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CVE-2026-46580

In Eclipse Theia versions prior to 1.71.0, files matching the pattern .prompts/*.prompttemplate in a workspace were automatically loaded and could override or extend the AI agent's system prompts. An attacker could craft a malicious repository containing prompt template files that, when the workspace was opened in Theia, replaced the AI's system instructions with attacker-controlled content (indirect prompt injection). Combined with other AI chat features available in untrusted workspaces, this
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e90265ebe74d0737750807db15e6536aa185b9721d5f9663a224b45e005371e8
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-829","description":"CWE-829: Inclusion of Functionality from Untrusted Control Sphere","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:bc051121813ab89f75e7d41fabe51cc1b8b462a9368ce5e5810518dc984c65c8 · sha256:8afebd0766de4377… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-1427","description":"CWE-1427: Improper Neutralization of Input Used for LLM Prompting","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:bc051121813ab89f75e7d41fabe51cc1b8b462a9368ce5e5810518dc984c65c8 · sha256:8afebd0766de4377… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"Eclipse Theia","repo":"https://github.com/eclipse-theia/theia","vendor":"Eclipse Foundation","versions":[{"lessThan":"1.71.0","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bc051121813ab89f75e7d41fabe51cc1b8b462a9368ce5e5810518dc984c65c8 · sha256:8afebd0766de4377… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":8.4,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"ACTIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/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:bc051121813ab89f75e7d41fabe51cc1b8b462a9368ce5e5810518dc984c65c8 · sha256:8afebd0766de4377… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-829","description":"CWE-829: Inclusion of Functionality from Untrusted Control Sphere","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:bc051121813ab89f75e7d41fabe51cc1b8b462a9368ce5e5810518dc984c65c8 · sha256:8afebd0766de4377… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-1427","description":"CWE-1427: Improper Neutralization of Input Used for LLM Prompting","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:bc051121813ab89f75e7d41fabe51cc1b8b462a9368ce5e5810518dc984c65c8 · sha256:8afebd0766de4377… · /containers/cna/problemTypes/1/descriptions/0

Source references

1 source assertion
{"url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/114"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bc051121813ab89f75e7d41fabe51cc1b8b462a9368ce5e5810518dc984c65c8 · sha256:8afebd0766de4377… · /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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