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CVE-2026-27473

SPIP < 4.4.9 Stored Cross-Site Scripting via Syndicated Sites

5.1 MediumFix available

SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details.

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
Low
Integrity
Low
Availability
None

Exploit likelihood

0.30%Up 0.3 points since Feb 20, 2026
90%50%10%1%

What each source reports

CVE List Score used 5.1

SPIP < 4.4.9 Stored Cross-Site Scripting via Syndicated Sites

SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details.

Record
CVE-2026-27473
CVSS 4.0
5.1 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
CVSS 3.1
6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Updated
2026-11-02
EUVDEUVD-2026-8319 5.1

SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details.

Record
EUVD-2026-8319
CVSS 4.0
5.1 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-fgj6-7f58-836m 5.1

SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private...

SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details.

Record
GHSA-fgj6-7f58-836m
CVSS 4.0
5.1 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/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
6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
NVD 5.1

SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details.

Record
CVE-2026-27473
CVSS 4.0
5.1 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/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
6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSV 5.1

SPIP < 4.4.9 Stored Cross-Site Scripting via Syndicated Sites

SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details.

Record
CVE-2026-27473
CVSS 4.0
5.1 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Updated
2026-11-02
OSVDEBIAN-CVE-2026-27473 5.1

SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details.

Record
DEBIAN-CVE-2026-27473
CVSS 4.0
5.1 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/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
Updated
2026-11-02
OSVUBUNTU-CVE-2026-27473 5.1

SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details.

Record
UBUNTU-CVE-2026-27473
CVSS 4.0
5.1 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
CVSS 3.1
6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/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-2026-27473 is a medium vulnerability (CVSS 5.1) in Spip, published February 19, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.30%, the 23rd percentile. Fixed in spip 4.4.11+dfsg-0+deb13u1.

References

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