OAuth login interruption via premature callback release
Published Sep 14, 2026 · Updated Sep 14, 2026
Denial of service in Gitlawb OpenClaude 0.30.0 and earlier allows remote attackers to interrupt an active xAI OAuth login. The waitForCallback function in src/services/api/xaiOAuthCallback.ts mishandles the error argument and releases the callback resource before the pending login can reuse it. Exploitation requires an xAI OAuth flow in progress and victim interaction; the bounded consequence is termination and restart of that login.
Summary
What happened
Denial of service in Gitlawb OpenClaude 0.30.0 and earlier allows remote attackers to interrupt an active xAI OAuth login. The waitForCallback function in src/services/api/xaiOAuthCallback.ts mishandles the error argument and releases the callback resource before the pending login can reuse it. Exploitation requires an xAI OAuth flow in progress and victim interaction; the bounded consequence is termination and restart of that login.
The record
- CVE
- CVE-2026-90712
- Published
- Sep 14, 2026
- Updated
- Sep 14, 2026
- Vendor
- Gitlawb
- Product
- OpenClaude
- Classifications
- CWE-404, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 14, 2026CVE publishedPublication date reported by the CVE source.
- Sep 14, 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=0.1
- Affected versionversion=0.10
- Affected versionversion=0.11
- Affected versionversion=0.12
- Affected versionversion=0.13
- Affected versionversion=0.14
- Affected versionversion=0.15
- Affected versionversion=0.16
- Affected versionversion=0.17
- Affected versionversion=0.18
- Affected versionversion=0.19
- Affected versionversion=0.2
- Affected versionversion=0.20
- Affected versionversion=0.21
- Affected versionversion=0.22
- Affected versionversion=0.23
- Affected versionversion=0.24
- Affected versionversion=0.25
- Affected versionversion=0.26
- Affected versionversion=0.27
- Affected versionversion=0.28
- Affected versionversion=0.29
- Affected versionversion=0.3
- Affected versionversion=0.30.0
- Affected versionversion=0.4
- Affected versionversion=0.5
- Affected versionversion=0.6
- Affected versionversion=0.7
- Affected versionversion=0.8
- Affected versionversion=0.9
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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
- OpenClaude 0.27.0 denial-of-service proof of conceptproof of concept · unverified
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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