Affected versions: < 2.4.3.4
Full advisory: our disclosure post
CVE-2026-102424HighCVSS 8.9Published 29 September 2026
Balbooa Forms (com_baforms) below 2.4.3.4 - Unauthenticated PHP Code Injection (RCE), Local File Disclosure via Auto-Reply Attachments, Stored XSS and Attachment Deletion
Balbooa Forms before 2.4.3.4 (every release from 1.0.0 to 2.4.3.3, per the Joomla CNA) has five flaws, all reachable by an anonymous visitor through a public form. CVE-2026-102425 (CVSS 4.0 9.5): the optional post-submission PHP action replaces field shortcodes with the raw submitted value before eval(), so a form that uses a PHP action with a visitor-supplied shortcode inside a double-quoted string allows remote code execution. CVE-2026-102424 (8.9): on a form with auto-reply and attach-uploaded-files enabled, a guest can submit a traversal filename such as ../../../../configuration.php and receive any file readable by the site in the auto-reply email. CVE-2026-101127 (8.6): the original upload filename is stored verbatim and rendered into the administrator submission view, giving stored XSS against administrators. CVE-2026-101112 (6.9): removeTmpAttachment deletes any attachment by ID without binding it to the uploader session. CVE-2026-101126 (6.9): final submission trusts client-supplied attachment filenames and display names, allowing cross-session claiming and tampering. Reported by Sergiy Tryzhychynskyi and Lukasz Rybak, coordinated by the Joomla Security Strike Team. Update Balbooa Forms to 2.4.3.4 or later and confirm the component reports 2.4.3.4. If a form sent attachments in auto-replies, rotate the database password in configuration.php. Versions below 2.4.3.2 are also affected by the earlier CVSS 10.0 Balbooa Forms advisories.
Affected versions: < 2.4.3.4
Official record: cve.org · NVD
Every connected Joomla site is checked against this rule on each audit, and flagged if it runs an affected version.
How CVE-2026-102424 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.
8.9 High
CVSS 4.0, scored by Joomla CNACVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/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:P Attack requirements
- Present. Needs a particular deployment or race to line up
- 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:N Integrity
- None. Nothing can be altered
- VA:N Availability
- None. The site stays up
What it does beyond the site
- SC:H Confidentiality
- High. Data on other systems can be read
- SI:N Integrity
- None. Other systems keep their integrity
- SA:N Availability
- None. Other systems stay up
The rule below is rated Critical for the set of 5 CVEs it covers together, not for this record on its own.
Affected extensions and versions
Our disclosure post
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Rules current as of 2 October 2026.