AEGLIX vulnerability intelligence
CVE-2026-103223
HIGH · CVSS 8.2 · Analyzed
Published: 2026-10-15 · Updated: 2026-10-20 · Source: NVD
Stored catalog record
Source record retrieved 2026-10-28T10:22:36.765297+00:00. Scheduled imports handle updates; this page does not assert that the provider was queried just now.
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Vulnerability overview
In Eclipse Vert.x versions [4.0.0, 4.5.34] or [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the PostgreSQL message decoder reads the 4-byte message length field from the PostgreSQL wire protocol without any maximum validation. A malicious, compromised, or man-in-the-middle PostgreSQL server can send a message header with the length field set to an extremely large value (up to Integer.MAX_VALUE), causing the decoder to accumulate subsequent TCP data into a composite buffer without bound, leading to unbounded memory allocation on the client and an out-of-memory crash. This occurs before authentication completes. The impacted component is io.vertx:vertx-pg-client.
Patch review priority
Assess exposure and vendor guidance
- No higher-priority signal is available in the current stored evidence.
FIRST EPSS: 0.32% · percentile 25.0 · score date 2026-10-28.
EPSS estimates probability of exploitation in the next 30 days. It does not measure your exposure or prove exploitation. The elevated threshold is 10%; CISA KEV takes precedence. About FIRST EPSS ↗
Severity and scoring
- CVSS score
- 8.2 · HIGH
- CVSS version
- 4.0
- CVSS vector
- CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Weaknesses
- CWE-789
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Not listed in the CISA catalog retrieved for this record. This does not establish that exploitation has not occurred.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*
From (inclusive): 4.5.0
Before (exclusive): 4.5.35
cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*
From (inclusive): 5.0.0
Before (exclusive): 5.1.10
cpe:2.3:a:eclipse:vert.x:5.2.0:*:*:*:*:*:*:*
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- https://github.com/eclipse-vertx/vertx-sql-client/security/advisories/GHSA-hm2j-xp3c-jff2
Vendor Advisory
- https://gitlab.eclipse.org/security/cve-assignment/-/work_items/354
Issue Tracking · Third Party Advisory