EUVD-2026-76695Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Planting the payload requires an authenticated workspace member (PR:L); victim must visit the link (UI:R); executing XSS gives full C:H/I:H impact on victim's browser session (S:C).
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
2DescriptionCVE.org
Dobase is an open-source, self-hosted workspace with installable tools. Versions prior to 2026.06.03 have a one-click stored DOM-based cross-site scripting (XSS) vulnerability in the public, unauthenticated shared-folder image gallery. A file's name is fully attacker-controlled and is never sanitized. It is round-tripped through an ERB-escaped data-name attribute, decoded back to its raw value by el.dataset.name, and then re-injected into innerHTML by the public-gallery Stimulus controller with no escaping. Any authenticated workspace member who can share a Files folder can store a payload; the victim is anyone with the public share link (no authentication required). The global Content-Security-Policy is sent report-only (not enforcing), so an inline onerror handler executes - this is an executing XSS, not a CSP-mitigated injection. Version 2026.06.03 fixes the issue.
AnalysisAI
Stored DOM-based XSS in Dobase prior to 2026.06.03 allows any authenticated workspace member to persist an executable JavaScript payload in the public, unauthenticated shared-folder image gallery by crafting a malicious file name. The public-gallery Stimulus controller reads the filename from a data-name HTML attribute via el.dataset.name (which HTML-decodes it) and injects the raw value into innerHTML without sanitization, converting a server-side ERB-escaped attribute back into an executable sink. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must be an authenticated Dobase workspace member with permission to upload files to a shared Files folder and enable public sharing on that folder - a PR:L precondition. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 6.4 with SC:H/SI:H captures high impact to the victim's browser session (subsequent system) while correctly assigning no impact to the Dobase server itself (VC:N/VI:N/VA:N). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to Dobase version 2026.06.03 or later, which resolves the innerHTML injection in the public-gallery Stimulus controller as described in the GitHub Security Advisory GHSA-m95v-4xq6-grhg (https://github.com/smgdkngt/dobase/security/advisories/GHSA-m95v-4xq6-grhg). … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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