CVE-2026-55217 glpi-project CVE debrief

Who should care

GLPI administrators and users with low-privileged authenticated access should assess exposure and apply patches to prevent unauthorized access to knowledge base features. Additionally, security teams and vulnerability management teams should review the vulnerability and prioritize patching for GLPI instances. Operators and platform administrators should also be aware of the potential impact and take necessary actions to mitigate the vulnerability.

Why it matters

CVE-2026-55217 is a medium-severity vulnerability in GLPI that allows low-privileged authenticated users to create, update, or delete knowledge base comments and translations without authorization. Defenders should prioritize verifying exposure, applying patches, and monitoring GLPI instance logs.

• Defenders need to verify exposure and apply patches to prevent unauthorized access.
• Restricting access to knowledge base comments and translations is crucial.
• Monitoring GLPI instance logs for suspicious activity is necessary.

Technical summary

GLPI versions 0.85 until 10.0.26 and 11.0.8 are vulnerable to an authorization bypass issue, allowing low-privileged authenticated users to create, update, or delete knowledge base comments and translations. The vulnerability has a CVSS score of 5.3 and is classified as medium-severity. The issue is fixed in versions 11.0.8 and 10.0.26. Defenders should prioritize verifying exposure and applying patches for GLPI instances, focusing on restricting access to knowledge base comments and translations. The vulnerability does not require complex exploitation and can be addressed through patching.

Defensive priority

Defenders should prioritize verifying exposure and applying patches for GLPI instances, focusing on restricting access to knowledge base comments and translations.

Recommended defensive actions

• Verify GLPI instance exposure and apply patches to restrict unauthorized access to knowledge base comments and translations.
• Restrict access to GLPI knowledge base features for low-privileged authenticated users.
• Monitor GLPI instance logs for suspicious activity related to knowledge base comments and translations.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and NVD entry provide details on the authorization bypass issue in GLPI, with fixes available in versions 11.0.8 and 10.0.26. The vulnerability has a CVSS score of 5.3 and a medium severity rating. There are no known exploit details publicly available. Defenders should verify exposure and apply patches to restrict unauthorized access to knowledge base comments and translations. The CVE Program and NVD provide official records and assessments of the vulnerability.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.