Pre-auth client crash via empty side-band payload
Published Aug 28, 2026 · Updated Aug 28, 2026
Integer underflow in GitoxideLabs gitoxide gix-packetline before 0.21.5 allows remote attackers to crash clients during fetches. TextRef removes the side-band identifier, then indexes d[d.len() - 1] to test for a newline without first checking whether the remaining payload is empty. A victim must clone or fetch from an attacker-influenced remote; the crafted packet aborts the client process but does not expose or alter data.
Summary
What happened
Integer underflow in GitoxideLabs gitoxide gix-packetline before 0.21.5 allows remote attackers to crash clients during fetches. TextRef removes the side-band identifier, then indexes d[d.len() - 1] to test for a newline without first checking whether the remaining payload is empty. A victim must clone or fetch from an attacker-influenced remote; the crafted packet aborts the client process but does not expose or alter data.
The record
- CVE
- CVE-2026-82250
- Published
- Aug 28, 2026
- Updated
- Aug 28, 2026
- Vendor
- GitoxideLabs
- Product
- gitoxide
- Classifications
- CWE-191, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 28, 2026CVE publishedPublication date reported by the CVE source.
- Aug 28, 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 <0.21.5
What conditions does exploitation require?
What is affected?
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-2vh6-hw4j-32ww malicious Git server PoCfunctional · validated
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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