Authenticated file disclosure via unrestricted cURL protocols
Published Jul 13, 2023 · Updated Nov 3, 2025
Information disclosure in affected Zabbix 5.0, 6.0, 6.2, and 6.4 server and proxy releases allows remote authenticated users to read files. The preprocessing HttpRequest object passes attacker-controlled URLs to libcurl without a protocol allowlist, so file URLs return files readable by the zabbix account. Reachability requires authenticated access that can define JavaScript preprocessing, and disclosure is limited to files accessible to the server or proxy process.
Summary
What happened
Information disclosure in affected Zabbix 5.0, 6.0, 6.2, and 6.4 server and proxy releases allows remote authenticated users to read files. The preprocessing HttpRequest object passes attacker-controlled URLs to libcurl without a protocol allowlist, so file URLs return files readable by the zabbix account. Reachability requires authenticated access that can define JavaScript preprocessing, and disclosure is limited to files accessible to the server or proxy process.
The record
- CVE
- CVE-2023-29450
- Published
- Jul 13, 2023
- Updated
- Nov 3, 2025
- Vendor
- Zabbix
- Product
- Zabbix
- Classifications
- CWE-200, CWE-552, T1005
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 13, 2023CVE publishedPublication date reported by the CVE source.
- Nov 3, 2025Record 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=5.0 <=5.0.31 changes=[{"at":"5.0.32rc1","status":"unaffected"}]
- Affected versionversion=6.0 <=6.0.13 changes=[{"at":"6.0.14rc1 (6.0.16 is recommended)","status":"unaffected"}]
- Affected versionversion=6.2 <=6.2.7 changes=[{"at":"6.2.8rc1","status":"unaffected"}]
- Affected versionversion=6.4 <=6.4.0rc1 changes=[{"at":"6.4.0rc2","status":"unaffected"}]
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
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Technologies
Your stack
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Your stack
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