Disclosed
CVE-2024-2757
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.
Exploitation Probability (EPSS)
Low Priority0.63%
The Exploit Prediction Scoring System (EPSS) uses machine learning to estimate the probability that a vulnerability will be exploited in the wild within the next 30 days.
0% (Theoretical)100% (Certainty)
7-Day Exploitation Trend
Vulnerability Timeline
2 eventsApr 29, 2024
Vulnerability Disclosed
Published to component-level vulnerability database.
Nov 4, 2025
Last Updated
Record updated with new analysis or tags.
Threat Actor Attribution
PREMIUM INTELAssociated Groups:Lazarus Group, APT28
Ransomware Campaigns:LockBit 3.0, BlackCat
IoCs (Indicators):14 IPs, 3 Hashes
Remediation & Mitigation
SOLUTIONOfficial patches and mitigation steps are available for this vulnerability.
# Update Command
apt-get update && apt-get upgrade -y specific-package
# Verify installation
dpkg -l | grep package-name
apt-get update && apt-get upgrade -y specific-package
# Verify installation
dpkg -l | grep package-name
Affected Products
1 Total
php/phpAll Versions
References
http://www.openwall.com/lists/oss-security/2024/04/12/11Openwall
Mailing List
https://github.com/php/php-src/security/advisories/GHSA-fjp9-9hwx-59fqGitHub
ExploitVendor Advisory
https://security.netapp.com/advisory/ntap-20240510-0011/Netapp
Third Party Advisory
http://www.openwall.com/lists/oss-security/2024/04/12/11Openwall
Mailing List
Am I Vulnerable?
Check your domain or package.json for CVE-2024-2757 exposure.
Vulnerability Details
CVSS Base Score
7.5/ 10
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published Date
Apr 29, 2024
Last Modified
Nov 4, 2025
Need Manual Validation?
Automated scanners flag false positives. Get a manual pentest validation for this CVE.