CVE-2026-54596: ITFlow: Authenticated SQL Injection via recurring_invoice_frequency Parameter Enables Full Database Exfiltration
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-04 15:41 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
ITFlow provides an IT documentation, ticketing and accounting system for small managed service providers. Prior to version 26.07, an authenticated Technician or higher with access to at least one client invoice can inject SQL through the frequency parameter handled by agent/post/recurring_invoice.php. The handler passes recurring_invoice_frequency through sanitizeInput but interpolates it unquoted into DATE_ADD, allowing SQL syntax to escape the interval expression, assign additional INSERT columns, store subquery results in recurring_invoice_note, and expose those results through agent/recurring_invoice.php. The persisted recurring_invoice_frequency can execute again when Force Recurring uses it in a later UPDATE, allowing another legitimate user to trigger the second-order injection. This can expose password hashes, SMTP credentials, user records, and database metadata, modify database fields, and enable administrative takeover after credential cracking. This issue is fixed in version 26.07.
Description quoted from the CVE record (assigned by GitHub_M, published 2026-09-17).
Weakness: CWE-89: Improper Neutralization of Special Elements used in an SQL Command (‘SQL Injection’)
How it can be exploited
Exploitable over the network with low attack complexity needing low privileges and no user interaction. Impact: confidentiality high, integrity high, availability none. CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CISA assessment (SSVC): CISA assesses that a public proof of concept exists. Automatable: no. Technical impact: total.
Public exploit evidence (Exploit Observer)
Exploit Observer found 4 code repositories naming this CVE.
Code repositories that name a CVE are often scanners, copies or fakes, and some are malware. Read the code before running anything.
See all 6 references on Exploit Observer
Live scores
- EPSS
- 0.005
low predicted chance of attack - VEDAS
- 0.987
strong exploit evidence - On CISA KEV
- Not listed
- Detection rule
- Suricata
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| itflow-org itflow | version < 26.07 | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
How to fix it
No fixed version or vendor advisory is listed in the CVE record yet. Watch the vendor’s security page.
How to detect it
Suricata rules (network detection)
1 rule that alert on traffic matching this exploit: VEDAS CVE-2026-54596 ITFlow - SQL Injection via recurring invoice frequency parameter. Add them to your Suricata rule set and reload.
Show the rules
alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-54596 ITFlow - SQL Injection via recurring invoice frequency parameter"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/recurring_invoice.php"; nocase; fast_pattern; http.request_body; content:"frequency"; nocase; pcre:"/(?:\x27|%27|\bunion\b|\bselect\b|\bsleep\x28|\bupdatexml\x28|\bextractvalue\x28|information_schema|date_add\x28)/i"; classtype:web-application-attack; reference:cve,CVE-2026-54596; reference:url,https://www.exploit.observer/?keyword=CVE-2026-54596&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=itflow&match=exact; sid:1095407; rev:1;)
CVE-2026-54596.rules on GitHub
References
Other references
- https://github.com/itflow-org/itflow/security/advisories/GHSA-f9m3-qjc9-v27j (x_refsource_CONFIRM)
- https://github.com/itflow-org/itflow/pull/1284 (x_refsource_MISC)
- https://github.com/itflow-org/itflow/commit/721142629296ac8e335a79b32fd4d2df721234a8 (x_refsource_MISC)
- https://github.com/itflow-org/itflow/releases/tag/v26.07 (x_refsource_MISC)
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.
Supporting partners
