CVE-2013-4556

CVE-2013-4556 is a medium-severity vulnerability in Spip with a CVSS 2.0 base score of 4.3. 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 2.0 base score 4.3)
• EPSS exploit prediction: 2% (80th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-79
• Affected product: Spip
• Published: 2013-11-18
• Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in the author page (prive/formulaires/editer_auteur.php) in SPIP before 2.1.24 and 3.0.x before 3.0.12 allows remote attackers to inject arbitrary web script or HTML via the url_site parameter.

Frequently asked questions

What is CVE-2013-4556?

Cross-site scripting (XSS) vulnerability in the author page (prive/formulaires/editer_auteur.php) in SPIP before 2.1.24 and 3.0.x before 3.0.12 allows remote attackers to inject arbitrary web script or HTML via the url_site parameter.

How severe is CVE-2013-4556?

CVE-2013-4556 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2013-4556 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4556?

CVE-2013-4556 primarily affects Spip. In total, 58 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-4556?

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

When was CVE-2013-4556 published?

CVE-2013-4556 was published on 2013-11-18 and last updated on 2026-06-16.

References

• http://core.spip.org/projects/spip/repository/revisions/20879
• http://core.spip.org/projects/spip/repository/revisions/20880
• http://secunia.com/advisories/55551
• http://www.openwall.com/lists/oss-security/2013/11/10/4
• http://www.securitytracker.com/id/1029317
• http://www.spip.net/fr_article5646.html
• http://www.spip.net/fr_article5648.html
• https://www.debian.org/security/2013/dsa-2794

Affected products (58)

• cpe:2.3:a:spip:spip:*:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.7:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.8:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.9:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.10:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.11:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.12:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.13:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.14:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.15:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.16:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.17:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.18:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.19:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.20:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.21:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.0.22:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.1.4:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.1.5:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.1.6:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.1.7:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.1.8:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.1.9:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.1.10:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.1.11:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.1.12:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.1.13:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.1.14:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.1.15:*:*:*:*:*:*:*
• cpe:2.3:a:spip:spip:2.1.16:*:*:*:*:*:*:*

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