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. 
Source: PHP Group
Max CVSS
7.5
EPSS Score
0.05%
Published
2024-04-29
Updated
2024-06-10
In PHP 8.0.X before 8.0.28, 8.1.X before 8.1.16 and 8.2.X before 8.2.3, excessive number of parts in HTTP form upload can cause high resource consumption and excessive number of log entries. This can cause denial of service on the affected server by exhausting CPU resources or disk space. 
Source: PHP Group
Max CVSS
7.5
EPSS Score
0.06%
Published
2023-02-16
Updated
2023-05-17
In PHP 8.0.X before 8.0.28, 8.1.X before 8.1.16 and 8.2.X before 8.2.3, password_verify() function may accept some invalid Blowfish hashes as valid. If such invalid hash ever ends up in the password database, it may lead to an application allowing any password for this entry as valid.
Source: PHP Group
Max CVSS
7.7
EPSS Score
0.05%
Published
2023-03-01
Updated
2023-03-10
In PHP versions prior to 7.4.33, 8.0.25 and 8.1.12, when using imageloadfont() function in gd extension, it is possible to supply a specially crafted font file, such as if the loaded font is used with imagechar() function, the read outside allocated buffer will be used. This can lead to crashes or disclosure of confidential information. 
Source: PHP Group
Max CVSS
7.1
EPSS Score
0.08%
Published
2022-11-14
Updated
2024-04-02
In Archive_Tar before 1.4.14, symlinks can refer to targets outside of the extracted archive, a different vulnerability than CVE-2020-36193.
Source: MITRE
Max CVSS
7.1
EPSS Score
0.53%
Published
2021-07-30
Updated
2022-01-01
In PHP versions 7.3.x up to and including 7.3.31, 7.4.x below 7.4.25 and 8.0.x below 8.0.12, when running PHP FPM SAPI with main FPM daemon process running as root and child worker processes running as lower-privileged users, it is possible for the child processes to access memory shared with the main process and write to it, modifying it in a way that would cause the root process to conduct invalid memory reads and writes, which can be used to escalate privileges from local unprivileged user to the root user.
Source: PHP Group
Max CVSS
7.8
EPSS Score
0.15%
Published
2021-10-25
Updated
2022-10-29
In PHP versions 7.3.x below 7.3.27, 7.4.x below 7.4.15 and 8.0.x below 8.0.2, when using SOAP extension to connect to a SOAP server, a malicious SOAP server could return malformed XML data as a response that would cause PHP to access a null pointer and thus cause a crash.
Source: PHP Group
Max CVSS
7.5
EPSS Score
1.23%
Published
2021-02-15
Updated
2021-12-10

CVE-2020-36193

Known exploited
Tar.php in Archive_Tar through 1.4.11 allows write operations with Directory Traversal due to inadequate checking of symbolic links, a related issue to CVE-2020-28948.
Source: MITRE
Max CVSS
7.5
EPSS Score
92.37%
Published
2021-01-18
Updated
2022-01-01
CISA KEV Added
2022-08-25

