User impersonation via DPoP proof cache eviction
Published Aug 25, 2026 · Updated Aug 25, 2026
Authentication bypass in Spring Security 6.5.0 through 6.5.11, 7.0.0 through 7.0.6, and 7.1.0 allows remote attackers to impersonate users. DPoPProofJwtDecoderFactory stores used jti claims in a size-limited cache, so dummy requests evict an intercepted proof's replay marker. Exploitation requires an intercepted valid DPoP proof and enough requests to evict its entry; replay then grants the victim's access.
Summary
What happened
Authentication bypass in Spring Security 6.5.0 through 6.5.11, 7.0.0 through 7.0.6, and 7.1.0 allows remote attackers to impersonate users. DPoPProofJwtDecoderFactory stores used jti claims in a size-limited cache, so dummy requests evict an intercepted proof's replay marker. Exploitation requires an intercepted valid DPoP proof and enough requests to evict its entry; replay then grants the victim's access.
The record
- CVE
- CVE-2026-41707
- Published
- Aug 25, 2026
- Updated
- Aug 25, 2026
- Vendor
- Spring
- Product
- Spring Security
- Classifications
- CWE-294, T1557
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 25, 2026CVE publishedPublication date reported by the CVE source.
- Aug 25, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=6.5.0 <=6.5.11
- Affected versionversion=7.0.0 <=7.0.6
- Affected versionversion=7.1.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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