NVD / CVE Program· CNA GitHub_M

CVE-2026-30869: SiYuan has a Path Traversal in /export Endpoint Allows Arbitrary File Read and Secret Leakage

Noroxi assessment

Priority: Monitor (action score 39/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 1.1% (FIRST EPSS); higher than 65.9% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
Fixed version: siyuan-note siyuan 3.5.10.

Low priority for now. Upgrade to siyuan-note siyuan 3.5.10 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

SiYuan is a personal knowledge management system. Prior to 3.5.10, a path traversal vulnerability in the /export endpoint allows an attacker to read arbitrary files from the server filesystem. By exploiting double‑encoded traversal sequences, an attacker can access sensitive files such as conf/conf.json, which contains secrets including the API token, cookie signing key, and workspace access authentication code. Leaking these secrets may enable administrative access to the SiYuan kernel API, and in certain deployment scenarios could potentially be chained into remote code execution (RCE). This vulnerability is fixed in 3.5.10.

CriticalCVSS 9.8 · v3.1—No exploit Fix available

Published: Mar 10, 2026
Updated: Jun 17, 2026
EPSS: 1.1% · 65th percentile
CWE: CWE-22

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 39 / 40 · 9.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 1.1%

CISA SSVC decision

Exploitation: proof of concept
Automatable: yes
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 9.8
CNA · GitHub_M: 9.3; 0.5 point gap

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
b3log	siyuan	cpe:2.3:a:b3log:siyuan

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

b3log siyuanbefore 3.5.10

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

siyuan-note siyuan
- < 3.5.10affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Go	github.com/siyuan-note/siyuan/kernel	from 0	—
Go	github.com/siyuan-note/siyuan/kernel	before 3.5.10	3.5.10

Same product

b3log: all records

Other highest-scoring records for the same primary product.

CVE-2026-32767SiYuan: Authorization Bypass Allows Arbitrary SQL Execution via Search API
39Monitor
CVE-2024-53507A SQL injection vulnerability was discovered in Siyuan 3.1.11 in /getHistoryItems.
39Monitor
CVE-2024-53506A SQL injection vulnerability has been identified in Siyuan 3.1.11 via the ids array parameter in /batchGetBlockAttrs.
39Monitor

Published before and after this one in the same product

← EarlierCVE-2026-29183Mar 6, 2026 · SiYuan: Unauthenticated reflected SVG XSS in `/api/icon/getDynamicIcon` (`type=8`) enables arbitrary JavaScript execution
24Monitor
← EarlierCVE-2026-30926Mar 10, 2026 · SiYuan Note publish service authorization bypass allows low-privilege users to modify notebook content
28Monitor
Later →CVE-2026-31807Mar 10, 2026 · SiYuan has a SVG Sanitizer Bypass via `<animate>` Element — Unauthenticated XSS
25Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
siyuan-note siyuan	3.5.10 · description	Vendor (CNA)
Go:github.com/siyuan-note/siyuan/kernel	3.5.10	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-327499 days apartSiYuan importSY/importZipMd: Path Traversal via multipart filename enables arbitrary file write
36Monitor
CVE-2025-6748891 days apartSiYuan: ZipSlip -> Arbitrary File Overwrite -> RCE
35Monitor
CVE-2024-55657454 days apartSiYuan has an arbitrary file read via /api/template/render
34Monitor
CVE-2024-55658454 days apartSiYuan has an arbitrary file read and path traversal via /api/export/exportResources
34Monitor
CVE-2024-55659454 days apartSiYuan has an arbitrary file write in the host via /api/asset/upload
34Monitor
CVE-2026-2385150 days apartSiYuan Vulnerable to Arbitrary File Read via File Copy Functionality
33Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.

The bug in code

The whole CWE-22 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const file = path.join(ROOT, req.query.name);
2res.sendFile(file);

Fixed

1const file = path.resolve(ROOT, req.query.name);
2if (!file.startsWith(ROOT + path.sep)) {
3  return res.sendStatus(400);
4}
5res.sendFile(file);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

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Change log

Fix✗ → ✓Sep 28, 2026, 10:46 PM UTC

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