Detections
Analytics
SCA: security update for phpoffice/phpspreadsheet (GHSA-hrmw-qprp-wgmc)
medium Tenable Self-Hosted Container Security Plugin ID 440957
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. The HTML writer skips
htmlspecialchars escaping when a cell's formatted value differs from the original value. When a cell has a
custom number format containing the text placeholder @ along with any additional literal characters (for
example ". @", "@ ", or "x@"), the formatter replaces @ with the cell value and adds the extra characters,
causing the formatted value to differ from the original and bypassing HTML escaping entirely. An attacker
who can control the cell value and number format of an uploaded spreadsheet that is later converted to
HTML and displayed to other users can achieve stored cross-site scripting. This issue is fixed in versions
5.7.0, 3.10.5, 2.4.5, 2.1.16, and 1.30.4. (CVE-2026-40296)
Solution
Update the phpoffice/phpspreadsheet library and its related packages to version 1.30.4 or later.See Also
Plugin Details
Severity: Medium
ID: 440957
Version: Revision 1.8
Type: Local
Family: SCA Checks
Published: 4/29/2026
Updated: 7/2/2026
Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Medium
Score: 5
Percentile: 94.39
Vendor
Vendor Severity: Medium
CVSS v2
Risk Factor: Medium
Base Score: 5.5
Temporal Score: 4.3
Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N
CVSS Score Source: CVE-2026-40296
CVSS v3
Risk Factor: Medium
Base Score: 5.4
Temporal Score: 4.9
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 4/28/2026
Vulnerability Publication Date: 4/28/2026
Reference Information
CVE: CVE-2026-40296
cwe: CWE-79