Detections
Analytics

Fedora 43 : php (2026-d755ca77c4)

critical Nessus Plugin ID 333260

Synopsis

The remote Fedora host is missing one or more security updates.

Description

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-d755ca77c4 advisory.

 **PHP version 8.4.24** (30 Jul 2026)

 **BCMath:**

 * Fixed [GHSA-x692-q9x7-8c3f](https://github.com/php/php-src/security/advisories/GHSA-x692-q9x7-8c3f) (Out-of-bounds write in bccomp()). (**CVE-2026-17544**) (Recep Asan)

 **Calendar:**

 * Fixed bug [GH-22602](https://github.com/php/php-src/issues/22602) (gregoriantojd() and juliantojd() integer overflow with INT_MAX year). (arshidkv12)

 **Date:**

 * Update timelib to 2022.17. (Derick)
 * Fixed bug [GH-19803](https://github.com/php/php-src/issues/19803) (Parsing a string with a single white space does create an error). (Derick)
 * Fixed Unix timestamps in February of the year 0 are misparsed with @-notation. (LukasGelbmann)
 * Fixed bug [GH-11310](https://github.com/php/php-src/issues/11310) (__debugInfo does nothing on userland classes extending Date classes). (Derick)

 **DBA:**

 * Fixed OOB read on malformed length field in dba flatfile handler. (alhudz)

 **DOM:**

 * Fixed bug [GH-22570](https://github.com/php/php-src/issues/22570) (Stack overflow when serializing a deeply nested Dom\XMLDocument). (iliaal)

 **Exif:**

 * Fixed bug [GH-11020](https://github.com/php/php-src/issues/11020) (exif_read_data() emits a spurious Illegal IFD size warning when an IFD is not followed by a next-IFD offset). (Eyp Can Akman)

 **Hash:**

 * Fixed bug [GH-18173](https://github.com/php/php-src/issues/18173) (ext/hash relies on implementation- defined malloc alignment). (iliaal)

 **Intl:**

 * Fixed Locale::lookup() and locale_lookup() to return NULL instead of the fallback locale when a language tag cannot be canonicalized. (Weilin Du)
 * Fixed memory leaks when calling Collator::__construct() or Spoofchecker::__construct() twice. (Weilin Du)
 * Fixed IntlChar methods leaving stale global error state after successful calls. (Xuyang Zhang)

 **ODBC:**

 * Fixed bug [GH-22668](https://github.com/php/php-src/issues/22668) (Heap buffer over-read when a column value exceeds the driver-reported display size). (iliaal)

 **OpenSSL:**

 * Fixed timeout for supplemental read at end of a blocking stream in SSL stream wrapper. (ilutov)

 **PDO_ODBC:**

 * Fixed bug [GH-20726](https://github.com/php/php-src/issues/20726) (Crash with ODBC connection pooling when the DSN carries no credentials). (iliaal)
 * Fixed bug [GH-22667](https://github.com/php/php-src/issues/22667) (Heap buffer over-read when a column value exceeds the driver-reported display size). (iliaal)
 * Fixed bug [GH-22666](https://github.com/php/php-src/issues/22666) (Heap buffer overflow when an output parameter value is longer than the declared maxlen). (iliaal)
 * Fixed bug [GH-22665](https://github.com/php/php-src/issues/22665) (Out-of-bounds write when the ODBC driver reports a diagnostic message length beyond the error buffer). (iliaal)

 **PGSQL:**

 * Fixed [GHSA-7qpv-r5mr-78m4](https://github.com/php/php-src/security/advisories/GHSA-7qpv-r5mr-78m4) (SQL injection via E'...' backslash breakout). (**CVE-2026-17543**) (ilutov)

 **Phar:**

 * Fixed inconsistent handling of the magic .phar directory. Paths such as /.phar remain protected, while non-magic paths that merely start with .phar are handled consistently across file and directory creation, copying, ArrayAccess, stream lookup, directory iteration and extraction. (Weilin Du)
 * Fixed [GHSA-vc5h-9ppw-p5f3](https://github.com/php/php-src/security/advisories/GHSA-vc5h-9ppw-p5f3) (Crash via recursive symlinks). (**CVE-2026-7260**) (Jakub Zelenka)

 **PHPDBG:**

 * Fixed bug [GH-17387](https://github.com/php/php-src/issues/17387) (Trivial crash in phpdbg lexer).
 (iliaal)
 * Fixed fleaked lowercased lookup keys in phpdbg_resolve_opline_break. (jorgsowa)
 * Fixed off-by-one in phpdbg_safe_class_lookup() causing class lookups to always fail during phpdbg's signal-safe interruption path. (jorgsowa)

 **Reflection:**

 * Fixed bug [GH-22324](https://github.com/php/php-src/issues/22324) (Ignore leading namespace separator in ReflectionParameter::__construct()). (jorgsowa)
 * Fixed bug [GH-22441](https://github.com/php/php-src/issues/22441) (ReflectionClass::hasProperty() and getProperty() ignore dynamic properties shadowing a private parent property). (iliaal)
 * Fixed bug [GH-22658](https://github.com/php/php-src/issues/22658) (ReflectionConstant::__toString() with a string value with null bytes truncates output). (DanielEScherzer)
 * Fixed bug [GH-22681](https://github.com/php/php-src/issues/22681) (Reflection*::__toString() truncates on null bytes). (DanielEScherzer)

 **Session:**

 * Fixed bug [GH-21314](https://github.com/php/php-src/issues/21314) (Different session garbage collector behavior between PHP 8.3 and PHP 8.5). (jorgsowa)

 **SPL:**

 * Fix class_parents for classes with leading slash in non-autoload mode. (jorgsowa)
 * Ignore leading back-slash in class_parents(), class_implements(), and class_uses(). (jorgsowa)
 * Fixed bug [GH-16217](https://github.com/php/php-src/issues/16217) (SplFileObject::fputcsv() on an uninitialized object segfaults). (iliaal)

 **Standard:**

 * Fixed bug [GH-22360](https://github.com/php/php-src/issues/22360) (convert.base64-encode corruption on incremental flush). (David Carlier)
 * Fixed bug [GH-22395](https://github.com/php/php-src/issues/22395) (base_convert() outputs at most 64 characters). (Weilin Du)
 * Fixed integer overflow in getimagesize() and getimagesizefromstring() when parsing an IFF chunk with a size of INT_MAX. (David Carlier, Weilin Du)
 * Fixed bug [GH-22678](https://github.com/php/php-src/issues/22678) (Use-after-free in array_multisort() when the comparator mutates the array being sorted). (azchin, iliaal)

 **Streams:**

 * Fixed bug [GH-22617](https://github.com/php/php-src/issues/22617) (persistent stream keys truncated at null bytes, causing distinct abstract unix domain sockets to share a resource). (David Carlier)



Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected php package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2026-d755ca77c4

Plugin Details

Severity: Critical

ID: 333260

File Name: fedora_2026-d755ca77c4.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 8/7/2026

Updated: 8/7/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.6

Percentile: 98.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-17544

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Threat Score: 8.9

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:fedoraproject:fedora:43, p-cpe:/a:fedoraproject:fedora:php

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/29/2026

Vulnerability Publication Date: 7/28/2026

Reference Information

CVE: CVE-2026-17543, CVE-2026-17544, CVE-2026-7260

FEDORA: 2026-d755ca77c4

IAVA: 2026-A-0814