CVE-2026-40994: Spring Web Services · Insecure Default
Affects Spring Web ServicesSource CVE Database V5
Not known to be exploited · CVSS 8.2 High · fixed in 5.0.1.1 : patch Spring Web Services soon.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 13% 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:N/UI:N/S:U/C:L/I:H/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, consider additional WS-Security validation controls or compensating controls to enforce BSP compliance externally if feasible.
Description
Wss4jSecurityInterceptor initialized its BSP (WS-I Basic Security Profile) compliance flag so that inbound validation disabled WSS4J BSP enforcement on RequestData. Services that validate WS-Security on the network could therefore accept messages that violate BSP rules, weakening protocol-level checks. 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.