CVE-2026-11906

IBM® Db2® federated server is vulnerable to a denial of service due to improper neutralization of special elements in the data query logic of XMLTable-derived columns by autheticated user

At a glance

Severity: MEDIUM 6.5
EPSS: EPSS 0.42 % · percentile 36 (2026-10-27)
State: PUBLISHED
Published: 2026-06-30
Updated: 2026-07-01
Assigner: ibm
NVD status: Analyzed

Description

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 for Linux, UNIX and Windows (includes Db2 Connect Server) could allow an authenticated user to cause a denial of service due to improper neutralization of special elements in the data query logic of XMLTable-derived columns.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	ibm
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	NVD · psirt@us.ibm.com (Secondary)

Weaknesses (CWE)

CWE-1284

European references

ENISA EUVD · EUVD-2026-40393
GCVE · GCVE-0-2026-11906

CERT-FR advisories

CERTFR-2026-AVI-1032 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2026-AVI-0986 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:ibm:db2:*:*:*:*:*:*:*:* ≥ 11.5.0 ≤ 11.5.9
cpe:2.3:a:ibm:db2:*:*:*:*:*:*:*:* ≥ 12.1.0 ≤ 12.1.4

Affected products

Product	Versions
IBM · Db2	affected 11.5.0 ≤ 11.5.9 ; affected 12.1.0 ≤ 12.1.4

References

https://www.ibm.com/support/pages/node/7277423

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD