CVE Explorer

CVE-2026-9334

Cpanel::JSON::XS versions before 4.41 for Perl allow type confusion via duplicate object keys when dupkeys_as_arrayref is enabled. decode_hv() collapses duplicate object keys into an array reference under dupkeys_as_arrayref. The branch reached for a duplicate key tests `SvTYPE (old_value) != SVt_RV && SvTYPE (SvRV (old_value)) != SVt_PVAV`, which evaluates SvRV(old_value) before establishing that old_value is a reference. When the existing value is a plain scalar rather than an array reference

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:12ebf2149de0bc9599b73dda34fda7249986631a7fed6edd24b7e4bd96060965

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","packageName":"Cpanel-JSON-XS","product":"Cpanel::JSON::XS","programFiles":["XS.xs"],"programRoutines":[{"name":"decode_hv"}],"repo":"https://github.com/rurban/Cpanel-JSON-XS","vendor":"RURBAN","versions":[{"lessThan":"4.41","status":"affected","version":"0","versionType":"custom"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:4fb6c1931c868447f362970fcf39f6704ae07dbe0e80ec3d62e34c07d9ebaeb6 · sha256:741debe954ea899a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.3,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:4fb6c1931c868447f362970fcf39f6704ae07dbe0e80ec3d62e34c07d9ebaeb6 · sha256:741debe954ea899a… · /containers/adp/1/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-843","description":"CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:4fb6c1931c868447f362970fcf39f6704ae07dbe0e80ec3d62e34c07d9ebaeb6 · sha256:741debe954ea899a… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"url":"http://www.openwall.com/lists/oss-security/2026/06/03/4"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4fb6c1931c868447f362970fcf39f6704ae07dbe0e80ec3d62e34c07d9ebaeb6 · sha256:741debe954ea899a… · /containers/adp/0/references/0

{"tags":["patch"],"url":"https://github.com/rurban/Cpanel-JSON-XS/commit/11a7c550a0d8fac2f84414f24d5df9b2bfe346e2.patch"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4fb6c1931c868447f362970fcf39f6704ae07dbe0e80ec3d62e34c07d9ebaeb6 · sha256:741debe954ea899a… · /containers/cna/references/0

{"tags":["release-notes"],"url":"https://metacpan.org/release/RURBAN/Cpanel-JSON-XS-4.41/changes"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4fb6c1931c868447f362970fcf39f6704ae07dbe0e80ec3d62e34c07d9ebaeb6 · sha256:741debe954ea899a… · /containers/cna/references/1

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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