How severe is CVE-2026-32110?

CVE-2026-32110 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2026-32110 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-32110?

CVE-2026-32110 affects B3log Siyuan. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-32110?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-32110 have an EU (EUVD) identifier?

Yes. CVE-2026-32110 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11381.

When was CVE-2026-32110 published?

CVE-2026-32110 was published on 2026-03-11 and last updated on 2026-06-17.

CVE-2026-32110

CVE-2026-32110 is a high-severity vulnerability in B3log Siyuan with a CVSS 3.x base score of 8.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11381
Weakness: CWE-918
Affected product: B3log Siyuan
Published: 2026-03-11
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-32110?: 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.
How severe is CVE-2026-32110?: CVE-2026-32110 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2026-32110 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-32110?: CVE-2026-32110 affects B3log Siyuan. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-32110?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-32110 have an EU (EUVD) identifier?: Yes. CVE-2026-32110 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11381.
When was CVE-2026-32110 published?: CVE-2026-32110 was published on 2026-03-11 and last updated on 2026-06-17.

References

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-56cv-c5p2-j2wg

Affected products (1)

cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:*

More vulnerabilities in B3log Siyuan

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