CVE-2025-68948: siyuan Hardcoded Credentials

Description

SiYuan is self-hosted, open source personal knowledge management software. In versions 3.5.1 and prior, the SiYuan Note application utilizes a hardcoded cryptographic secret for its session store. This unsafe practice renders the session encryption ineffective. Since the sensitive AccessAuthCode is stored within the session cookie, an attacker who intercepts or obtains a user's encrypted session cookie (e.g., via session hijacking) can locally decrypt it using the public key. Once decrypted, the attacker can retrieve the AccessAuthCode in plain text and use it to authenticate or take over the session.

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CVSS v3.1 Score

8.1

HIGH

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

Weakness Type (CWE)

CWE-321 CWE-321

CWE-798 CWE-798

Affected Products

Vendor	Product	Versions
b3log	siyuan	< 3.5.2

References

Advisories & Patches

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-f7ph-rc3w-qp28 https://github.com/siyuan-note/siyuan/security/advisories/GHSA-f7ph-rc3w-qp28

Exploits

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-f7ph-rc3w-qp28 https://github.com/siyuan-note/siyuan/security/advisories/GHSA-f7ph-rc3w-qp28

Frequently Asked Questions

What is CVE-2025-68948? +

SiYuan is self-hosted, open source personal knowledge management software. In versions 3.5.1 and prior, the SiYuan Note application utilizes a hardcoded cryptographic secret for its session store. This unsafe practice renders the session encryption ineffective. Since the sensitive AccessAuthCode is stored within the session cookie, an attacker who intercepts or obtains a user's encrypted session cookie (e.g., via session hijacking) can locally decrypt it using the public key. Once decrypted, the attacker can retrieve the AccessAuthCode in plain text and use it to authenticate or take over the session. It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2025-68948? +

CVE-2025-68948 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-68948? +

CVE-2025-68948 affects products from b3log, specifically: siyuan. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-68948? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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