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CVE-2026-26345

SPIP < 4.4.8 Cross-Site Scripting in Public Area

8.6 HighFix available

SPIP before 4.4.8 contains a stored cross-site scripting (XSS) vulnerability in the public area triggered in certain edge-case usage patterns. The echapper_html_suspect() function does not adequately sanitize user-controlled content, allowing authenticated users with content-editing privileges (e.g., author-level roles and above) to inject malicious scripts. The injected payload may be rendered across multiple pages within the framework and execute in the browser context of other users, including administrators. Successful exploitation can allow attackers to perform actions in the security context of the victim user, including unauthorized modification of application state. This vulnerability is not mitigated by the SPIP security screen.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
Passive

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
Low

Exploit likelihood

0.21%Up 0.2 points since Feb 20, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.6

SPIP < 4.4.8 Cross-Site Scripting in Public Area

SPIP before 4.4.8 contains a stored cross-site scripting (XSS) vulnerability in the public area triggered in certain edge-case usage patterns. The echapper_html_suspect() function does not adequately sanitize user-controlled content, allowing authenticated users with content-editing privileges (e.g., author-level roles and above) to inject malicious scripts. The injected payload may be rendered across multiple pages within the framework and execute in the browser context of other users, including administrators. Successful exploitation can allow attackers to perform actions in the security context of the victim user, including unauthorized modification of application state. This vulnerability is not mitigated by the SPIP security screen.

Record
CVE-2026-26345
CVSS 4.0
8.6 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
EUVDEUVD-2026-7580 8.6

SPIP before 4.4.8 contains a stored cross-site scripting (XSS) vulnerability in the public area triggered in certain edge-case usage patterns. The echapper_html_suspect() function does not adequately sanitize user-controlled content, allowing authenticated users with content-editing privileges (e.g., author-level roles and above) to inject malicious scripts. The injected payload may be rendered across multiple pages within the framework and execute in the browser context of other users, including administrators. Successful exploitation can allow attackers to perform actions in the security context of the victim user, including unauthorized modification of application state. This vulnerability is not mitigated by the SPIP security screen.

Record
EUVD-2026-7580
CVSS 4.0
8.6 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-7wc5-wjpj-2r5j 2.1

SPIP before 4.4.8 allows Cross-Site Scripting (XSS) in the public area for certain edge-case...

SPIP before 4.4.8 allows Cross-Site Scripting (XSS) in the public area for certain edge-case usage patterns. The echapper_html_suspect() function does not adequately detect all forms of malicious content, permitting an attacker to inject scripts that execute in a visitor's browser. This vulnerability is not mitigated by the SPIP security screen.

Record
GHSA-7wc5-wjpj-2r5j
CVSS 4.0
2.1 LowCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
4.7 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
NVD 8.6

SPIP before 4.4.8 contains a stored cross-site scripting (XSS) vulnerability in the public area triggered in certain edge-case usage patterns. The echapper_html_suspect() function does not adequately sanitize user-controlled content, allowing authenticated users with content-editing privileges (e.g., author-level roles and above) to inject malicious scripts. The injected payload may be rendered across multiple pages within the framework and execute in the browser context of other users, including administrators. Successful exploitation can allow attackers to perform actions in the security context of the victim user, including unauthorized modification of application state. This vulnerability is not mitigated by the SPIP security screen.

Record
CVE-2026-26345
CVSS 4.0
8.6 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSV 8.6

SPIP < 4.4.8 Cross-Site Scripting in Public Area

SPIP before 4.4.8 contains a stored cross-site scripting (XSS) vulnerability in the public area triggered in certain edge-case usage patterns. The echapper_html_suspect() function does not adequately sanitize user-controlled content, allowing authenticated users with content-editing privileges (e.g., author-level roles and above) to inject malicious scripts. The injected payload may be rendered across multiple pages within the framework and execute in the browser context of other users, including administrators. Successful exploitation can allow attackers to perform actions in the security context of the victim user, including unauthorized modification of application state. This vulnerability is not mitigated by the SPIP security screen.

