Login CSRF in Traccar OpenID Connect callback
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Tampering
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-352.
Summary
Traccar 5.7 through 6.16.0 contains a cross-site request forgery flaw (CWE-352) because the OpenID Connect callback never validates the OAuth state parameter. An attacker can induce a victim's browser to load the callback with the attacker's own authorization code, which logs the victim into the attacker's account. Data the victim enters meanwhile, such as registered devices, then lands in the attacker's account.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
Traccar 5.7 through 6.16.0 contains a cross-site request forgery vulnerability that allows attackers to log victims into attacker-controlled accounts because the OpenID Connect callback never validates the OAuth state parameter. Attackers can induce a victim's browser to load /api/session/openid/callback with their own authorization code, causing data the victim enters, such as registered devices, to land in the attacker's account.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for Traccar.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-11 Threatist record created from CVE-2026-108738
- 2026-10-11 Alias added: GHSA-jf89-8gjp-j4c9
- 2026-10-18 CISA SSVC decision points changed
References
Other 3
- https://github.com/traccar/traccar/blob/cfab560c79ee9c9eaa41c79c6df351e820d6284b/src/main/java/org/traccar/database/OpenIdProvider.java#L110-L198
- https://github.com/traccar/traccar/blob/cfab560c79ee9c9eaa41c79c6df351e820d6284b/src/main/java/org/traccar/api/resource/SessionResource.java#L175-L193
- https://github.com/traccar/traccar
More traccar vulnerabilities
- TI-2025-38099 Traccar Unauthenticated Local File Inclusion on Windows - Leakage of Traccar Config File CVSS 4.0HIGH 8.7
- TI-2024-20591 Traccar's unrestricted file upload vulnerability in device image upload could lead to remote code execution CVSS 3.1CRITICAL 9.7
- TI-2026-20749 Traccar Vulnerable to Authorization Code Theft via Open Redirect in OIDC Provider Endpoints CVSS 3.1HIGH 8.7
- TI-2026-20748 Traccar Vulnerable to Stored Cross-Site Scripting (XSS) via Malicious SVG File Upload CVSS 3.1HIGH 8.7
- TI-2024-16326 Traccar vulnerable to Path Traversal: 'dir/../../filename' and Unrestricted Upload of File with Dangerous Type CVSS 3.1HIGH 8.5
- TI-2026-70716 Weak password recovery in Traccar lets reset tokens act as sessions CVSS 4.0HIGH 7.6
Sources
- CVE-2026-108738 · CVE Program
- CVE-2026-108738 · NVD
- FIRST EPSS
- GHSA-jf89-8gjp-j4c9 · GitHub Advisory Database · CC BY 4.0
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