[UPDATE] [medium] VMware Tanzu Spring Security: Multiple vulnerabilities
A remote, anonymous attacker can exploit multiple vulnerabilities in VMware Tanzu Spring Security to cause a Denial of Service, execute arbitrary code, redirect users to arbitrary websites, disclose information, and assume the identity of another user.
CSIRTS triage
- What
- Multiple vulnerabilities in Tanzu Spring Security allow denial of service, remote code execution, open redirect, information disclosure, and identity spoofing.
- Who is affected
- All users of VMware Tanzu Spring Security are affected.
- Urgency
- Medium priority; multiple attack vectors present including unauthenticated DoS and RCE despite medium rating.
- Action
- Apply patches for CVE-2026-40988, CVE-2026-40993, CVE-2026-41003, CVE-2026-41008, CVE-2026-41694, CVE-2026-41706, and CVE-2026-47838.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1869
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-409880.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-409930.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-410030.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-410080.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-416940.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-417060.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 12% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-478380.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-40988 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-40993 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-41003 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-41008 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-41694 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-41706 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-47838 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownNCSC-2026-0325 [1.00] [M/H] Vulnerabilities patched in Atlassian productsncsc-nl
- high[NEW] [high] Atlassian Bamboo, Bitbucket, Confluence, Fisheye, Crucible, Jira and Jira Service Management: Mul…cert-bund
- unknownMultiple vulnerabilities in Atlassian products (July 27, 2026)cert-fr-avis
- highGHSA-2q7c-5gjm-7q23: Spring Security SAML2 Service Provider is vulnerable to Deserialization of Untrusted Data…ghsa
- highGHSA-3pjj-qpw6-5fcm: Spring Security SAML2 Service Provider: RelyingPartyRegistration may run arbitrary code o…ghsa
- lowGHSA-ww38-37g9-m3q3: Spring Security SAML2 Service Provider: Decryption Oracle Vulnerability from Unsigned SAM…ghsa
- mediumGHSA-x2r2-rvhq-2mqv: Spring Security: Open Redirect via Unvalidated Post-Login Redirect URL Stored in CookieRe…ghsa
- highGHSA-m69x-pw9p-7j3q: Spring Security SAML2 Service Provider: Unbounded writer inflates the compressed SAML pay…ghsa
- mediumGHSA-4r8w-73jc-3m7q: Spring Security OAuth2 Authorization Server: Authorization endpoint performs insufficient…ghsa
Recent advisories for VMware Tanzu Spring
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- high[NEW] [high] VMware Tanzu Spring Framework: Multiple vulnerabilitiescert-bund · 2026-08-21
- high[NEW] [high] VMware Tanzu Spring Security: Multiple vulnerabilitiescert-bund · 2026-08-21
- medium[NEW] [medium] VMware Tanzu Spring Cloud: Multiple vulnerabilitiescert-bund · 2026-08-21
- medium[UPDATE] [medium] VMware Tanzu Spring Boot: Multiple vulnerabilitiescert-bund · 2026-08-10
- high[UPDATE] [high] VMware Tanzu Spring Framework: Multiple vulnerabilitiescert-bund · 2026-08-10
- high[UPDATE] [high] VMware Tanzu Spring Security: Multiple vulnerabilitiescert-bund · 2026-07-16
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