CVE-2020-28949

Known exploited
Public exploit
Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks, and thus any other stream-wrapper attack (such as file:// to overwrite files) can still succeed.
Source: MITRE
Max CVSS
7.8
EPSS Score
96.12%
Published
2020-11-19
Updated
2022-01-06
CISA KEV Added
2022-08-25
Archive_Tar through 1.4.10 allows an unserialization attack because phar: is blocked but PHAR: is not blocked.
Source: MITRE
Max CVSS
7.8
EPSS Score
6.78%
Published
2020-11-19
Updated
2022-03-30
In PHP versions 7.2.x below 7.2.30, 7.3.x below 7.3.17 and 7.4.x below 7.4.5, if PHP is compiled with EBCDIC support (uncommon), urldecode() function can be made to access locations past the allocated memory, due to erroneously using signed numbers as array indexes.
Source: PHP Group
Max CVSS
7.5
EPSS Score
1.25%
Published
2020-04-27
Updated
2022-05-16
In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15 and 7.4.x below 7.4.3, when using file upload functionality, if upload progress tracking is enabled, but session.upload_progress.cleanup is set to 0 (disabled), and the file upload fails, the upload procedure would try to clean up data that does not exist and encounter null pointer dereference, which would likely lead to a crash.
Source: PHP Group
Max CVSS
7.5
EPSS Score
0.73%
Published
2020-02-27
Updated
2022-01-01
Oniguruma through 6.9.3, as used in PHP 7.3.x and other products, has a heap-based buffer over-read in str_lower_case_match in regexec.c.
Source: MITRE
Max CVSS
7.5
EPSS Score
0.49%
Published
2019-11-25
Updated
2022-08-29
In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0 on Windows, PHP link() function accepts filenames with embedded \0 byte and treats them as terminating at that byte. This could lead to security vulnerabilities, e.g. in applications checking paths that the code is allowed to access.
Source: PHP Group
Max CVSS
7.5
EPSS Score
0.18%
Published
2019-12-23
Updated
2022-12-14
When PHP EXIF extension is parsing EXIF information from an image, e.g. via exif_read_data() function, in PHP versions 7.1.x below 7.1.31, 7.2.x below 7.2.21 and 7.3.x below 7.3.8 it is possible to supply it with data what will cause it to read past the allocated buffer. This may lead to information disclosure or crash.
Source: PHP Group
Max CVSS
7.1
EPSS Score
0.20%
Published
2019-08-09
Updated
2023-02-28
When PHP EXIF extension is parsing EXIF information from an image, e.g. via exif_read_data() function, in PHP versions 7.1.x below 7.1.31, 7.2.x below 7.2.21 and 7.3.x below 7.3.8 it is possible to supply it with data what will cause it to read past the allocated buffer. This may lead to information disclosure or crash.
Source: PHP Group
Max CVSS
7.1
EPSS Score
0.20%
Published
2019-08-09
Updated
2023-02-28
An issue was discovered in the EXIF component in PHP before 7.1.27, 7.2.x before 7.2.16, and 7.3.x before 7.3.3. There is an Invalid Read in exif_process_SOFn.
Source: MITRE
Max CVSS
7.5
EPSS Score
0.29%
Published
2019-03-09
Updated
2022-04-05
An issue was discovered in the EXIF component in PHP before 7.1.27, 7.2.x before 7.2.16, and 7.3.x before 7.3.3. There is an uninitialized read in exif_process_IFD_in_MAKERNOTE because of mishandling the data_len variable.
Source: MITRE
Max CVSS
7.5
EPSS Score
0.48%
Published
2019-03-09
Updated
2022-04-05
An issue was discovered in the EXIF component in PHP before 7.1.27, 7.2.x before 7.2.16, and 7.3.x before 7.3.3. There is an uninitialized read in exif_process_IFD_in_MAKERNOTE because of mishandling the maker_note->offset relationship to value_len.
Source: MITRE
Max CVSS
7.5
EPSS Score
0.29%
Published
2019-03-09
Updated
2022-04-05
An issue was discovered in PHP before 7.1.27, 7.2.x before 7.2.16, and 7.3.x before 7.3.3. Due to the way rename() across filesystems is implemented, it is possible that file being renamed is briefly available with wrong permissions while the rename is ongoing, thus enabling unauthorized users to access the data.
Source: MITRE
Max CVSS
7.5
EPSS Score
0.37%
Published
2019-03-09
Updated
2019-06-03
An issue was discovered in PHP before 5.6.40, 7.x before 7.1.26, 7.2.x before 7.2.14, and 7.3.x before 7.3.1. xmlrpc_decode() can allow a hostile XMLRPC server to cause PHP to read memory outside of allocated areas in base64_decode_xmlrpc in ext/xmlrpc/libxmlrpc/base64.c.
Source: MITRE
Max CVSS
7.5
EPSS Score
1.14%
Published
2019-02-22
Updated
2019-06-18
An issue was discovered in PHP 7.x before 7.1.26, 7.2.x before 7.2.14, and 7.3.x before 7.3.2. dns_get_record misparses a DNS response, which can allow a hostile DNS server to cause PHP to misuse memcpy, leading to read operations going past the buffer allocated for DNS data. This affects php_parserr in ext/standard/dns.c for DNS_CAA and DNS_ANY queries.
Source: MITRE
Max CVSS
7.5
EPSS Score
60.63%
Published
2019-02-22
Updated
2019-06-18
In PHP before 5.6.39, 7.x before 7.0.33, 7.1.x before 7.1.25, and 7.2.x before 7.2.13, a buffer over-read in PHAR reading functions may allow an attacker to read allocated or unallocated memory past the actual data when trying to parse a .phar file. This is related to phar_parse_pharfile in ext/phar/phar.c.
Source: MITRE
Max CVSS
7.5
EPSS Score
0.58%
Published
2019-02-21
Updated
2019-05-22
ext/imap/php_imap.c in PHP 5.x and 7.x before 7.3.0 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty string in the message argument to the imap_mail function.
Source: MITRE
Max CVSS
7.5
EPSS Score
2.58%
Published
2018-12-07
Updated
2022-08-29
ext/standard/var_unserializer.c in PHP 5.x through 7.1.24 allows attackers to cause a denial of service (application crash) via an unserialize call for the com, dotnet, or variant class.
Source: MITRE
Max CVSS
7.5
EPSS Score
0.10%
Published
2018-11-20
Updated
2019-10-03
217 vulnerabilities found
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