CVE-2026-40995: Spring Web Services · Improper Authentication
Affects Spring Web ServicesSource CVE Database V5
Not known to be exploited · CVSS 5.4 Medium · fixed in 5.0.1.1 : update Spring Web Services when convenient.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.0.1.1, 4.1.3.1, 4.0.19 +1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 11 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade Spring Web Services to 5.0.1.1, 4.1.3.1, 4.0.19 or 3.1.9.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| SpringSpring Web Services | Affected
| Fixed in
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| SpringSpring Web Services | Affected
| Fixed in
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| SpringSpring Web Services | Affected
| Fixed in
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| SpringSpring Web Services | Affected
| Fixed in
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AI-suggested
If you cannot patch yet, users should review their use of X509AuthenticationProvider and consider additional custom checks to enforce account lifecycle status. Monitoring for unusual authentication activity related to certificate-based logins may help detect exploitation attempts.
Description
X509AuthenticationProvider could issue a fully authenticated X509AuthenticationToken when a presented certificate mapped to UserDetails, without applying Spring Security's standard account lifecycle checks (disabled, locked, expired, or credentials-expired accounts). Affected versions: Spring Web Services 5.0.0 through 5.0.1; 4.1.0 through 4.1.3; 4.0.0 through 4.0.18; 3.1.0 through 3.1.8.