What is CVE-2026-40985?

CVE-2026-40985 is a medium-severity vulnerability in Broadcom Spring Web Flow, classified under Improper Neutralization of Special Elements used in an Expression Language Statement (Expression Language Injection). CVSS score: 6.4/10. Published 2026-06-11.

How severe is CVE-2026-40985?

Medium severity. CVSS v3 base score is 6.4 out of 10.

RCE in Broadcom Spring Web Flow

CVE-2026-40985

Applications that configure the WebFlowELExpressionParser are vulnerable to the use of malicious Unified EL expressions. Affected versions: Spring Web Flow 4.0.0; 3.0.0 through 3.0.1; 2.5.0 through 2.5.1.

Vulnerability class: Log4Shell (CVE-2021-44228)

Published 2026-06-11 · last modified 2026-09-04.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (19.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Broadcom Spring Web Flow — versions 4.0.0
Spring Web Flow — versions 4.0.0, 3.0.0, 2.5.0

Weakness classification (CWE)

CWE-917 — Improper Neutralization of Special Elements used in an Expression Language Statement (Expression Language Injection)

References

spring.io/security/cve-2026-40985 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-40985?: CVE-2026-40985 is a medium-severity vulnerability in Broadcom Spring Web Flow, classified under Improper Neutralization of Special Elements used in an Expression Language Statement (Expression Language Injection). CVSS score: 6.4/10. Published 2026-06-11.
How severe is CVE-2026-40985?: Medium severity. CVSS v3 base score is 6.4 out of 10.