How severe is CVE-2026-8786?

CVE-2026-8786 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-8786 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-8786?

CVE-2026-8786 affects Tencent Weknora. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-8786?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-8786 have an EU (EUVD) identifier?

Yes. CVE-2026-8786 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30730.

When was CVE-2026-8786 published?

CVE-2026-8786 was published on 2026-05-18 and last updated on 2026-06-17.

CVE-2026-8786

CVE-2026-8786 is a medium-severity vulnerability in Tencent Weknora with a CVSS 3.x base score of 6.3. 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-285.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 2.1
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30730
Weakness: CWE-285
Affected product: Tencent Weknora
Published: 2026-05-18
Last modified: 2026-06-17

Description

A vulnerability has been found in Tencent WeKnora up to 0.3.6. Affected by this issue is the function getKnowledgeBaseForInitialization of the file internal/handler/initialization.go of the component Config API Endpoint. The manipulation of the argument kbId leads to authorization bypass. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-8786?: A vulnerability has been found in Tencent WeKnora up to 0.3.6. Affected by this issue is the function getKnowledgeBaseForInitialization of the file internal/handler/initialization.go of the component Config API Endpoint. The manipulation of the argument kbId leads to authorization bypass. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-8786?: CVE-2026-8786 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-8786 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-8786?: CVE-2026-8786 affects Tencent Weknora. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-8786?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-8786 have an EU (EUVD) identifier?: Yes. CVE-2026-8786 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30730.
When was CVE-2026-8786 published?: CVE-2026-8786 was published on 2026-05-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:tencent:weknora:*:*:*:*:*:*:*:*

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