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CVE-2026-34043

Serialize JavaScript to a superset of JSON that includes regular expressions and functions. Prior to version 7.0.5, there is a Denial of Service (DoS) vulnerability caused by CPU exhaustion. When serializing a specially crafted "array-like" object (an object that inherits from Array.prototype but has a very large length property), the process enters an intensive loop that consumes 100% CPU and hangs indefinitely. This issue has been patched in version 7.0.5.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:bea3078a1d7eb5c9ecaf9a84a6da1e9ade7c4b09b09d435eeea885da053af142
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-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5b6fd3afa85e859322838888a282165fc42a056e3b36f660d7acbf15990c311d · sha256:d9936e2c6a88c413… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-834","description":"CWE-834: Excessive Iteration","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5b6fd3afa85e859322838888a282165fc42a056e3b36f660d7acbf15990c311d · sha256:d9936e2c6a88c413… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"serialize-javascript","vendor":"yahoo","versions":[{"status":"affected","version":"< 7.0.5"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5b6fd3afa85e859322838888a282165fc42a056e3b36f660d7acbf15990c311d · sha256:d9936e2c6a88c413… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5b6fd3afa85e859322838888a282165fc42a056e3b36f660d7acbf15990c311d · sha256:d9936e2c6a88c413… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5b6fd3afa85e859322838888a282165fc42a056e3b36f660d7acbf15990c311d · sha256:d9936e2c6a88c413… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-834","description":"CWE-834: Excessive Iteration","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5b6fd3afa85e859322838888a282165fc42a056e3b36f660d7acbf15990c311d · sha256:d9936e2c6a88c413… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/yahoo/serialize-javascript/commit/f147e90269b58bb6e539cfdf3d0e20d6ad14204b","tags":["x_refsource_MISC"],"url":"https://github.com/yahoo/serialize-javascript/commit/f147e90269b58bb6e539cfdf3d0e20d6ad14204b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5b6fd3afa85e859322838888a282165fc42a056e3b36f660d7acbf15990c311d · sha256:d9936e2c6a88c413… · /containers/cna/references/1
{"name":"https://github.com/yahoo/serialize-javascript/releases/tag/v7.0.5","tags":["x_refsource_MISC"],"url":"https://github.com/yahoo/serialize-javascript/releases/tag/v7.0.5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5b6fd3afa85e859322838888a282165fc42a056e3b36f660d7acbf15990c311d · sha256:d9936e2c6a88c413… · /containers/cna/references/2
{"name":"https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-qj8w-gfj5-8c6v","tags":["x_refsource_CONFIRM"],"url":"https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-qj8w-gfj5-8c6v"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5b6fd3afa85e859322838888a282165fc42a056e3b36f660d7acbf15990c311d · sha256:d9936e2c6a88c413… · /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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