Evidence used
- No CISA KEV confirmation is currently recorded.
- EPSS is 0.24% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2026
CVE-2026-47887High confidence
Spring Framework Open Redirect in UrlFileNameViewController
Spring · Spring Framework
6.1MediumCVSS 3.1
Patch only the product branches with a verified fix
Fix availability varies by productMedium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 19 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
R
Open reassessment dashboard →Operational reassessment
Published severity in operational context
Published severityMedium→Operational priority:Medium, unchanged from published severity.unchanged
Compensating controls
- Apply the linked authoritative mitigation while planning the permanent fix.
- Restrict the affected network interface to trusted sources where business-safe.
- Monitor vendor guidance and exploitation sources for a material change.
Verification
- Confirm that the asset runs Spring Spring Framework and falls inside the recorded affected range.
- Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
- Validate exposure, authentication requirements and compensating controls in the actual environment.
- Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Remediation availability differs by product scope
Verified remediation exists for at least one product or source, but 19 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
- Red Hat Product Security: 15 affected or under-investigation product states without a fixed product state in the same current advisory
- Debian Security Tracker: 4 affected package states with no published fix
Distribution package intelligence
5 package statesRelease-specific package status
Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.
Package result overrides the generic status
BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 4 affected package states shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.
Repository candidate not checked
A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.
| Distribution release | Source package | Vendor state | Fixed version | Evidence |
|---|---|---|---|---|
| Debian trixietrixie · source | libspring-java | Affected, no fix publishedDebian currently tracks this release as open. | Not published in this feed | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian bookwormbookworm · source | libspring-java | Affected, no fix publishedDebian currently tracks this release as open. | Not published in this feed | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian forkyforky · source | libspring-java | Affected, no fix publishedDebian currently tracks this release as open. | Not published in this feed | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian sidsid · source | libspring-java | Affected, no fix publishedDebian currently tracks this release as open. | Not published in this feed | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Ubuntu 24.04 LTSnoble · esm-apps | libspring-java | Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing. | Not published in this feed | Canonical Ubuntu Security ↗Source updated 5 Oct 2026 |
Direct vendor intelligence
1 currentAuthoritative vendor CSAF and VEX advisories
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
CVE-2026-47887 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityorg.springframework/spring-webmvc: Spring Framework: Open redirect vulnerability in UrlFileNameViewController
The vendor explicitly identifies these products as affected by this CVE.
- spring-webmvc as a component of Red Hat build of Apache Camel - HawtIO 4
- resteasy-javadoc (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
- resteasy-javadoc (pki-deps:10.6) as a component of Red Hat Enterprise Linux 8
- resteasy.src (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
- resteasy.src (pki-deps:10.6) as a component of Red Hat Enterprise Linux 8
- resteasy (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
- resteasy (pki-deps:10.6) as a component of Red Hat Enterprise Linux 8
- pki-resteasy as a component of Red Hat Enterprise Linux 9
- pki-resteasy-client as a component of Red Hat Enterprise Linux 9
- pki-resteasy-core as a component of Red Hat Enterprise Linux 9
- pki-resteasy-jackson2-provider as a component of Red Hat Enterprise Linux 9
- pki-resteasy-servlet-initializer as a component of Red Hat Enterprise Linux 9
- Summary
- A flaw was found in Spring Framework. A Spring MVC application utilizing UrlFileNameViewController with an end-of-path mapping and no configured prefix is susceptible to an open redirect vulnerability. This could allow an attacker to redirect users to arbitrary malicious websites, potentially leading to phishing attacks or other social engineering exploits.
- Remediation
- Configure explicit prefixes for `UrlFileNameViewController` mappings, or enforce strict URL validation using an explicit path-prefix or custom view resolver to prevent unauthenticated arbitrary external redirects.
Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 19 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
Fix availability varies by product01
What, why and how
A Spring MVC application that uses UrlFileNameViewController that is mapped with an end-of-path, and does not have a configured prefix is vulnerable to an open redirect. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30 Spring Framework 5.3.0 - 5.3.49 Spring Framework 5.2.25.RELEASE and earlier
What
A Spring MVC application that uses UrlFileNameViewController that is mapped with an end-of-path, and does not have a configured prefix is vulnerable to an open redirect. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30 Spring Framework 5.3.0 - 5.3.49 Spring Framework 5.2.25.RELEASE and earlier
Why
The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.
How
An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
What
A Spring MVC application that uses UrlFileNameViewController that is mapped with an end-of-path, and does not have a configured prefix is vulnerable to an open redirect. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30 Spring Framework 5.3.0 - 5.3.49 Spring Framework 5.2.25.RELEASE and earlier
Why
The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.
How
An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation No confirmed evidence
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
Public PoC / exploit material None recorded
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.
- Likely attack path
- a network path → URL Redirection to Untrusted Site ('Open Redirect') → cause the confidentiality, integrity or availability impact described by the vendor
- Attack surface
- Network
- Privileges required
- None: unauthenticated exploitation is possible
- User interaction
- Required interaction required
- Attack complexity
- Low: no specialised conditions are recorded
- Security boundary
- Changed: exploitation can affect a different security authority
- Weakness
?
CWE means Common Weakness Enumeration: a standard category for the underlying weakness. - CWE-601 ↗
CWE-601: URL Redirection to Untrusted Site ('Open Redirect'). The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.
