CVE-2026-45545 Nextcloud: SQL Injection in Column Type Parameter Allows Arbitrary SQL Execution
Authenticated attackers can execute arbitrary SQL queries via the Tables app, allowing database information extraction or modification.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-45545?
CVE-2026-45545 is a high-severity SQL injection vulnerability in nextcloud security-advisories, published on 1 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Nextcloud is an open source content collaboration platform. From versions 0.7.0 to before 0.7.7, 0.8.0 to before 0.8.10, 0.9.0 to before 0.9.8, and 1.0.0 to before 1.0.4, an authenticated attacker with access to the Tables app may be able to execute arbitrary up to 20 bytes long SQL queries, through a stored injection. With carefully crafted input it is possible to break out of the length limitation. The attacker could use this to extract information from the database, or modify data. This issue has been patched in versions 0.7.7, 0.8.10, 0.9.8, 1.0.4, and 2.0.0.
Weakness: CWE-89
Which versions are affected by CVE-2026-45545?
It affects 1 product.
Products include Nextcloud Tables.
How do I fix CVE-2026-45545?
No fix has been published for CVE-2026-45545 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-45545 being exploited?
There is no known exploitation of CVE-2026-45545 in the wild and no public exploit code.
Other vulnerabilities in nextcloud security-advisories
- CVE-2026-45722 Nextcloud: Tables app allows limited SQLi in ORDER BY with malicious sort order argument for Table Views
- CVE-2025-66551 Nextcloud Tables is missing an ownership check which allows moving columns into tables of other users
- CVE-2024-52511 Nextcloud Tables has an Authorization Bypass Through User-Controlled Key in Tables
- CVE-2026-45544 Nextcloud: Information Disclosure of view filter metdata via Broken Sensitive Data Masking in ViewService
- CVE-2025-66513 Nextcloud Tables app share information not limited to relevant users
Sources
Also known as GHSA-x43f-gmgh-vvjj.