XXE in Amazon Advanced Jdbc Wrapper
CVE-2026-18061
Improper restriction of XML external entity references in the RemoteQueryCachePlugin in AWS Advanced JDBC Wrapper 3.3.0 through 4.2.0 might allow an actor with write access to the shared cache infrastructure to disclose sensitive files from application hosts that read cached query results, including stored database and IAM role credentials, via crafted XML data in a cached column value. To remediate this issue, users should upgrade to version 4.3.0 or later.
Vulnerability class: XXE (XML External Entity)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:L.
EPSS exploit prediction
EPSS: 0.005 (39.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
Weakness classification (CWE)
References
- ff89ba41-3aa1-4d27-914a-91399e9639e5 (Release Notes, patch, Vendor Advisory)
- ff89ba41-3aa1-4d27-914a-91399e9639e5 (vendor-advisory, Patch, Vendor Advisory)
- ff89ba41-3aa1-4d27-914a-91399e9639e5 (Vendor Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-18061?
- CVE-2026-18061 is a medium-severity vulnerability in Amazon Advanced Jdbc Wrapper, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 5.9/10. Published 2026-09-11.
- How severe is CVE-2026-18061?
- Medium severity. CVSS v3 base score is 5.9 out of 10.