CVE-2024-2757
PHP mb_encode_mimeheader runs endlessly for some inputs
7.5
HIGH
CVSS 3.1
EPSS 0.63%
Description
In PHP 8.3.* before 8.3.5, function mb_encode_mimeheader() runs endlessly for some inputs that contain long strings of non-space characters followed by a space. This could lead to a potential DoS attack if a hostile user sends data to an application that uses this function.
How to fix CVE-2024-2757
To remediate CVE-2024-2757, upgrade the affected package to a fixed version below.
- —upgrade to 8.3.5 or later
- —upgrade to 8.3.5 or later
- —upgrade to 8.3.5 or later
Is CVE-2024-2757 being exploited?
Low — EPSS is 0.6%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- >= 8.3.0, < 8.3.5
- >= 8.3.0, < 8.3.5
- >= 8.3.0, < 8.3.5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |