CVE Explorer
CVE-2026-8295
An integer overflow vulnerability in the simdjson document-builder API allows incorrect buffer size calculations in "string_builder::escape_and_append()" when processing very large input strings on platforms with limited "size_t" width (e.g., 32-bit builds). The overflow can cause insufficient buffer allocation, leading to out-of-bounds memory reads in SIMD routines and potentially resulting in information disclosure, memory corruption, or malformed JSON output.
This vulnerability has been fixed
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","modules":["string_builder"],"platforms":["32 bit"],"product":"simdjson","programFiles":["include/simdjson/generic/builder/json_string_builder-inl.h"],"repo":"https://github.com/simdjson/simdjson","vendor":"simdjson","versions":[{"lessThan":"4.6.4","status":"affected","version":"0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:4ee0b461c6da05092f904adb0d08e1037295cd6b33d85dfdfca73a370278d466 · sha256:987e684537c1000f… · /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":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NO…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:4ee0b461c6da05092f904adb0d08e1037295cd6b33d85dfdfca73a370278d466 · sha256:987e684537c1000f… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-190","description":"CWE-190 Integer Overflow or Wraparound","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:4ee0b461c6da05092f904adb0d08e1037295cd6b33d85dfdfca73a370278d466 · sha256:987e684537c1000f… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"tags":["third-party-advisory"],"url":"https://cert.pl/posts/2026/05/CVE-2026-8295"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:4ee0b461c6da05092f904adb0d08e1037295cd6b33d85dfdfca73a370278d466 · sha256:987e684537c1000f… · /containers/cna/references/1
{"tags":["release-notes"],"url":"https://github.com/simdjson/simdjson/releases/tag/v4.6.4"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:4ee0b461c6da05092f904adb0d08e1037295cd6b33d85dfdfca73a370278d466 · sha256:987e684537c1000f… · /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.