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.
CVE-2026-102639
MEDIUMPre-NVD 6.56.5—Trending — 3 sources updated this week
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (23rd percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 6.5Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 6.5
- EG Score
- 6.5MEDIUMmedium confidence
- EG Risk
- 29EG Risk 29/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity65% × 45%Exploitation0% × 40%Automatability0% × 15%CISA SSVC: Track at every mission impact level.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.3%
- EPSS %ILE
- 23rd
- KEV
- Not listed
CISA SSVCTrack at every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
September 29, 2026
Last Modified
October 2, 2026
Advisory Details (4)
Auto-updated Sep 29, 2026Patch available. Sources: github, github_release.
generic
MobilityDB through 1.3.0 Out-of-bounds Read DoS via WKB Deserialization | Advisories | VulnCheck
https://www.vulncheck.com/advisories/mobilitydb-through-out-of-bounds-read-dos-via-wkb-deserializationgithub_release Patch Available
MobilityDB v1.2.2
Patch available: MobilityDB/MobilityDB v1.2.2
https://github.com/MobilityDB/MobilityDB/releases/tag/v1.2.2github_release Patch Available
MobilityDB v1.3.1
Patch available: MobilityDB/MobilityDB v1.3.1
https://github.com/MobilityDB/MobilityDB/releases/tag/v1.3.1github Patch Available
Out-of-bounds read in the Well-Known Binary input of temporal, set and span values · Advisory · MobilityDB/MobilityDB · GitHub
Affected: 1.3.1 and 1.2.2. The 1.1 series receives no fix; its users upgrade to 1.2.2 or 1.
https://github.com/MobilityDB/MobilityDB/security/advisories/GHSA-2c92-2w7c-pm3gWeakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 12× in last 7d / 12× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-10-04 23:21 UTCEPSS rescore
- 2026-10-04 15:28 UTCEG score recompute
- 2026-10-03 14:25 UTCEPSS rescore
- 2026-10-03 14:25 UTCEG score recompute
- 2026-10-02 13:18 UTCEG score recompute
- 2026-10-02 12:46 UTCEG score recompute
- 2026-10-01 19:49 UTCEPSS rescore
- 2026-09-30 17:45 UTCEG score recompute
- 2026-09-30 15:02 UTCEPSS rescore
- 2026-09-29 18:26 UTCEG score recompute
- 2026-09-29 18:06 UTCEG score recompute
- 2026-09-29 18:03 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-102639?
CVE-2026-102639 is a medium vulnerability published on September 29, 2026. 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…
When was CVE-2026-102639 disclosed?
CVE-2026-102639 was first published on September 29, 2026, with the most recent update on October 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-102639 actively exploited?
CVE-2026-102639 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (23rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-102639?
CVE-2026-102639 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-102639?
A fix for CVE-2026-102639 is available: update to the fixed version the vendor names in its advisory.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-102639
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