Out-of-bounds Read Affecting php package, versions [8.4.0,8.4.21)[8.5.0,8.5.6)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-PHP-16624535
- published10 May 2026
- disclosed10 May 2026
- creditAkshayJainG
Introduced: 10 May 2026
CVE-2026-6104 (opens in a new tab)How to fix?
Upgrade php to version 8.4.21, 8.5.6 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Read in the mb_convert_encoding process when an encoding name containing an embedded NUL byte is provided. An attacker can cause a crash or disclose sensitive information by supplying specially crafted input to affected functions or settings.