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CVE Record

CVE-2026-26223: SPIP < 4.4.8 Cross-Site Scripting via Iframe Tags in Private Area

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.

MediumCVSS 6.1Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2026-26223 is a cross-site scripting issue in SPIP’s private back-office area before version 4.4.8. A malicious iframe could run script when a user views affected content. This can expose session-related data or enable actions in the user’s browser context, but it requires user interaction and is not listed as actively exploited.

Executive priority

Treat as a scheduled but important web application security update. Prioritize public-facing or business-critical SPIP sites with multiple back-office users. The risk is moderate, but compromise of administrator browser sessions could have broader operational impact.

Technical view

SPIP before 4.4.8 does not properly sandbox or escape iframe content in the private area. The published fix adds a sandbox attribute to iframe tags. CVSS 3.1 is 6.1: network reachable, low complexity, no privileges required, user interaction required, changed scope, low confidentiality and integrity impact, no availability impact.

Likely exposure

Exposure is most likely on SPIP deployments below 4.4.8 where users access the private area and view content containing iframe tags. The source bundle names SPIP 4.4.0 but the title and advisories state SPIP before 4.4.8, so teams should verify exact deployed versions.

Exploitation context

No CISA KEV entry or cited source indicates active exploitation. The issue is an XSS condition requiring a victim to interact with malicious or unsafe iframe content in the back-office. It is not mitigated by the SPIP security screen, according to the provided description.

Researcher notes

The public record describes the root cause and fix direction but does not provide detailed affected-version granularity beyond “before 4.4.8.” Validate against vendor release notes and repository changes. Avoid assuming exploitation in the wild without additional evidence.

Mitigation direction

  • Upgrade SPIP to version 4.4.8 or later.
  • Do not rely on the SPIP security screen for this issue.
  • Review the SPIP vendor advisory for deployment-specific upgrade guidance.
  • Restrict private-area access to trusted users until upgraded.

Validation and detection

  • Inventory SPIP instances and record exact versions.
  • Confirm affected systems are upgraded to 4.4.8 or later.
  • Review private-area content workflows involving iframe tags.
  • Check vendor advisory notes against your installed plugins and configuration.
Prepared
Confidence
high
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2026-26223 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.1 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
6.1CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N2.82.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.1Medium
CVSS 3.1 vector shape for CVE-2026-26223Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
SPIPSPIP4.4.0unaffected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.