How severe is CVE-2026-34367?

CVE-2026-34367 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2026-34367 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34367?

CVE-2026-34367 affects Invoiceshelf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34367?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-34367 have an EU (EUVD) identifier?

Yes. CVE-2026-34367 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17618.

When was CVE-2026-34367 published?

CVE-2026-34367 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-34367

CVE-2026-34367 is a high-severity vulnerability in Invoiceshelf with a CVSS 3.x base score of 7.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: High (CVSS 3.x base score 7.6)
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17618
Weakness: CWE-918
Affected product: Invoiceshelf
Published: 2026-03-31
Last modified: 2026-06-17

Description

InvoiceShelf is an open-source web & mobile app that helps track expenses, payments and create professional invoices and estimates. Prior to version 2.2.0, a Server-Side Request Forgery (SSRF) vulnerability exists in the Invoice PDF generation module. User-supplied HTML in the invoice Notes field is passed unsanitised to the Dompdf rendering library, which will fetch any remote resources referenced in the markup. This can be triggered via the PDF preview and email delivery endpoints. This issue has been patched in version 2.2.0.

Frequently asked questions

What is CVE-2026-34367?: InvoiceShelf is an open-source web & mobile app that helps track expenses, payments and create professional invoices and estimates. Prior to version 2.2.0, a Server-Side Request Forgery (SSRF) vulnerability exists in the Invoice PDF generation module. User-supplied HTML in the invoice Notes field is passed unsanitised to the Dompdf rendering library, which will fetch any remote resources referenced in the markup. This can be triggered via the PDF preview and email delivery endpoints. This issue has been patched in version 2.2.0.
How severe is CVE-2026-34367?: CVE-2026-34367 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2026-34367 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34367?: CVE-2026-34367 affects Invoiceshelf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34367?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-34367 have an EU (EUVD) identifier?: Yes. CVE-2026-34367 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17618.
When was CVE-2026-34367 published?: CVE-2026-34367 was published on 2026-03-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:invoiceshelf:invoiceshelf:*:*:*:*:*:*:*:*

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