What is CVE-2019-3783?

CVE-2019-3783 is a high-severity vulnerability in Cloud Foundry Stratos, classified under Session Fixation. CVSS score: 8.8/10. Published 2019-03-07.

How severe is CVE-2019-3783?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Cloud Foundry Stratos

CVE-2019-3783

Cloud Foundry Stratos, versions prior to 2.3.0, deploys with a public default session store secret. A malicious user with default session store secret can brute force another user's current Stratos session, and act on behalf of that user.

Published 2019-03-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Cloud Foundry Stratos — versions All
Cloudfoundry Stratos

Weakness classification (CWE)

References

www.cloudfoundry.org/blog/cve-2019-3783 (Vendor Advisory)

Frequently asked questions

What is CVE-2019-3783?: CVE-2019-3783 is a high-severity vulnerability in Cloud Foundry Stratos, classified under Session Fixation. CVSS score: 8.8/10. Published 2019-03-07.
How severe is CVE-2019-3783?: High severity. CVSS v3 base score is 8.8 out of 10.