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CVE-2026-32110

B3log Siyuan server-side request forgery (SSRF)

8.3 HIGHPublic exploitEPSS 0.40%
  1. Published11 Mar 2026

Description

SiYuan is a personal knowledge management system. Prior to 3.6.0, the /api/network/forwardProxy endpoint allows authenticated users to make arbitrary HTTP requests from the server. The endpoint accepts a user-controlled URL and makes HTTP requests to it, returning the full response body and headers. There is no URL validation to prevent requests to internal networks, localhost, or cloud metadata services. This vulnerability is fixed in 3.6.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

Affected products

B3log Siyuan< 3.6.0

Remediation

Fixed in
B3log Siyuan≥ 3.6.0

References

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Frequently asked

Is CVE-2026-32110 being actively exploited?

CVE-2026-32110 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.40%.

How severe is CVE-2026-32110?

CVE-2026-32110 has a CVSS 3.1 base score of 8.3, rated high. EPSS estimates a 0.40% probability of exploitation.

Which products are affected by CVE-2026-32110?

Affected products include B3log Siyuan.

How do I fix CVE-2026-32110?

Upgrade affected software to a fixed version, for example B3log Siyuan 3.6.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-32110 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.