CVE-2026-50547 InvoicePlane CVE debrief

Who should care

Defenders managing InvoicePlane installations should assess their exposure to this vulnerability and prioritize applying the patch provided in version 1.7.2. This is particularly important for environments where low-privileged users have influence over the e-invoice configuration.

Why it matters

CVE-2026-50547 is a local file inclusion vulnerability in InvoicePlane that allows a low-privileged attacker to include existing PHP files via traversal sequences. The vulnerability is patched in version 1.7.2, and defenders should verify their installations' exposure and apply the patch.

• Verification of InvoicePlane version and exposure to this vulnerability is necessary to prevent potential local file inclusion.
• Applying the patch in version 1.7.2 is crucial to prevent exploitation.
• Monitoring for suspicious activity related to e-invoice configuration changes is recommended.

Technical summary

The vulnerability exists in the Invoices::generate_xml() method of InvoicePlane, where a database-derived xml_id is appended to the XMLconfigs helper directory and included without validation. This allows for local file inclusion via traversal sequences by a low-privileged attacker who can influence the e-invoice configuration. The issue is patched in version 1.7.2. Defenders should verify their installations' exposure and apply the patch. The CVE record and source item provide details about the vulnerability, including its existence in versions prior to 1.7.2 of InvoicePlane and the fix in version 1.7.2.

Defensive priority

Defenders should prioritize verifying the exposure of InvoicePlane installations to this vulnerability and apply the patch provided in version 1.7.2. This involves checking the current version of InvoicePlane and updating it to 1.7.2 or later if necessary.

Recommended defensive actions

• Verify the current version of InvoicePlane and update it to 1.7.2 or later if necessary.
• Restrict access to the e-invoice configuration to prevent low-privileged attackers from influencing it.
• Monitor for any suspicious activity that could indicate exploitation of this vulnerability.
• 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 source item provide details about the vulnerability, including its existence in versions prior to 1.7.2 of InvoicePlane and the fix in version 1.7.2. However, the corpus does not establish versions, exploitation, impact, or remediation beyond the provided information, requiring verification from the supplied official sources.

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.