CVE-2026-40163 | Saltcorn has an Unauthenticated Path Traversal in sync endpoints allows arbitrary file write and directory read

Exp

Saltcorn is an extensible, open source, no-code database application builder. Prior to 1.4.5, 1.5.5, and 1.6.0-beta.4, the POST /sync/offline_changes endpoint allows an unauthenticated attacker to create arbitrary directories and write a changes.json file with attacker-controlled JSON content anywhere on the server filesystem. The GET /sync/upload_finished endpoint allows an unauthenticated attacker to list arbitrary directory contents and read specific JSON files. This vulnerability is fixed in 1.4.5, 1.5.5, and 1.6.0-beta.4.

Published: 2026-04-10 Last update: 2026-04-27 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-40163 is rated Exploit Available (56.7/100): CVSS High severity, with low exploitation likelihood (EPSS 0.33%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2026-40163

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2026-40163

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.18% 0.33% +0.15%
2 2026-05-22 0.08% 0.18% +0.10%
3 2026-04-11 — 0.08% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-40163

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.2 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 4.2 [email protected]

Weakness enumeration for CVE-2026-40163

GitHub Security Advisory for CVE-2026-40163

GHSA-32pv-mpqg-h292 · Severity: high · Ecosystem: npm — Saltcorn has an Unauthenticated Path Traversal in sync endpoints, allowing arbitrary file write and directory read

Affected software / configurations for CVE-2026-40163

Vendor Product Version Raw CPE
saltcorn saltcorn < 1.4.5 cpe:2.3:a:saltcorn:saltcorn:*:*:*:*:*:*:*:*
saltcorn saltcorn >= 1.5.0, < 1.5.5 cpe:2.3:a:saltcorn:saltcorn:*:*:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha0:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha1:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha10:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha11:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha12:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha13:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha14:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha15:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha16:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha17:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha2:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha3:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha4:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha5:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha6:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha7:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha8:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:alpha9:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:beta1:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:beta2:*:*:*:*:*:*
saltcorn saltcorn 1.6.0 cpe:2.3:a:saltcorn:saltcorn:1.6.0:beta3:*:*:*:*:*:*

References for CVE-2026-40163

cvelogic Threat Intelligence