CVE-2026-109619

RCE via stale global state

PHP has various global state that temporarily points into request memory. In some scenarios, global state may not be correctly reset, or may be repopulated after being reset. The global state may then refer to request memory even after it has been freed. Subsequent requests may read or branch on this stale state before it is fully initialized. Multiple strategies can trigger this condition and produce remote code execution (RCE).

CVSS 4.0 · 9.2 Critical EPSS 100.0% KEV · Listed

Vendors

Paloaltonetworks Php Redhat and 1 more

Products

Pan-os Panorama M-200 Panorama M-300 and 21 more

CVE-2026-109618

RCE via OOM corruption

PHP uses longjmp() for out-of-memory (OOM) errors to exit the current context and abort handling of the request. Some contexts may not properly account for this scenario and leave request memory in an uninitialized state before performing an allocation. The subsequent request cleanup procedure may read or branch on this memory. Multiple OOM strategies can consistently trigger this condition and lead to remote code execution (RCE).

CVSS 4.0 · 9.2 Critical EPSS 100.0% KEV · Listed

Vendors

Paloaltonetworks Php Redhat and 1 more

Products

Pan-os Panorama M-200 Panorama M-300 and 20 more

CVE-2026-91768

IPv6 ACL bypass in FastCGI listen.allowed_clients due to partial address comparison (memcmp 12 bytes)

The IPv6 branch of the FastCGI client access check compares only the first 12 bytes of a 16-byte IPv6 address, so listen.allowed_clients matches on a /96 prefix instead of the exact address. An attacker who can source an address sharing the first 96 bits with an allowed one passes the check and reaches the FastCGI endpoint.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Php Php Group

Products

Php Php

CVE-2026-92842

OOB read / info leak in convert.* stream filters when line-break-chars contains NUL

The convert.base64-encode, convert.quoted-printable-encode and convert.quoted-printable-decode stream filters accept a line-break-chars option whose length is tracked separately from the string itself. The filter constructors duplicate the value with pestrdup(), which stops at the first NUL byte, while keeping the original length. When the filter later emits a line break it copies the recorded length out of the truncated allocation, reading past its end and placing adjacent heap bytes into the filter output.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed

Vendors

Php Php Group

Products

Php Php

CVE-2026-91767

Heap-buffer-overflow in php_openssl_matches_wildcard_name on crafted server cert wildcard CN

php_openssl_matches_wildcard_name() in ext/openssl/xp_ssl.c underflows the length argument passed to memchr() when a TLS server certificate presents a wildcard name whose literal characters are together longer than the hostname being verified. A malicious server presenting such a certificate makes the PHP client read up to SIZE_MAX bytes past the end of a heap allocation. The path is reachable from any default client stream, because verify_peer_name is enabled by default.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Php Php Group

Products

Php Php

CVE-2026-93682

Out-of-bounds read in the HTTP stream wrapper when following a redirect with an empty Location header

When the HTTP stream wrapper follows a redirect and the response carries a Location header with an empty value, the redirect code reads one byte past the end of the heap buffer holding the location. The value of that out-of-bounds byte decides which redirect target is built, so a malicious server controls whether the client is sent to the host root or to the current directory.

CVSS 3.1 · 5.8 Medium EPSS < 1% KEV · Not listed

Vendors

Php Php Group Redhat

Products

Php Php Hummingbird

CVE-2025-14181

Integer overflow to buffer overflow in soap HTTP parsing

The SOAP HTTP client guards its response buffer growth with a check that relies on signed integer overflow, which is undefined behaviour and is not guaranteed to trigger. When the check is optimised away, a malicious SOAP server can make the client allocate a buffer far smaller than the data it then writes into it, producing a heap buffer overflow.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Php Php Group Redhat

Products

Php Php Hummingbird

CVE-2025-1218

Various packet overreads in mysqlnd_writeprotocol.c

The mysqlnd wire protocol parser reads fields out of server packets before checking that the packet still holds enough bytes for them. A malicious or compromised MySQL server can send a truncated packet and make the client read past the end of the packet buffer, which is undefined behaviour and can crash the process.

CVSS 3.1 · 3.4 Low EPSS < 1% KEV · Not listed

Vendors

Microsoft Php Php Group

Products

Windows Php Php

CVE-2026-17545

PHP on Windows: Reserved Device Names Are Not Rejected Before File/Stream I/O which can cause DoS

On Windows, PHP's filesystem and stream APIs do not reject reserved device names such as CON, PRN, AUX, NUL, COM1 to COM9, LPT1 to LPT9, CONIN$ and CONOUT$ when they appear as a component of a path. An attacker-controlled filename therefore reaches CreateFileW() and opens a device instead of the regular file the application expected, which can block or hang the request and exhaust worker processes.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft Php Php Group

