CVE-2026-50631
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Apache CXF: OAuth2: TOCTOU Race Condition in Refresh Token Processing
A race condition in AbstractOAuthDataProvider allows concurrent requests using the same Refresh Token to bypass single-use semantics and generate multiple valid Access Tokens, when 'recycleRefreshTokens' is set to false. A leaked refresh token can be replayed concurrently by multiple attackers or threads. Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fixes this issue.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Apache CXF
- Vendor
- Apache Software Foundation
- Product
- Apache CXF
- Platforms
- Unknown
- Default status
unaffected- Package
- org.apache.cxf:cxf-rt-rs-security-oauth2
- Package collection
- https://repo.maven.apache.org/maven2
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.2.0 | affected | semver | 4.2.2 | Unavailable | None listed |
| 4.0.0 | affected | semver | 4.1.7 | Unavailable | None listed |
| 0 | affected | semver | 3.6.12 | Unavailable | None listed |