How severe is CVE-2026-27473?

CVE-2026-27473 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-27473 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27473?

CVE-2026-27473 affects Spip. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27473?

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

Does CVE-2026-27473 have an EU (EUVD) identifier?

Yes. CVE-2026-27473 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8319.

When was CVE-2026-27473 published?

CVE-2026-27473 was published on 2026-02-19 and last updated on 2026-06-17.

CVE-2026-27473

CVE-2026-27473 is a medium-severity vulnerability in Spip with a CVSS 3.x base score of 6.4. 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 6.4)
CVSS v4: 5.1
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8319
Weakness: CWE-79
Affected product: Spip
Published: 2026-02-19
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-27473?: 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.
How severe is CVE-2026-27473?: CVE-2026-27473 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-27473 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27473?: CVE-2026-27473 affects Spip. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27473?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-27473 have an EU (EUVD) identifier?: Yes. CVE-2026-27473 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8319.
When was CVE-2026-27473 published?: CVE-2026-27473 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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