Exploitation requires authenticated administrative access with publisher privileges. Successful exploitation permits an authenticated publisher to upload files to server-accessible locations. Depending on the deployment environment and how uploaded files are handled, this could lead to the execution of uploaded content, potentially resulting in remote code execution.

Coverage1 article · 1 outlet

First in our coverage: SecurityOnline, 7 Aug.

  1. WSO2 Flaws Enable Account Takeover Via JWT Bypass, Patch Urged
    SecurityOnline · first in our coverage · mentions it in passing

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References

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