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Vulnerability record · public intelligence
CVE-2026-77647
CRITICAL

CVE-2026-77647

Published Aug 20, 2026 · Updated Oct 23, 2026

Severity · CVSSCRITICAL · 9.8
Known exploitationNot listed
EPSS / likelihood2.29%
QFinch risk score60 / 100

Original summary

Normalized public record · Updated Oct 23, 2026

SPIP before 4.4.20 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is related to incorrect identification of <?php blocks, and var_export's mishandling of certain cases such as presence of a '<' character.

Publisher and source text is retained separately from QFinch interpretation.

QFinch assessment

SPIP before 4.4.20 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is related to incorrect identification of <?php blocks, and var_export's mishandling of certain cases such as presence of a '<' character.

Evidence: public source records

Affected products

Affected scope reported by the available public evidence
Affected package, product or rangeFix status
Consult the referenced vendor advisory for affected versions.Consult source advisory

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

  1. Confirm the affected product and reachable code path exist in your environment.
  2. Apply the vendor-supported patch or mitigation from the primary advisory.
  3. Rescan the exact deployed revision and retain verification evidence.
Review primary references

Evidence coverage

CVENVDEPSSMETASPLOIT
SSVC priority
IMMEDIATE
Confidence
60%
Aliases
None reported

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

  1. blog.spip.net ↗
  2. lists.debian.org ↗

Record history

Published Aug 20, 2026 · Last refreshed Oct 23, 2026