190 lines
7.9 KiB
JSON
190 lines
7.9 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-67216",
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"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"state": "PUBLISHED",
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"assignerShortName": "VulnCheck",
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"dateReserved": "2026-07-28T19:20:19.157Z",
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"datePublished": "2026-07-29T13:32:03.696Z",
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"dateUpdated": "2026-07-30T15:19:59.613Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"shortName": "VulnCheck",
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"dateUpdated": "2026-07-29T16:00:06.548Z"
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},
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"title": "cJSON cJSON_Compare Exponential Complexity Denial of Service",
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"descriptions": [
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{
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"lang": "en",
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"value": "cJSON through 1.7.19 contains an inefficient algorithmic complexity flaw in cJSON_Compare(). When comparing objects, the function recurses into each shared subtree twice, once in each direction, with no depth guard, making the running time exponential in nesting depth. A small, deeply nested document of a few hundred bytes (depth around 40) compared for equality consumes hours of CPU, and the cost roughly doubles with each additional level of nesting. An application that calls cJSON_Compare() on attacker-influenced JSON that is structurally equal to a reference document is exposed to a denial-of-service condition."
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}
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],
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"datePublic": "2026-07-25T00:00:00.000Z",
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"cweId": "CWE-407",
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"description": "Inefficient Algorithmic Complexity",
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"type": "CWE"
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}
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]
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}
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],
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"affected": [
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{
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"vendor": "DaveGamble",
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"product": "cJSON",
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"defaultStatus": "affected",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"versionType": "semver",
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"lessThanOrEqual": "1.7.19"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:davegamble:cjson:*:*:*:*:*:*:*:*"
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}
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]
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}
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]
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}
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],
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"metrics": [
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{
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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],
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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "PRESENT",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"subConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "HIGH",
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"subAvailabilityImpact": "NONE",
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"exploitMaturity": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"valueDensity": "NOT_DEFINED",
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"vulnerabilityResponseEffort": "NOT_DEFINED",
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"providerUrgency": "NOT_DEFINED",
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"version": "4.0",
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"baseSeverity": "HIGH",
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"baseScore": 8.2,
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
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}
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},
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{
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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],
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"cvssV3_1": {
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"attackVector": "NETWORK",
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"attackComplexity": "HIGH",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "HIGH",
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"version": "3.1",
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"baseSeverity": "MEDIUM",
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"baseScore": 5.9,
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
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}
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}
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],
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"references": [
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{
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"url": "https://joshua.hu/cjson-json-parser-cve-vulnerabilities",
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"tags": [
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"exploit"
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],
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"name": "Security vulnerabilities in the cJSON JSON parser (Joshua Rogers)"
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},
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{
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"url": "https://github.com/DaveGamble/cJSON/blob/v1.7.19/cJSON.c#L3057-L3180",
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"tags": [
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"technical-description"
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],
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"name": "cJSON_Compare double-recursion object comparison (cJSON.c)"
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},
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{
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"name": "VulnCheck Advisory: cJSON cJSON_Compare Exponential Complexity Denial of Service",
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"tags": [
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"third-party-advisory"
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],
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"url": "https://www.vulncheck.com/advisories/cjson-cjson-compare-exponential-complexity-denial-of-service"
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}
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],
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"x_generator": {
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"engine": "vulncheck-endgame"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-07-30T13:38:48.858891Z",
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"id": "CVE-2026-67216",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-07-30T15:19:59.613Z"
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}
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}
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]
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}
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} |