How severe is CVE-2026-26223?

CVE-2026-26223 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-26223 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-26223?

CVE-2026-26223 affects Spip. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-26223?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-26223 have an EU (EUVD) identifier?

Yes. CVE-2026-26223 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7582.

When was CVE-2026-26223 published?

CVE-2026-26223 was published on 2026-02-19 and last updated on 2026-06-17.

CVE-2026-26223

CVE-2026-26223 is a medium-severity vulnerability in Spip with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v4: 5.1
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-7582
Weakness: CWE-79
Affected product: Spip
Published: 2026-02-19
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-26223?: 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.
How severe is CVE-2026-26223?: CVE-2026-26223 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-26223 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-26223?: CVE-2026-26223 affects Spip. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-26223?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-26223 have an EU (EUVD) identifier?: Yes. CVE-2026-26223 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7582.
When was CVE-2026-26223 published?: CVE-2026-26223 was published on 2026-02-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:spip:spip:*:*:*:*:*:*:*:*

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