How to Fix CVE-2026-2679: A3factura (Bundle Sibling)
By Sai Kiran Pandrala. Last verified: 2026-05-25.
CVE-2026-2679 is a sibling vulnerability in the same vendor advisory as CVE-2026-2677. Apply the same patched build and you close both. The technical detail below is what differs.
| Severity | 4.8 (Medium) |
|---|---|
| Actively exploited? | No public listing in CISA KEV |
| Affected | A3factura 4.111.2-rev.1 |
| Fixed in | Same patched build as CVE-2026-2677 |
| Type (CWE) | CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') |
What's different about CVE-2026-2679?
Reflected Cross-Site Scripting (XSS) on the A3factura web platform, in parameter 'customerName', in 'a3factura-app.wolterskluwer.es/#/incomes/salesInvoices' endpoint, which could allow an attacker to execute arbitrary code in the victim's browser.
How to fix CVE-2026-2679
Apply the patched build per the primary write-up: How to Fix CVE-2026-2677. All commands, verification steps, and rollback notes for A3factura are listed there.
Frequently asked questions
Does the CVE-2026-2677 patch close CVE-2026-2679?
Yes. Both CVEs are addressed by the same vendor patch. Applying the patched build closes the full bundle.
Is CVE-2026-2679 listed in CISA KEV?
No public KEV listing at the time of this writing.
Where is the official advisory?
See https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-a3factura-software
References
- Official vendor advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-a3factura-software
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-2679
- CISA KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
- Primary: How to Fix CVE-2026-2677
*Written by Sai Kiran Pandrala. Part of the A3factura bundle. Full procedure at how-to-fix-cve-2026-2677.*