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Echo: php-8.1: security update to 8.1.34+e1

critical Tenable Cloud Security Plugin ID 476636

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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 duplicate keys, processing the
 second entry overwrites the first in the temporary result map, freeing the original PHP object while its
 stale pointer remains in the map. A subsequent href reference to the freed node can copy the dangling
 pointer into the result. As PHP string allocations can reclaim the freed memory region, an attacker with
 control over the SOAP request body can exploit this use-after-free to achieve remote code execution.
 (CVE-2026-6722)

Solution

Update the php-8.1 library and its related packages to version 8.1.34+e1 or later.

See Also

https://access.redhat.com/errata/RHSA-2026:22142

https://access.redhat.com/errata/RHSA-2026:22143

https://access.redhat.com/errata/RHSA-2026:22305

https://access.redhat.com/errata/RHSA-2026:22649

https://access.redhat.com/errata/RHSA-2026:23388

https://access.redhat.com/errata/RHSA-2026:33449

https://access.redhat.com/errata/RHSA-2026:34354

https://advisory.echohq.com/cve/CVE-2026-6722

Plugin Details

Severity: Critical

ID: 476636

Version: Revision 1.1

Type: Local

Published: 10/22/2026

Updated: 10/22/2026

Risk Information

VPR

Risk Factor: High

Score: 7.6

Percentile: 98.21

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-6722

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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:U/RL:O/RC:C

CVSS v4

Risk Factor: Critical

Base Score: 9.5

Threat Score: 8.4

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/22/2026

Vulnerability Publication Date: 5/6/2026

Reference Information

CVE: CVE-2026-6722