CVE-2024-2757
highpriority · track · 1EPSS 0.019 · 80 %ileDEEURUUSEPSS · scored 2026-10-23
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (23)
Products and version ranges known to be affected.
advisories (4)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2024-0867PHP: Mehrere SchwachstellenDeutsch2024-04-11csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in PHP ausnutzen, um beliebigen Programmcode auszuführen, Sicherheitsmaßnahmen zu umgehen oder einen Denial-of-Service-Zustand zu verursachen.
- BIT-libphp-2024-2757PHP mb_encode_mimeheader runs endlessly for some inputs2025-08-11vendor · osvUS
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.
- BIT-php-2024-2757PHP mb_encode_mimeheader runs endlessly for some inputs2024-05-14vendor · osvUS
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.
- BIT-php-min-2024-2757PHP mb_encode_mimeheader runs endlessly for some inputs2025-01-14vendor · osvUS
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.
also known as (7)
Other names and identifiers for this entity.
- CNNVD-202404-3497cnnvd
- EUVD-2024-27701enisa_euvd
- BDU:2024-03214fstec_bdu
- BIT-libphp-2024-2757osv
- BIT-php-2024-2757osv
- BIT-php-min-2024-2757osv
- GHSA-fjp9-9hwx-59fqosv
sources
Which sources assert this record, and when.
references (13)
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2024/04/12/11cnnvd
- https://cxsecurity.com/cveshow/CVE-2024-2757/cnnvd
- https://github.com/php/php-src/security/advisories/GHSA-fjp9-9hwx-59fqcnnvd
- https://security.netapp.com/advisory/ntap-20240510-0011/cnnvd
- https://vigilance.fr/vulnerability/PHP-overload-via-mb-encode-mimeheader-44057cnnvd
- https://www.php.net/downloads.phpPatchcnnvd
- http://www.openwall.com/lists/oss-security/2024/04/12/11enisa_euvd
- https://github.com/php/php-src/security/advisories/GHSA-fjp9-9hwx-59fqenisa_euvd
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