How severe is CVE-2026-32749?

CVE-2026-32749 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.

Is CVE-2026-32749 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-32749?

CVE-2026-32749 affects B3log Siyuan. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-32749?

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-2026-32749 have an EU (EUVD) identifier?

Yes. CVE-2026-32749 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13213.

When was CVE-2026-32749 published?

CVE-2026-32749 was published on 2026-03-19 and last updated on 2026-06-17.

CVE-2026-32749

CVE-2026-32749 is a high-severity vulnerability in B3log Siyuan with a CVSS 3.x base score of 7.6. 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-22.

Key facts

Severity: High (CVSS 3.x base score 7.6)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13213
Weakness: CWE-22
Affected product: B3log Siyuan
Published: 2026-03-19
Last modified: 2026-06-17

Description

SiYuan is a personal knowledge management system. In versions 3.6.0 and below, POST /api/import/importSY and POST /api/import/importZipMd write uploaded archives to a path derived from the multipart filename field without sanitization, allowing an admin to write files to arbitrary locations outside the temp directory - including system paths that enable RCE. This can lead to aata destruction by overwriting workspace or application files, and for Docker containers running as root (common default), this grants full container compromise. This issue has been fixed in version 3.6.1.

Frequently asked questions

What is CVE-2026-32749?: SiYuan is a personal knowledge management system. In versions 3.6.0 and below, POST /api/import/importSY and POST /api/import/importZipMd write uploaded archives to a path derived from the multipart filename field without sanitization, allowing an admin to write files to arbitrary locations outside the temp directory - including system paths that enable RCE. This can lead to aata destruction by overwriting workspace or application files, and for Docker containers running as root (common default), this grants full container compromise. This issue has been fixed in version 3.6.1.
How severe is CVE-2026-32749?: CVE-2026-32749 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.
Is CVE-2026-32749 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-32749?: CVE-2026-32749 affects B3log Siyuan. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-32749?: 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-2026-32749 have an EU (EUVD) identifier?: Yes. CVE-2026-32749 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13213.
When was CVE-2026-32749 published?: CVE-2026-32749 was published on 2026-03-19 and last updated on 2026-06-17.

References

Affected products (1)

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

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