redhat/php8.4 vulnerabilities

Latest redhat/php8.4 CVEs

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1. CVE-2026-109619 RCE via stale global state

   Published 2026-10-21

   Critical·CVSS 9.2 EPSS 100.0% CISA KEV added 2026-10-26 Exploited in the wild PoC

   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 r...

2. CVE-2026-109618 RCE via OOM corruption

   Published 2026-10-21

   Critical·CVSS 9.2 EPSS 100.0% CISA KEV added 2026-10-26 Exploited in the wild Public exploit PoC

   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 cle...

3. CVE-2026-92842 OOB read / info leak in convert.* stream filters when line-break-chars contains NUL

   Published 2026-09-25

   Medium·CVSS 5.9 EPSS 0.28%

   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 th...

4. CVE-2026-91768 IPv6 ACL bypass in FastCGI listen.allowed_clients due to partial address comparison (memcmp 12 bytes)

   Published 2026-09-25

   Medium·CVSS 6.5 EPSS 0.38%

   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 passe...

5. CVE-2026-91769 TLS Hostname Verification Falls Back to CN After SAN Mismatch

   Published 2026-09-25

   Medium·CVSS 4.3 EPSS 0.16%

   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-m...

6. CVE-2026-91767 Heap-buffer-overflow in php_openssl_matches_wildcard_name on crafted server cert wildcard CN

   Published 2026-09-25

   Medium·CVSS 6.5 EPSS 0.11%

   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...

7. CVE-2025-1218 Various packet overreads in mysqlnd_writeprotocol.c

   Published 2026-09-25

   Medium·CVSS 5.9 EPSS 0.28%

   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 undefine...

8. CVE-2026-91766 Cross-origin credential leak in HTTP stream wrapper redirects

   Published 2026-09-25

   Medium·CVSS 5.9 EPSS 0.29%

   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 redi...

9. CVE-2026-91765 SOAP: Unbounded Recursion in Server-Side cleanup_xml_node

   Published 2026-09-25

   High·CVSS 7.5 EPSS 0.38%

   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 unb...

10. CVE-2025-14181 Integer overflow to buffer overflow in soap HTTP parsing

    Published 2026-09-25

    Medium·CVSS 6.5 EPSS 0.31%

    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 t...

11. CVE-2026-17545 PHP on Windows: Reserved Device Names Are Not Rejected Before File/Stream I/O which can cause DoS

    Published 2026-09-25

    Medium·CVSS 6.9 EPSS 0.37%

    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 devic...

12. CVE-2026-6103 Phar TAR phar_tar_number() Integer Overflow - Archive Entry Injection

    Published 2026-09-25

    Low·CVSS 3.3 EPSS 0.16%

    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 interpr...

13. CVE-2026-93682 Out-of-bounds read in the HTTP stream wrapper when following a redirect with an empty Location header

    Published 2026-09-25

    Medium·CVSS 5.8 EPSS 0.34%

    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...

14. CVE-2026-7260 Stack overflow in phar with circular symlinks

    Published 2026-07-30

    Medium·CVSS 5.4 EPSS 0.11%

    Circular symbolic links in phar archives could lead to unbounded recursion, exhausting the C stack and crashing the PHP process, in PHP versions from 8.2.* before 8.2.33, from 8.3.* before 8.3.33, from 8.4.* before 8.4.24, and from 8.5.* before 8.5.9.

15. CVE-2026-17544 Out-of-bounds write in bccomp() via crafted operand and scale

    Published 2026-07-30

    High·CVSS 8.1 EPSS 0.42%

    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.

16. CVE-2026-17543 SQL injection in ext-pgsql via E'...' backslash breakout

    Published 2026-07-30

    High·CVSS 8.1 EPSS 0.33%

    Improper escaping of backslashes in attacker-provided parameters would allow for trivial SQL injection in PHP versions from 8.2.* before 8.2.33, from 8.3.* before 8.3.33, from 8.4.* before 8.4.24, and from 8.5.* before 8.5.9.

17. CVE-2026-9672 libgd: buffer overflow when processing specially crafted GIF file

    Published 2026-07-26

    High·CVSS 8.1

    A flaw was found in libgd. Processing a specially crafted GIF file allows a remote attacker to trigger a buffer overflow, resulting in an application crash and a denial of service. Arbitrary code execution is possible in theory, but considered highly unlikely because standard ima...

18. CVE-2026-14355 ext/openssl: Memory corruption in openssl_encrypt with AES-WRAP-PAD

    Published 2026-07-03

    Medium·CVSS 5.3 EPSS 0.28%

    In PHP versions 8.2.* before 8.2.32, 8.3.* before 8.3.32, 8.4.* before 8.4.23, 8.5.* before 8.5.8, the AES-WRAP-PAD algorithm implementation in OpenSSL extension contains a buffer allocation flaw. The output buffer for the AES key-wrap-with-padding operation is sized from the pla...

19. CVE-2026-7263 DoS attack via DOMNode::C14N()

    Published 2026-05-10

    Medium·CVSS 6.3 EPSS 0.35%

    In PHP versions 8.4.* before 8.4.21 and 8.5.* before 8.5.6, DOMNode::C14N() method may process the XML data incorrectly, causing a circular linked list in the data structure representing the XML document. This may cause subsequent processing of the XML document to enter infinite...

20. CVE-2026-6104 Global buffer over-read in mb_convert_encoding() with attacker-supplied encoding

    Published 2026-05-10

    Medium·CVSS 6.3 EPSS 0.47%

    In PHP versions 8.4.* before 8.4.21 and 8.5.* before 8.5.6, when an encoding name containing an embedded NUL byte is passed to mb_convert_encoding() or related mbstring functions, the code incorrectly assumes that when strncasecmp() returns 0 it means the strings have the same le...

21. CVE-2026-7258 Out-of-bounds read in urldecode() on NetBSD

    Published 2026-05-10

    Medium·CVSS 6.3 EPSS 0.36%

    In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, some functions, including urldecode(), pass signed char to ctype functions (like isxdigit()). On the systems with default signed char and optimized table-lookup ctype functions...

22. CVE-2026-6722 Use-After-Free in SOAP using Apache map

    Published 2026-05-10

    Critical·CVSS 9.5 EPSS 0.89%

    In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the SOAP extension's object deduplication mechanism stores pointers to PHP objects in a global map without incrementing their reference counts. When an apache:Map node contains...

23. CVE-2026-7259 Null pointer dereference in php_mb_check_encoding() via mb_ereg_search_init()

    Published 2026-05-10

    Low·CVSS 2.1 EPSS 0.19%

    In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, a mismatch between encoding lists in Oniguruma and mbfl leads to a NULL pointer dereference, resulting in a segmentation fault and denial of service. The vulnerability is exploi...

24. CVE-2026-7261 SoapServer session-persisted object use-after-free via SOAP header fault

    Published 2026-05-10

    Medium·CVSS 6.3 EPSS 0.30%

    In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, when SoapServer is configured with SOAP_PERSISTENCE_SESSION, the handler object is persisted across requests via session storage. However, in the case SOAP requests results in a...

25. CVE-2026-7262 NULL pointer dereference in SOAP apache:Map decoder with missing <value>

    Published 2026-05-10

    Low·CVSS 2.9 EPSS 0.78%

    In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, when a SOAP server has a typemap configured, the decoding process contains a mistake which checks the wrong variable in case of missing value element. This leads to dereferences...

Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.