Detections
Analytics

SCA: security update for phpoffice/phpspreadsheet (GHSA-xh5m-36r6-47m3)

high Tenable Cloud Security Plugin ID 445211

Description

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

 - PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. In versions 4.0.0 through
 5.8.0, 3.3.0 through 3.10.6, 2.2.0 through 2.4.6, 2.0.0 through 2.1.17, and all releases up to and
 including 1.30.5, the OLE reader follows sector chains from attacker-controlled XLS/OLE metadata without
 detecting cycles or enforcing a maximum chain length. A tiny malformed .xls/OLE file can set the small-
 block depot sector chain to point back to itself. During normal XLS detection, OLERead::read() appends the
 same sector data repeatedly until the PHP process exhausts memory. This is reachable from
 Reader\Xls::canRead() and therefore from automatic spreadsheet type detection. Applications that accept
 attacker-controlled spreadsheet uploads can suffer denial of service from a very small file. This issue
 has been fixed in versions 5.8.1, 3.10.7, 2.4.7, 2.1.18 and 1.30.6. (CVE-2026-59933)

Solution

Update the phpoffice/phpspreadsheet library and its related packages to version 1.30.6 or later.

See Also

https://github.com/advisories/GHSA-xh5m-36r6-47m3

Plugin Details

Severity: High

ID: 445211

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 7/23/2026

Updated: 7/29/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.94

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-59933

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/23/2026

Vulnerability Publication Date: 7/23/2026

Reference Information

CVE: CVE-2026-59933