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CVE-2026-10055

In Eclipse Theia since version 1.26.0, the backend /services/request-service RPC accepts an attacker-controlled URL from any client connected to the standard /services messaging endpoint, performs the HTTP request server-side, and returns the full response body to the caller. Because the destination URL is neither validated nor allowlisted, a remote attacker with access to the Theia service connection can issue server-side HTTP requests to localhost or other backend-reachable hosts and read
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:40d3d7888da6893c8852f1ca92356ff1a9430ce5d0b5cc5d2162c9fa647b41ff
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-918","description":"CWE-918 Server-Side request forgery (SSRF)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a822dc7ef433cf9c27b8db8740c99cccf870c6bcea55095e5ab2243dbce73202 · sha256:674218d9a22ec531… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-200","description":"CWE-200 Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a822dc7ef433cf9c27b8db8740c99cccf870c6bcea55095e5ab2243dbce73202 · sha256:674218d9a22ec531… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"Eclipse Theia","vendor":"Eclipse Foundation","versions":[{"lessThan":"1.73.0","status":"affected","version":"1.26.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a822dc7ef433cf9c27b8db8740c99cccf870c6bcea55095e5ab2243dbce73202 · sha256:674218d9a22ec531… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a822dc7ef433cf9c27b8db8740c99cccf870c6bcea55095e5ab2243dbce73202 · sha256:674218d9a22ec531… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-918","description":"CWE-918 Server-Side request forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a822dc7ef433cf9c27b8db8740c99cccf870c6bcea55095e5ab2243dbce73202 · sha256:674218d9a22ec531… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-200","description":"CWE-200 Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a822dc7ef433cf9c27b8db8740c99cccf870c6bcea55095e5ab2243dbce73202 · sha256:674218d9a22ec531… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions
{"url":"https://github.com/eclipse-theia/theia/security/advisories/GHSA-2m57-xxmh-v696"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a822dc7ef433cf9c27b8db8740c99cccf870c6bcea55095e5ab2243dbce73202 · sha256:674218d9a22ec531… · /containers/cna/references/0
{"url":"https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/446"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a822dc7ef433cf9c27b8db8740c99cccf870c6bcea55095e5ab2243dbce73202 · sha256:674218d9a22ec531… · /containers/cna/references/1

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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