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.
CVE-2026-26223
This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory enrichment pending alignment with NVD CVSS.
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.1
- EG Score
- 6.1(low)
- EG Risk
- 32(Track)EG Risk 32/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity61% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 7%
- KEV
- Not listed
Published
February 19, 2026
Last Modified
June 17, 2026
References (3)
- disclosure@vulncheckhttps://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-8.html
- disclosure@vulncheckhttps://git.spip.net/spip/spip
- disclosure@vulncheckhttps://www.vulncheck.com/advisories/spip-cross-site-scripting-via-iframe-tags-in-private-area
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 6× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-08-01 04:16 UTCEPSS rescore
- 2026-07-30 16:27 UTCEPSS rescore
- 2026-07-30 01:30 UTCEPSS rescore
- 2026-07-28 15:36 UTCEPSS rescore
- 2026-07-27 13:26 UTCEG score recompute
- 2026-07-27 13:26 UTCGHSA enrichment
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-26223?
When was CVE-2026-26223 disclosed?
Is CVE-2026-26223 actively exploited?
What is the CVSS score of CVE-2026-26223?
How do I remediate CVE-2026-26223?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-26223
Is Your Infrastructure Affected by CVE-2026-26223?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.