- CVSS vector
?
CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity. CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NCommon Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SChangedScope: The attack can affect a component governed by a different security authority.CLowConfidentiality impact: A successful attack can cause a limited loss.ILowIntegrity impact: A successful attack can cause a limited loss.ANoneAvailability impact: No direct loss is represented by this metric.- Post-exploitation / living off the land
- No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
03
Patch and workaround
Operational remediation based on structured source evidence.
- Status
?
Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change. - Fix availability varies by product
- Affected
- spring-webmvc as a component of Red Hat build of Apache Camel - HawtIO 4
- resteasy-javadoc (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
- resteasy-javadoc (pki-deps:10.6) as a component of Red Hat Enterprise Linux 8
- resteasy.src (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
- resteasy.src (pki-deps:10.6) as a component of Red Hat Enterprise Linux 8
- resteasy (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
- resteasy (pki-deps:10.6) as a component of Red Hat Enterprise Linux 8
- pki-resteasy as a component of Red Hat Enterprise Linux 9
- pki-resteasy-client as a component of Red Hat Enterprise Linux 9
- pki-resteasy-core as a component of Red Hat Enterprise Linux 9
- pki-resteasy-jackson2-provider as a component of Red Hat Enterprise Linux 9
- pki-resteasy-servlet-initializer as a component of Red Hat Enterprise Linux 9
- spring-webmvc as a component of Red Hat Fuse 7
- devspaces/openvsx-rhel9 as a component of Red Hat OpenShift Dev Spaces
- devspaces/pluginregistry-rhel9 as a component of Red Hat OpenShift Dev Spaces
- Action
- Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
- Workaround
- Configure explicit prefixes for `UrlFileNameViewController` mappings, or enforce strict URL validation using an explicit path-prefix or custom view resolver to prevent unauthenticated arbitrary external redirects.
04
Evidence and provenance
Published 27 Aug 2026 · Last source change 27 Aug 2026, 14:59 UTC · CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')
CVE recordCVE.org · 5.2
CVSS sourceCISA ADP
EPSS source FIRST · tracked since 2026-08-27
?
The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.European sourceENISA EUVD · EUVD-2026-66855
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD enriched
Core structured fields are present and their contributing authorities are shown above.
Material change intelligence
View recent updates ↗What changed after publication
- Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-47887 to remediation: access.redhat.com/CVE-2026-47887.Red Hat Product Security ↗
- Before
- remediation: access.redhat.com/CVE-2026-47887
- After
- remediation: access.redhat.com/CVE-2026-47887
- Remediation statusRemediation status changed from Awaiting fix to Mitigation available.Red Hat Product Security ↗
- Before
- Awaiting fix
- After
- Mitigation available
- Affected versionsThe structured affected or fixed version information changed.Red Hat Product Security ↗
- Before
- After
- spring-webmvc as a component of Red Hat build of Apache Camel - HawtIO 4; resteasy-javadoc (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; resteasy-javadoc (pki-deps:10.6) as a component of Red Hat Enterprise Linux 8; resteasy.src (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; resteasy.src (pki-deps:10.6) as a component of Red Hat Enterprise Linux 8; resteasy (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; resteasy (pki-deps:10.6) as a component of Red Hat Enterprise Linux 8; pki-resteasy as a component of Red Hat Enterprise Linux 9; pki-resteasy-client as a component of Red Hat Enterprise Linux 9; pki-resteasy-core as a component of Red Hat Enterprise Linux 9; pki-resteasy-jackson2-provider as a component of Red Hat Enterprise Linux 9; pki-resteasy-servlet-initializer as a component of Red Hat Enterprise Linux 9; spring-webmvc as a component of Red Hat Fuse 7; devspaces/openvsx-rhel9 as a component of Red Hat OpenShift Dev Spaces; devspaces/pluginregistry-rhel9 as a component of Red Hat OpenShift Dev Spaces
- ENISA EUVD mappingEUVD-2026-66855 was added to the official ENISA EUVD mapping for this CVE.ENISA EUVD ↗
- Before
- not recorded
- After
- {"euvdId":"EUVD-2026-66855"}
- Vendor guidanceAuthoritative vendor guidance changed: added vendor advisory: spring.io/cve-2026-47887.security@vmware.com ↗
- Before
- no authoritative guidance recorded
- After
- vendor advisory: spring.io/cve-2026-47887
- Catalogue recordCVE added to the BlackTree catalogue.CNA ↗
- SeveritySeverity changed from Unknown to Medium.CISA ADP ↗
- Before
- Unknown
- After
- Medium
- CVSS scoreCVSS score changed from not recorded to 6.1 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).CISA ADP ↗
- Before
- not recorded
- After
- 6.1 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
Technical terms and abbreviations used in this report
- CVE
- Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
- CVSS
- Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
- EPSS
- Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
- CWE
- Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
- CNA
- CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
- CISA ADP
- Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
- NVD
- National Vulnerability Database: NIST's enrichment service for CVE records.
- CERT / CSIRT
- A computer security incident response team that publishes warnings or coordinates incident response.
- PoC
- Proof of concept: public material that demonstrates or helps reproduce exploitation.
- CSAF
- Common Security Advisory Framework: a machine-readable format for security advisories.
- LoTL
- Living off the land: abuse of legitimate tools or system functions during an attack.