redhat/php:8.3/php vulnerabilities

Latest redhat/php:8.3/php CVEs

Newest publication first

1. 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

   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...

2. 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

   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...

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

   Published 2026-09-25

   Medium·CVSS 4.3

   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...

4. 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

   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...

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

   Published 2026-09-25

   Low·CVSS 3.4

   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...

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

   Published 2026-09-25

   Medium·CVSS 5.9

   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...

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

   Published 2026-09-25

   Medium·CVSS 6.5

   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...

8. 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

   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...

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

   Published 2026-09-25

   Medium·CVSS 4.3

   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...

10. 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

    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...

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

    Published 2026-07-30

    High·CVSS 8.1

    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.

12. 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...

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

    Published 2026-05-10

    Medium·CVSS 6.3

    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...

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

    Published 2026-05-10

    Medium·CVSS 6.3

    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...

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

    Published 2026-05-10

    Low·CVSS 2.1

    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...

16. CVE-2025-14179 SQL injection in pdo_firebird via NUL bytes in quoted strings

    Published 2026-05-10

    High·CVSS 7.4

    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 PDO Firebird driver improperly handles NUL bytes when preparing SQL queries. During token-by-token query construction, a string token containing a NUL byte is copied via str...

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.