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CVE-2026-28794

oRPC is an tool that helps build APIs that are end-to-end type-safe and adhere to OpenAPI standards. Prior to version 1.13.6, a prototype pollution vulnerability exists in the RPC JSON deserializer of the @orpc/client package. The vulnerability allows unauthenticated, remote attackers to inject arbitrary properties into the global Object.prototype. Because this pollution persists for the lifetime of the Node.js process and affects all objects, it can lead to severe security breaches, including a
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:764eb6919ccb426378e657d4269072b495c39ccf39b0ebefcd44efa20c36fdb0
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"orpc","vendor":"middleapi","versions":[{"status":"affected","version":"< 1.13.6"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c4fe71ce386fec5375d9ce6620aa11ba5abdc40c99dc39562c209236aff6f38b · sha256:42170659ea1f01c2… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c4fe71ce386fec5375d9ce6620aa11ba5abdc40c99dc39562c209236aff6f38b · sha256:42170659ea1f01c2… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-1321","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c4fe71ce386fec5375d9ce6620aa11ba5abdc40c99dc39562c209236aff6f38b · sha256:42170659ea1f01c2… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/middleapi/orpc/commit/1dba06fc6f938c2486de303c2fa096bc1c8418b5","tags":["x_refsource_MISC"],"url":"https://github.com/middleapi/orpc/commit/1dba06fc6f938c2486de303c2fa096bc1c8418b5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c4fe71ce386fec5375d9ce6620aa11ba5abdc40c99dc39562c209236aff6f38b · sha256:42170659ea1f01c2… · /containers/cna/references/1
{"name":"https://github.com/middleapi/orpc/security/advisories/GHSA-m272-9rp6-32mc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/middleapi/orpc/security/advisories/GHSA-m272-9rp6-32mc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c4fe71ce386fec5375d9ce6620aa11ba5abdc40c99dc39562c209236aff6f38b · sha256:42170659ea1f01c2… · /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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