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Vulnerability details: VCID-kmuj-5s89-eybd
Vulnerability ID VCID-kmuj-5s89-eybd
Aliases CVE-2024-56365
GHSA-jmpx-686v-c3wx
Summary PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. Versions prior to 3.7.0, 2.3.5, 2.1.6, and 1.29.7 are vulnerable to unauthorized reflected cross-site scripting in the constructor of the `Downloader` class. Using the `/vendor/phpoffice/phpspreadsheet/samples/download.php` script, an attacker can perform a cross-site scripting attack. Versions 3.7.0, 2.3.5, 2.1.6, and 1.29.7 contain a patch for the issue.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00905 https://api.first.org/data/v1/epss?cve=CVE-2024-56365
epss 0.00905 https://api.first.org/data/v1/epss?cve=CVE-2024-56365
epss 0.00905 https://api.first.org/data/v1/epss?cve=CVE-2024-56365
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-jmpx-686v-c3wx
cvssv3.1 7.1 https://github.com/PHPOffice/PhpSpreadsheet
cvssv4 8.3 https://github.com/PHPOffice/PhpSpreadsheet
generic_textual HIGH https://github.com/PHPOffice/PhpSpreadsheet
cvssv3.1 7.1 https://github.com/PHPOffice/PhpSpreadsheet/commit/700a80346be269af668914172bc6f4521982d0b4#diff-fbb0f53a5c68eeeffaa9ab35552c0b01740396f1a4045af5d2935ec2a62a7816
cvssv4 8.3 https://github.com/PHPOffice/PhpSpreadsheet/commit/700a80346be269af668914172bc6f4521982d0b4#diff-fbb0f53a5c68eeeffaa9ab35552c0b01740396f1a4045af5d2935ec2a62a7816
generic_textual HIGH https://github.com/PHPOffice/PhpSpreadsheet/commit/700a80346be269af668914172bc6f4521982d0b4#diff-fbb0f53a5c68eeeffaa9ab35552c0b01740396f1a4045af5d2935ec2a62a7816
ssvc Track https://github.com/PHPOffice/PhpSpreadsheet/commit/700a80346be269af668914172bc6f4521982d0b4#diff-fbb0f53a5c68eeeffaa9ab35552c0b01740396f1a4045af5d2935ec2a62a7816
cvssv3.1 7.1 https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jmpx-686v-c3wx
cvssv3.1_qr HIGH https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jmpx-686v-c3wx
cvssv4 8.3 https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jmpx-686v-c3wx
generic_textual HIGH https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jmpx-686v-c3wx
ssvc Track https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jmpx-686v-c3wx
cvssv3.1 7.1 https://nvd.nist.gov/vuln/detail/CVE-2024-56365
cvssv4 8.3 https://nvd.nist.gov/vuln/detail/CVE-2024-56365
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2024-56365
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2024-56365
https://github.com/PHPOffice/PhpSpreadsheet
https://nvd.nist.gov/vuln/detail/CVE-2024-56365
700a80346be269af668914172bc6f4521982d0b4#diff-fbb0f53a5c68eeeffaa9ab35552c0b01740396f1a4045af5d2935ec2a62a7816 https://github.com/PHPOffice/PhpSpreadsheet/commit/700a80346be269af668914172bc6f4521982d0b4#diff-fbb0f53a5c68eeeffaa9ab35552c0b01740396f1a4045af5d2935ec2a62a7816
GHSA-jmpx-686v-c3wx https://github.com/advisories/GHSA-jmpx-686v-c3wx
GHSA-jmpx-686v-c3wx https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jmpx-686v-c3wx
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N Found at https://github.com/PHPOffice/PhpSpreadsheet
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:L/SI:H/SA:L Found at https://github.com/PHPOffice/PhpSpreadsheet
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N Found at https://github.com/PHPOffice/PhpSpreadsheet/commit/700a80346be269af668914172bc6f4521982d0b4#diff-fbb0f53a5c68eeeffaa9ab35552c0b01740396f1a4045af5d2935ec2a62a7816
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:L/SI:H/SA:L Found at https://github.com/PHPOffice/PhpSpreadsheet/commit/700a80346be269af668914172bc6f4521982d0b4#diff-fbb0f53a5c68eeeffaa9ab35552c0b01740396f1a4045af5d2935ec2a62a7816
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2025-01-03T18:16:35Z/ Found at https://github.com/PHPOffice/PhpSpreadsheet/commit/700a80346be269af668914172bc6f4521982d0b4#diff-fbb0f53a5c68eeeffaa9ab35552c0b01740396f1a4045af5d2935ec2a62a7816
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N Found at https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jmpx-686v-c3wx
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:L/SI:H/SA:L Found at https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jmpx-686v-c3wx
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2025-01-03T18:16:35Z/ Found at https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-jmpx-686v-c3wx
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2024-56365
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:L/SI:H/SA:L Found at https://nvd.nist.gov/vuln/detail/CVE-2024-56365
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.76193
EPSS Score 0.00905
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-10T18:34:02.354096+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2024/56xxx/CVE-2024-56365.json 38.6.0