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CVE-2026-49471

Serena is a powerful MCP toolkit for coding that provides semantic retrieval and editing capabilities. Prior to v1.5.2, Serena's built-in web dashboard exposes an unauthenticated Flask API on a fixed, predictable port, with no authentication, no CSRF protection, and no Host header validation. A DNS rebinding attack allows a malicious webpage to reach this API from any browser and write arbitrary content to the agent's persistent memory store, which the agent reads and acts on autonomously. Combi
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:eb12f2c59f55b7ff95cfeb49447addae2868784d21f7856df3a02628e4fe9538
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-306","description":"CWE-306: Missing Authentication for Critical Function","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2f94cc9e89abc01154e733e4b43a2adc34f846741edbf9a8568fc990fe67c7da · sha256:00fee9eb77d5b170… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-352","description":"CWE-352: Cross-Site Request Forgery (CSRF)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2f94cc9e89abc01154e733e4b43a2adc34f846741edbf9a8568fc990fe67c7da · sha256:00fee9eb77d5b170… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"serena","vendor":"oraios","versions":[{"status":"affected","version":"< 1.5.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2f94cc9e89abc01154e733e4b43a2adc34f846741edbf9a8568fc990fe67c7da · sha256:00fee9eb77d5b170… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.3,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2f94cc9e89abc01154e733e4b43a2adc34f846741edbf9a8568fc990fe67c7da · sha256:00fee9eb77d5b170… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-306","description":"CWE-306: Missing Authentication for Critical Function","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2f94cc9e89abc01154e733e4b43a2adc34f846741edbf9a8568fc990fe67c7da · sha256:00fee9eb77d5b170… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-352","description":"CWE-352: Cross-Site Request Forgery (CSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2f94cc9e89abc01154e733e4b43a2adc34f846741edbf9a8568fc990fe67c7da · sha256:00fee9eb77d5b170… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/oraios/serena/commit/016ccbe1c095a3eed7967737ac1d4df2754f5d96","tags":["x_refsource_MISC"],"url":"https://github.com/oraios/serena/commit/016ccbe1c095a3eed7967737ac1d4df2754f5d96"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2f94cc9e89abc01154e733e4b43a2adc34f846741edbf9a8568fc990fe67c7da · sha256:00fee9eb77d5b170… · /containers/cna/references/1
{"name":"https://github.com/oraios/serena/releases/tag/v1.5.2","tags":["x_refsource_MISC"],"url":"https://github.com/oraios/serena/releases/tag/v1.5.2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2f94cc9e89abc01154e733e4b43a2adc34f846741edbf9a8568fc990fe67c7da · sha256:00fee9eb77d5b170… · /containers/cna/references/2
{"name":"https://github.com/oraios/serena/security/advisories/GHSA-37h2-6p4f-mp3q","tags":["x_refsource_CONFIRM"],"url":"https://github.com/oraios/serena/security/advisories/GHSA-37h2-6p4f-mp3q"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2f94cc9e89abc01154e733e4b43a2adc34f846741edbf9a8568fc990fe67c7da · sha256:00fee9eb77d5b170… · /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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