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Vulnerability details: VCID-qbcv-7zaj-u7hw
Vulnerability ID VCID-qbcv-7zaj-u7hw
Aliases CVE-2026-26223
Summary SPIP before 4.4.8 allows cross-site scripting (XSS) in the private area via malicious iframe tags. The application does not properly sandbox or escape iframe content in the back-office, allowing an attacker to inject and execute malicious scripts. The fix adds a sandbox attribute to iframe tags in the private area. This vulnerability is not mitigated by the SPIP security screen.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.00065 https://api.first.org/data/v1/epss?cve=CVE-2026-26223
cvssv3.1 6.1 https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-8.html
cvssv4 5.1 https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-8.html
ssvc Track https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-8.html
cvssv3.1 6.1 https://git.spip.net/spip/spip
cvssv4 5.1 https://git.spip.net/spip/spip
ssvc Track https://git.spip.net/spip/spip
cvssv3.1 6.1 https://www.vulncheck.com/advisories/spip-cross-site-scripting-via-iframe-tags-in-private-area
cvssv4 5.1 https://www.vulncheck.com/advisories/spip-cross-site-scripting-via-iframe-tags-in-private-area
ssvc Track https://www.vulncheck.com/advisories/spip-cross-site-scripting-via-iframe-tags-in-private-area
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-26223
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-26223
Mise-a-jour-de-securite-sortie-de-SPIP-4-4-8.html https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-8.html
spip https://git.spip.net/spip/spip
spip-cross-site-scripting-via-iframe-tags-in-private-area https://www.vulncheck.com/advisories/spip-cross-site-scripting-via-iframe-tags-in-private-area
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-8.html
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:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N Found at https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-8.html
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:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-02-19T19:50:44Z/ Found at https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-8.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://git.spip.net/spip/spip
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:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N Found at https://git.spip.net/spip/spip
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:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-02-19T19:50:44Z/ Found at https://git.spip.net/spip/spip
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://www.vulncheck.com/advisories/spip-cross-site-scripting-via-iframe-tags-in-private-area
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:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N Found at https://www.vulncheck.com/advisories/spip-cross-site-scripting-via-iframe-tags-in-private-area
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:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-02-19T19:50:44Z/ Found at https://www.vulncheck.com/advisories/spip-cross-site-scripting-via-iframe-tags-in-private-area
Exploit Prediction Scoring System (EPSS)
Percentile 0.20261
EPSS Score 0.00065
Published At May 29, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-05-29T13:49:29.268975+00:00 Debian Oval Importer Import https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.6.0