CVE-2026-102639
MobilityDB through 1.3.0 Out-of-bounds Read DoS via WKB Deserialization
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.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| MobilityDB MobilityDB MobilityDB/MobilityDB
github |
≥ 1.1.0; ≤ 1.1.2 (affected, semver) ≥ 1.2.0; < 1.2.2 (affected, semver) ≥ 1.3.0; < 1.3.1 (affected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 7.1 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 6.5 medium |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | CNA: VulnCheck |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/MobilityDB/MobilityDB/security/advisories/GHSA-2c92-2w7c-pm3gCNA: VulnCheck · vendor-advisory, technical-description
- https://github.com/MobilityDB/MobilityDB/releases/tag/v1.3.1CNA: VulnCheck · patch, release-notes
- https://github.com/MobilityDB/MobilityDB/releases/tag/v1.2.2CNA: VulnCheck · patch, release-notes
- https://www.vulncheck.com/advisories/mobilitydb-through-out-of-bounds-read-dos-via-wkb-deserializationCNA: VulnCheck · third-party-advisory
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