Products

Windows Php Php

CVE-2026-6103

Phar TAR phar_tar_number() Integer Overflow - Archive Entry Injection

phar_tar_number() parses the octal size field of a TAR header into a uint32_t with no overflow check. The field is 11 octal digits wide and holds values up to 0x1FFFFFFFF, so a size above 0xFFFFFFFF silently wraps. The parser then skips the wrong number of data blocks and interprets attacker-controlled file content as the next TAR header, which lets a crafted archive inject entries that PharData reports and extracts as if they were genuine.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Php Php Group Redhat

Products

Php Php Hummingbird

CVE-2026-91765

SOAP: Unbounded Recursion in Server-Side cleanup_xml_node

cleanup_xml_node() in the SOAP XML parser recurses once per XML nesting level with no depth limit. An unauthenticated attacker can post a SOAP request containing tens of thousands of nested elements to any SoapServer endpoint, exhaust the stack and crash the process. The same unbounded recursion exists in the SOAP value decoder and in the WSDL node search helper.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Php Php Group Redhat

Products

Php Php Hummingbird

CVE-2026-91766

Cross-origin credential leak in HTTP stream wrapper redirects

When the http:// stream wrapper follows a redirect it forwards the user-supplied Authorization, Cookie and Proxy-Authorization headers unchanged, even when the redirect target is a different host, a different port, or a downgrade from HTTPS to HTTP. A server that can steer a redirect therefore receives credentials that were only meant for the original origin. This is the same class of issue that libcurl fixed in 7.58.0 ( CVE-2018-1000007 https://github.com/advisories/GHSA-g7x2-hrfp-pv5f ).

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed

Vendors

Php Php Group

Products

Php Php

CVE-2026-91769

TLS Hostname Verification Falls Back to CN After SAN Mismatch

PHP's OpenSSL stream peer verification checks the certificate's subjectAltName entries first and, whenever no entry matches, falls back to the Common Name. RFC 6125 requires the CN to be ignored once the certificate presents any service identity, so a certificate carrying a non-matching DNS SAN was still accepted when its CN matched the requested peer_name. A certificate trusted by the client for one name can therefore be used to impersonate another.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Php Php Group Redhat

Products

Php Php Hummingbird

CVE-2022-37454

XKCP: buffer overflow in the SHA-3 reference implementation

The Keccak XKCP SHA-3 reference implementation before fdc6fef has an integer overflow and resultant buffer overflow that allows attackers to execute arbitrary code or eliminate expected cryptographic properties. This occurs in the sponge function interface.

CVSS 3.1 · 9.8 Critical EPSS 7.4% KEV · Not listed

Vendors

Debian Extended Keccak Code Package Project Fedoraproject and 6 more

Products

Debian Linux Extended Keccak Code Package Fedora and 6 more

CVE-2019-11049

mail() may release string with refcount==1 twice

In PHP versions 7.3.x below 7.3.13 and 7.4.0 on Windows, when supplying custom headers to mail() function, due to mistake introduced in commit 78f4b4a2dcf92ddbccea1bb95f8390a18ac3342e, if the header is supplied in lowercase, this can result in double-freeing certain memory locations.

CVSS 3.1 · 6.5 Medium EPSS 4.2% KEV · Not listed

Vendors

Debian Fedoraproject Microsoft and 2 more

Products

Debian Linux Fedora Windows and 2 more

CVE-2019-11045

DirectoryIterator class silently truncates after a null byte

In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0, PHP DirectoryIterator class 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.

CVSS 3.1 · 3.7 Low EPSS 8.8% KEV · Not listed

Vendors

Canonical Debian Fedoraproject and 4 more

Products

Ubuntu Linux Debian Linux Fedora and 5 more

CVE-2019-11044

link() silently truncates after a null byte on Windows

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.

CVSS 3.1 · 3.7 Low EPSS 5.1% KEV · Not listed

Vendors

Fedoraproject Php Tenable

Products

Fedora Php Security Center

CVE-2019-11050

Use-after-free in exif parsing under memory sanitizer

When PHP EXIF extension is parsing EXIF information from an image, e.g. via exif_read_data() function, in PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0 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.

CVSS 3.1 · 4.8 Medium EPSS 7.6% KEV · Not listed

Vendors

Canonical Debian Fedoraproject and 4 more

Products

Ubuntu Linux Debian Linux Fedora and 5 more

CVE-2019-11046

Buffer underflow in bc_shift_addsub

In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0, PHP bcmath extension functions on some systems, including Windows, can be tricked into reading beyond the allocated space by supplying it with string containing characters that are identified as numeric by the OS but aren't ASCII numbers. This can read to disclosure of the content of some memory locations.

CVSS 3.1 · 3.7 Low EPSS 4.1% KEV · Not listed

Vendors

Canonical Debian Fedoraproject and 3 more

Products

Ubuntu Linux Debian Linux Fedora and 3 more

CVE-2026-17544

Out-of-bounds write in bccomp() via crafted operand and scale

Attacker-provided inputs to bccomp() could lead to an out-of-bounds write with stack and heap corruption in PHP versions from 8.4.* before 8.4.24 and from 8.5.* before 8.5.9.

CVSS 4.0 · 8.1 High EPSS < 1% KEV · Not listed

Vendors

Php Php Group

Products

Php Php