Arbitrary file reads via trusted-directory symlinks
Published Aug 7, 2026 · Updated Aug 7, 2026
Path traversal in Smarty before 4.5.7 and 5.0.0 through 5.8.1 allows attackers to read files via trusted-directory symlinks. The Security::_checkDir() method uses Smarty::_realpath(), which normalizes the requested path without following symlinks, before checking its directory. Exploitation requires Security mode, a symlink inside a trusted directory, and control of a template reference; the PHP process can disclose readable files outside the sandbox.
Summary
What happened
Path traversal in Smarty before 4.5.7 and 5.0.0 through 5.8.1 allows attackers to read files via trusted-directory symlinks. The Security::_checkDir() method uses Smarty::_realpath(), which normalizes the requested path without following symlinks, before checking its directory. Exploitation requires Security mode, a symlink inside a trusted directory, and control of a template reference; the PHP process can disclose readable files outside the sandbox.
The record
- CVE
- CVE-2026-62992
- Published
- Aug 7, 2026
- Updated
- Aug 7, 2026
- Vendor
- Smarty
- Product
- Smarty
- Classifications
- CWE-61, CWE-22, T1005
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Aug 7, 2026CVE publishedPublication date reported by the CVE source.
- Aug 7, 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=< 4.5.7
- Affected versionversion=>= 5.0.0, < 5.8.2
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
- Smarty symlink-escape regression testproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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