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PHP 8.4.x < 8.4.23

🗓️ 08 Jul 2026 00:00:00Reported by TenableType 
nessus
 nessus
🔗 www.tenable.com👁 5 Views

Remote PHP versions before 8.4.23 are vulnerable due to a buffer allocation flaw in AES-WRAP-PAD (CVE-2026-14355).

Related
Refs
Code
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-14355
3 Jul 202620:57
attackerkb
Circl
CVE-2026-14355
2 Jul 202614:39
circl
CVE
CVE-2026-14355
3 Jul 202620:57
cve
Cvelist
CVE-2026-14355 ext/openssl: Memory corruption in openssl_encrypt with AES-WRAP-PAD
3 Jul 202620:57
cvelist
Debian
[SECURITY] [DLA 4669-1] php8.2 security update
4 Jul 202614:23
debian
Debian
[SECURITY] [DSA 6377-1] php8.4 security update
4 Jul 202612:44
debian
Debian CVE
CVE-2026-14355
3 Jul 202620:57
debiancve
Tenable Nessus
Debian dla-4669 : libapache2-mod-php8.2 - security update
6 Jul 202600:00
nessus
Tenable Nessus
Debian dsa-6377 : libapache2-mod-php8.4 - security update
5 Jul 202600:00
nessus
Tenable Nessus
PHP 8.2.x < 8.2.32
3 Jul 202600:00
nessus
Rows per page
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(325694);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/09");

  script_cve_id("CVE-2026-14355");

  script_name(english:"PHP 8.4.x < 8.4.23");

  script_set_attribute(attribute:"synopsis", value:
"The version PHP running on the remote web server is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of PHP installed on the remote host is prior to 8.4.23. It is, therefore, affected by a vulnerability as
referenced in the Version 8.4.23 advisory.

  - 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 plaintext length without accounting
    for RFC 5649 expansion. This may cause OpenSSL to write beyond allocated memory, corrupting heap metadata
    and triggering application abort. (CVE-2026-14355)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"http://php.net/ChangeLog-8.php#8.4.23");
  script_set_attribute(attribute:"see_also", value:"https://github.com/php/php-src/issues/22187");
  script_set_attribute(attribute:"solution", value:
"Upgrade to PHP version 8.4.23 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-14355");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/07/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/08");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:php:php");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("php_version.nasl");
  script_require_keys("www/PHP", "installed_sw/PHP");
  script_require_ports("Services/www", 80);

  exit(0);
}

include('vcf.inc');
include('http.inc');

var port = get_http_port(default:80, php:TRUE);
var app_info = vcf::get_app_info(app:'PHP', port:port, webapp:TRUE);

var backported = get_kb_item('www/php/' + port + '/' + app_info.version + '/backported');
if ((report_paranoia < 2) && backported)
  audit(AUDIT_BACKPORT_SERVICE, port, 'PHP ' + app_info.version + ' install');

var constraints = [
  { 'min_version' : '8.4.0alpha1', 'fixed_version' : '8.4.23' }
];
vcf::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    severity:SECURITY_WARNING
);

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09 Jul 2026 00:00Current
6.2Medium risk
Vulners AI Score6.2
CVSS 3.15.3 - 5.6
EPSS0.00306
SSVC
5