CVE-2026-40521 (GCVE-0-2026-40521)
Vulnerability from cvelistv5 – Published: 2026-06-29 12:30 – Updated: 2026-07-14 20:00 X_Open Source
VLAI
EPSS
VEX
Title
FrontAccounting < 2.4.20 Path Traversal RCE via attachment upload
Summary
FrontAccounting before 2.4.20 contains a path traversal vulnerability in the attachment upload handler that allows authenticated attackers to execute arbitrary code by uploading files with traversal sequences in the unique_name parameter. Attackers can supply path traversal sequences ../../../shell.php to write files outside the intended attachments directory into the web root, and by uploading PHP files without extension validation, achieve remote code execution as the web server user.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-30 13:52 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://jivasecurity.com/writeups/frontaccounting… | technical-descriptionexploit |
| https://sourceforge.net/p/frontaccounting/news/20… | release-notes |
| https://github.com/FrontAccountingERP/FA/commit/7… | patch |
| https://www.vulncheck.com/advisories/frontaccount… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| FrontAccounting | FrontAccounting |
Affected:
0 , < 2.4.20
(semver)
Unaffected: 701fea6848da4a02fb83d30f07a9c0473d6b7e33 (git) cpe:2.3:a:frontaccounting:frontaccounting:*:*:*:*:*:*:*:* |
Date Public
2026-04-23 00:00
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