MobilityDB version 1.3.0 and earlier contains an out-of-bounds read vulnerability in the MEOS binary and library WKB deserialization logic that allows unprivileged database users to crash the PostgreSQL backend process by supplying a crafted WKB payload with a negative length field. The negative length value wraps to a large unsigned size_t due to missing signed validation, bypasses an overflow-unsafe pointer arithmetic bounds check in wkb_parse_state_check(), and causes memcpy() in text_from_wkb_state() to operate with a corrupted unbounded length, resulting in a remote denial-of-service condition affecting all sessions on the PostgreSQL instance.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-195"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102639.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "1.1.0"
},
{
"last_affected": "1.1.2"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "1.2.0"
},
{
"fixed": "1.2.2"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "1.3.0"
},
{
"fixed": "1.3.1"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"original_tag": "v1.3.1",
"range": [
{
"fixed": "3bd6609ccf1b8f929e3988d40238c577cb8252a1"
}
],
"source": "REFERENCES_TAG"
},
{
"original_tag": "v1.2.2",
"range": [
{
"fixed": "f02cf5772a7c2f61fa729c29c333da7a45c4709e"
}
],
"source": "REFERENCES_TAG"
}
]
}