Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-54696

Ruby JSON is a JSON implementation for Ruby. Versions 2.9.0 through 2.19.8 are vulnerable to heap buffer overflow when the JSON generator is provided with an oversized streamed object. When streaming to an IO JSON.dump(obj, io) and JSON::State#generate(obj, io) can write past the internal JSON generator buffer when a streamed object contains an attacker-controlled string near 16 KB. Exploitation would result in a reliable process crash/denial of service. This issue has been fixed in version 2.19
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:9ff9d9c3ffe1ca3a6f613a524cddc097e9864119d3fc500da768c791ef2187bb
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-787","description":"CWE-787: Out-of-bounds Write","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2f3f46e48a46917a936cd7caffe7d957b67a67062fab50626b8896c397e596c7 · sha256:8f923fbcd1a9372b… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-122","description":"CWE-122: Heap-based Buffer Overflow","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2f3f46e48a46917a936cd7caffe7d957b67a67062fab50626b8896c397e596c7 · sha256:8f923fbcd1a9372b… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-131","description":"CWE-131: Incorrect Calculation of Buffer Size","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2f3f46e48a46917a936cd7caffe7d957b67a67062fab50626b8896c397e596c7 · sha256:8f923fbcd1a9372b… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"json","vendor":"ruby","versions":[{"status":"affected","version":">= 2.9.0, < 2.19.9"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2f3f46e48a46917a936cd7caffe7d957b67a67062fab50626b8896c397e596c7 · sha256:8f923fbcd1a9372b… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":3.7,"baseSeverity":"LOW","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:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2f3f46e48a46917a936cd7caffe7d957b67a67062fab50626b8896c397e596c7 · sha256:8f923fbcd1a9372b… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-787","description":"CWE-787: Out-of-bounds Write","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2f3f46e48a46917a936cd7caffe7d957b67a67062fab50626b8896c397e596c7 · sha256:8f923fbcd1a9372b… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-122","description":"CWE-122: Heap-based Buffer Overflow","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2f3f46e48a46917a936cd7caffe7d957b67a67062fab50626b8896c397e596c7 · sha256:8f923fbcd1a9372b… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-131","description":"CWE-131: Incorrect Calculation of Buffer Size","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2f3f46e48a46917a936cd7caffe7d957b67a67062fab50626b8896c397e596c7 · sha256:8f923fbcd1a9372b… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/ruby/json/releases/tag/v2.19.9","tags":["x_refsource_MISC"],"url":"https://github.com/ruby/json/releases/tag/v2.19.9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2f3f46e48a46917a936cd7caffe7d957b67a67062fab50626b8896c397e596c7 · sha256:8f923fbcd1a9372b… · /containers/cna/references/1
{"name":"https://github.com/ruby/json/security/advisories/GHSA-x2f5-4prf-w687","tags":["x_refsource_CONFIRM"],"url":"https://github.com/ruby/json/security/advisories/GHSA-x2f5-4prf-w687"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2f3f46e48a46917a936cd7caffe7d957b67a67062fab50626b8896c397e596c7 · sha256:8f923fbcd1a9372b… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/ruby/json/security/advisories/GHSA-x2f5-4prf-w687"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2f3f46e48a46917a936cd7caffe7d957b67a67062fab50626b8896c397e596c7 · sha256:8f923fbcd1a9372b… · /containers/adp/0/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.

← Back to CVE Explorer