Affected versions: < 6.4.6
Full advisory: our disclosure post
CVE-2026-101110CriticalCVSS 9.3CVE published 28 September 2026Added to mySites.guru 28 September 2026
Book Library (com_booklibrary) below 6.4.6 - Unauthenticated SQL Injection
Book Library by OrdaSoft before 6.4.6 passes the field and direction request parameters of its public book listing through protectInjectionWithoutQuote(), a keyword blacklist that quotes rather than rejects a suspicious value, and then concatenates the result into an unquoted ORDER BY clause where quoting gives no protection. No login is needed. CVE-2026-101110, CVSS 4.0 9.3 Critical. The CVE record names the Free edition; the Pro and ShopPro editions share the element and version numbering. The record title gives the fix as 6.4.6 while its affected range runs to 6.4.6; update to the newest release OrdaSoft offers. If you cannot update, disable the component until you can.
Is my site affected?
- Affected
- Book Library before 6.4.6
- Fixed in
- 6.4.6
- What to do
- Update Book Library to 6.4.6 or later.
How CVE-2026-101110 is scored
The base metrics as Joomla CNA published them, and what each one means for a site running an affected version. Threat and environmental metrics are left out: they describe a moment or a particular install rather than the flaw.
9.3 Critical
CVSS 4.0, scored by Joomla CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NHow it is reached
- AV:N Attack vector
- Network. Reachable across the internet
- AC:L Attack complexity
- Low. Nothing to work around, it just works
- AT:N Attack requirements
- None. Works against any affected install
- PR:N Privileges required
- None. No account needed
- UI:N User interaction
- None. Nobody has to be tricked into anything
What it does to the site
- VC:H Confidentiality
- High. Everything the site holds can be read
- VI:H Integrity
- High. Data and files can be altered at will
- VA:H Availability
- High. The site can be taken down
What it does beyond the site
- SC:N Confidentiality
- None. Other systems keep their data
- SI:N Integrity
- None. Other systems keep their integrity
- SA:N Availability
- None. Other systems stay up
Timeline
- 28 September 2026CVE-2026-101110 record published by its CNA
- 28 September 2026mySites.guru check added for Book Library (before 6.4.6)
- 28 September 2026We published: Three OrdaSoft Joomla Extensions Have Unauthenticated SQL Injections in Their Sort Order
Rule details
Our disclosure post
Other vulnerabilities in Book Library
Updating for CVE-2026-101110 alone can leave a site on a release another rule still matches. These are the other flaws we check for in the same extension.
References
- CVE-2026-101110 on cve.org (the official CVE record)
- CVE-2026-101110 in the NIST National Vulnerability Database
- Three OrdaSoft Joomla Extensions Have Unauthenticated SQL Injections in Their Sort Order
CVE-2026-101110 questions
Which versions are affected by CVE-2026-101110?
CVE-2026-101110 affects Book Library before 6.4.6. The fix is in 6.4.6.
How do I fix CVE-2026-101110?
Update Book Library to 6.4.6 or later. Then confirm the installed version on the Joomla administrator's Extensions: Manage screen.
How severe is CVE-2026-101110?
Joomla CNA scores it 9.3 (Critical) under CVSS 4.0. In plain terms: reachable across the internet, no account needed and nobody has to be tricked into anything.
Running an affected version on a site you manage?
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This check is part of the mySites.guru Joomla vulnerability scanner, which reads every installed extension's version on each audit. Browse the rest of the Joomla vulnerability database.
Rules current as of 20 October 2026.