CVE-2026-118855

Description

Akaunting 3.3.0 contains a stored cross-site scripting vulnerability through invoice import. An authenticated user with invoice-creation permission can import HTML in an invoice status field. When another authenticated user opens that invoice's edit form, Akaunting renders the stored status in a hidden input with raw Blade output, allowing attacker-controlled markup to execute in the victim's Akaunting origin.

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

• 7.0CVSS 4.0, Highfrom the CNA (Fluid Attacks)CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N

What to do

• Restore a strict allowlist for invoice statuses during normal and spreadsheet-import validation, and change the hidden-input component to encode its value in attribute context. Upgrade to the vendor-fixed release once one is published.CNA solution statement
• Restrict invoice-import permission to trusted users and do not open edit pages for invoices imported from untrusted sources. Remove document rows whose status is not a supported state identifier. These measures are temporary and do not replace output encoding.CNA workaround statement

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

CAPEC-592 Stored XSS (CNA impact statement)

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

Timeline

1. 27 Oct 2026 Vulnerability discovered
2. 28 Oct 2026 Vendor contacted
3. 12 Nov 2026 Public disclosure
4. 12 Nov 2026 Published

Weakness

• CWE-79

References

• fluidattacks.comthird-party-advisory
• github.comproduct
• github.comtechnical-description
• github.comtechnical-description