CVE-2026-40986
Spring Web Flow JS RemotingHandler renders non-HTML Response as HTML
Spring Web Flow's JavaScript RemotingHandler renders the body of an error response as HTML even when the response is not "text/html", which can result in a scripting attack in the user's browser if the error response from the server contains error details with input reflected from an attacker.
Affected versions: Spring Web Flow 4.0.0; 3.0.0 through 3.0.1; 2.5.0 through 2.5.1.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Spring Web Flow JS RemotingHandler renders non-HTML Response as HTML
Spring Web Flow's JavaScript RemotingHandler renders the body of an error response as HTML even when the response is not "text/html", which can result in a scripting attack in the user's browser if the error response from the server contains error details with input reflected from an attacker.
Affected versions: Spring Web Flow 4.0.0; 3.0.0 through 3.0.1; 2.5.0 through 2.5.1.
- Record
CVE-2026-40986- CVSS 3.1
- 4.8 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2026-36201
Spring Web Flow's JavaScript RemotingHandler renders the body of an error response as HTML even when the response is not "text/html", which can result in a scripting attack in the user's browser if the error response from the server contains error details with input reflected from an attacker.
Affected versions: Spring Web Flow 4.0.0; 3.0.0 through 3.0.1; 2.5.0 through 2.5.1.
- Record
EUVD-2026-36201- CVSS 3.1
- 4.8 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-hw5c-xm3c-v96w
Spring Web Flow JS RemotingHandler renders non-HTML Response as HTML
Spring Web Flow's JavaScript RemotingHandler renders the body of an error response as HTML even when the response is not "text/html", which can result in a scripting attack in the user's browser if the error response from the server contains error details with input reflected from an attacker.
Affected versions: Spring Web Flow 4.0.0; 3.0.0 through 3.0.1; 2.5.0 through 2.5.1.
- Record
GHSA-hw5c-xm3c-v96w- CVSS 3.1
- 4.8 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
Spring Web Flow's JavaScript RemotingHandler renders the body of an error response as HTML even when the response is not "text/html", which can result in a scripting attack in the user's browser if the error response from the server contains error details with input reflected from an attacker.
Affected versions: Spring Web Flow 4.0.0; 3.0.0 through 3.0.1; 2.5.0 through 2.5.1.
- Record
CVE-2026-40986- CVSS 3.1
- 4.8 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
Spring Web Flow JS RemotingHandler renders non-HTML Response as HTML
Spring Web Flow's JavaScript RemotingHandler renders the body of an error response as HTML even when the response is not "text/html", which can result in a scripting attack in the user's browser if the error response from the server contains error details with input reflected from an attacker.
Affected versions: Spring Web Flow 4.0.0; 3.0.0 through 3.0.1; 2.5.0 through 2.5.1.
- Record
CVE-2026-40986- CVSS 3.1
- 4.8 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVGHSA-hw5c-xm3c-v96w
Spring Web Flow JS RemotingHandler renders non-HTML Response as HTML
Spring Web Flow's JavaScript RemotingHandler renders the body of an error response as HTML even when the response is not "text/html", which can result in a scripting attack in the user's browser if the error response from the server contains error details with input reflected from an attacker.
Affected versions: Spring Web Flow 4.0.0; 3.0.0 through 3.0.1; 2.5.0 through 2.5.1.
- Record
GHSA-hw5c-xm3c-v96w- CVSS 3.1
- 4.8 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVROOT-APP-MAVEN-CVE-2026-40986 No score
CVE-2026-40986 in io.root.org.springframework.webflow:spring-js-resources - Patched by Root
Root has patched CVE-2026-40986 in the io.root.org.springframework.webflow:spring-js-resources package for Root:Maven. Multiple fixed versions available.
- Record
ROOT-APP-MAVEN-CVE-2026-40986- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.springframework.webflow:spring-webflowMaven |
4.0.0 to 4.0.0 | 4.0.1 |
org.springframework.webflow:spring-webflowMaven |
3.0.0 to 3.0.1 | 3.0.2 |
org.springframework.webflow:spring-webflowMaven |
through 2.5.1 | None known |
org.springframework.webflow:spring-webflowMaven |
4.0.0 up to 4.0.1 | 4.0.1 |
org.springframework.webflow:spring-webflowMaven |
3.0.0 up to 3.0.2, plus listed versions 3.0.1 |
3.0.2 |
org.springframework.webflow:spring-webflowMaven |
through 2.5.1, plus listed versions 2.0.6.RELEASE2.0.7.RELEASE2.0.8.RELEASE2.0.9.RELEASE2.1.0.RELEASE Show 18 moreShow less2.1.1.RELEASE2.2.0.RELEASE2.2.1.RELEASE2.3.0.RELEASE2.3.1.RELEASE2.3.2.RELEASE2.3.3.RELEASE2.3.4.RELEASE2.4.0.RELEASE2.4.1.RELEASE2.4.2.RELEASE2.4.4.RELEASE2.4.5.RELEASE2.4.6.RELEASE2.4.7.RELEASE2.4.8.RELEASE2.5.0.RELEASE2.5.1.RELEASE |
None known |
io.root.org.springframework.webflow:spring-js-resourcesRoot:Maven |
before 3.0.1-root.io.1 | 3.0.1-root.io.1 |
org.springframework.webflow:spring-js-resourcesRoot:Maven |
before 3.0.1-aikido.1 | 3.0.1-aikido.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-40986 is a medium vulnerability (CVSS 4.8) in Broadcom Spring Web Flow, published June 11, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 10th percentile. Fixed in org.springframework.webflow:spring-webflow 4.0.1.