Record
CVE-2026-26345
CVSS 4.0
8.6 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Updated
2026-11-02
OSVDEBIAN-CVE-2026-26345 8.6

SPIP before 4.4.8 contains a stored cross-site scripting (XSS) vulnerability in the public area triggered in certain edge-case usage patterns. The echapper_html_suspect() function does not adequately sanitize user-controlled content, allowing authenticated users with content-editing privileges (e.g., author-level roles and above) to inject malicious scripts. The injected payload may be rendered across multiple pages within the framework and execute in the browser context of other users, including administrators. Successful exploitation can allow attackers to perform actions in the security context of the victim user, including unauthorized modification of application state. This vulnerability is not mitigated by the SPIP security screen.

Record
DEBIAN-CVE-2026-26345
CVSS 4.0
8.6 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-02
OSVUBUNTU-CVE-2026-26345 8.6

SPIP before 4.4.8 contains a stored cross-site scripting (XSS) vulnerability in the public area triggered in certain edge-case usage patterns. The echapper_html_suspect() function does not adequately sanitize user-controlled content, allowing authenticated users with content-editing privileges (e.g., author-level roles and above) to inject malicious scripts. The injected payload may be rendered across multiple pages within the framework and execute in the browser context of other users, including administrators. Successful exploitation can allow attackers to perform actions in the security context of the victim user, including unauthorized modification of application state. This vulnerability is not mitigated by the SPIP security screen.

Record
UBUNTU-CVE-2026-26345
CVSS 4.0
8.6 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
spip
Debian:13
before 4.4.11+dfsg-0+deb13u1, plus listed versions
4.4.10+dfsg-14.4.3+dfsg-14.4.3+dfsg-1+deb13u14.4.4+dfsg-14.4.5+dfsg-1
Show 4 moreShow less
4.4.6+dfsg-14.4.7+dfsg-14.4.8+dfsg-14.4.9+dfsg-1
4.4.11+dfsg-0+deb13u1
spip
Debian:14
before 4.4.9+dfsg-1, plus listed versions
4.4.3+dfsg-14.4.4+dfsg-14.4.5+dfsg-14.4.6+dfsg-14.4.7+dfsg-14.4.8+dfsg-1
4.4.9+dfsg-1
spip
Debian:13
From an advisory covering 8 CVEs
before 4.4.11+dfsg-0+deb13u1, plus listed versions
4.4.10+dfsg-14.4.3+dfsg-14.4.3+dfsg-1+deb13u14.4.4+dfsg-14.4.5+dfsg-1
Show 4 moreShow less
4.4.6+dfsg-14.4.7+dfsg-14.4.8+dfsg-14.4.9+dfsg-1
4.4.11+dfsg-0+deb13u1
spip
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
3.0.20-13.0.21-13.0.21-1ubuntu13.0.21-1ubuntu1+esm1
None known
spip
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
3.1.4-33.1.4-4~deb9u3build0.18.04.13.1.4-4~deb9u5build0.18.04.13.1.4-4~deb9u5ubuntu0.1~esm2
None known
spip
Ubuntu:Pro:20.04:LTS
All versions, plus listed versions
3.2.4-13.2.5-13.2.7-13.2.7-1ubuntu0.13.2.7-1ubuntu0.1+esm2
None known
spip
Ubuntu:22.04:LTS
All versions, plus listed versions
3.2.11-33.2.12-14.0.2-14.0.4-1
None known
spip
Ubuntu:24.04:LTS
All versions, plus listed versions
4.1.11+dfsg-14.1.12+dfsg-14.1.13+dfsg-14.1.15+dfsg-14.2.9+dfsg-2
None known
spip
Ubuntu:25.10
All versions, plus listed versions
4.3.8+dfsg-14.4.3+dfsg-1
None known
spip
Ubuntu:26.04:LTS
All versions, plus listed versions
4.4.3+dfsg-14.4.6+dfsg-14.4.7+dfsg-14.4.8+dfsg-14.4.9+dfsg-1
None known

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-26345 is a high vulnerability (CVSS 8.6) in Spip, published February 19, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 10th percentile. Fixed in spip 4.4.11+dfsg-0+deb13u1.

References

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