# CVE-2026-22751: Spring Spring Security TOCTOU race condition in JdbcOneTimeTokenService

Source: https://junglewise.ai/threats/cve-2026-22751-spring-spring-security-toctou-race-condition-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-21. Updated: 2026-07-17  
License: CC BY 4.0 with a link back

CVE-2026-22751 · Severity: medium · CVSS 4.8 · Published 2026-04-21

Spring Security, a framework used to secure Java-based web applications, contains a flaw in its one-time token login feature. When configured to store tokens in a database, a timing issue allows an attacker to potentially use a single-use token multiple times if requests are sent simultaneously. This could lead to unauthorized access or multiple active sessions using a credential that should have expired after one use.

Technologies: [org.springframework.security:spring-security-core (Maven)](https://junglewise.ai/threats/technologies/org-springframework-security-spring-security-core), [VMware Spring Security](https://junglewise.ai/threats/technologies/spring-security). Vendors: [Broadcom](https://junglewise.ai/threats/vendors/broadcom), [Maven](https://junglewise.ai/threats/vendors/maven), [VMware](https://junglewise.ai/threats/vendors/vmware).

## Quick answers

**Is CVE-2026-22751 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-22751 being exploited in the wild.

**How severe is CVE-2026-22751?** Medium severity, with a CVSS score of 4.8, published 21 April 2026.

**Which products and versions are affected?** Broadcom Spring Security Core 6.4.0 to 6.4.15, 6.5.0 to 6.5.9, 7.0.0 to 7.0.4; org.springframework.security:spring-security-core (Maven) ECOSYSTEM:introduced=6.5.0,fixed=6.5.10.

**Is there a fix for CVE-2026-22751?** Yes. org.springframework.security:spring-security-core (Maven): upgrade to 6.5.10 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-22751 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-22751?** Check whether you run Broadcom Spring Security Core, org.springframework.security:spring-security-core (Maven) or VMware Spring Security at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- org.springframework.security:spring-security-core (Maven): upgrade to 6.5.10 or later

  ```sh
  # set org.springframework.security:spring-security-core to 6.5.10 in your pom.xml or build.gradle
  ```


## Technical details

A Time-of-check Time-of-use (TOCTOU) race condition exists in Spring Security's JdbcOneTimeTokenService. The vulnerability occurs because the service does not properly validate the database deletion result during the token consumption process in a concurrent environment. A remote attacker can exploit this by sending simultaneous authentication requests using the same one-time token (OTT). If successful, this allows the attacker to bypass the single-use restriction and establish multiple authenticated sessions. The issue is resolved in versions 6.5.10 and 7.0.5.

## Affected products

- Spring Spring Security Core 6.4.0 to 6.4.15, 6.5.0 to 6.5.9, 7.0.0 to 7.0.4

## Identifiers

- CVE-2026-22751
- GHSA-x2wq-9x2f-fhj7

## Timeline

- 2026-04-21: disclosed
- 2026-04-21: advisory

## References

- [https://api.github.com/users/Seol-JY](https://api.github.com/users/Seol-JY)
- [https://github.com/Seol-JY](https://github.com/Seol-JY)
- [https://api.github.com/users/Seol-JY/gists%7B/gist_id%7D](https://api.github.com/users/Seol-JY/gists%7B/gist_id%7D)
- [https://api.github.com/users/Seol-JY/repos](https://api.github.com/users/Seol-JY/repos)
- [https://avatars.githubusercontent.com/u/70826982?v=4](https://avatars.githubusercontent.com/u/70826982?v=4)
- [https://api.github.com/users/Seol-JY/events%7B/privacy%7D](https://api.github.com/users/Seol-JY/events%7B/privacy%7D)

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