Authorization code theft via unchecked redirect targets
Published Feb 23, 2026 · Updated Feb 23, 2026
Open redirect in Traccar Server 6.11.1 and earlier allows remote authenticated users to steal OAuth authorization codes. OidcResource.authorize uses an unvalidated redirect_uri as the code-delivery target, while OpenIdProvider.handleCallback lets that parameter override the configured callback URL. Exploitation requires OIDC configuration and user interaction with a crafted link, and stolen codes enable account takeover in integrated applications.
Summary
What happened
Open redirect in Traccar Server 6.11.1 and earlier allows remote authenticated users to steal OAuth authorization codes. OidcResource.authorize uses an unvalidated redirect_uri as the code-delivery target, while OpenIdProvider.handleCallback lets that parameter override the configured callback URL. Exploitation requires OIDC configuration and user interaction with a crafted link, and stolen codes enable account takeover in integrated applications.
The record
- CVE
- CVE-2026-25649
- Published
- Feb 23, 2026
- Updated
- Feb 23, 2026
- Vendor
- Traccar
- Product
- Traccar Server
- Classifications
- CWE-601, CWE-352, T1204.001, T1528
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 23, 2026CVE publishedPublication date reported by the CVE source.
- Feb 23, 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=<= 6.11.1
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
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GHSA-ccc7-4r59-4pp7 OIDC redirect proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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