How severe is CVE-2026-30858?

CVE-2026-30858 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-30858 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30858?

CVE-2026-30858 affects Tencent Weknora. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30858?

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

Does CVE-2026-30858 have an EU (EUVD) identifier?

Yes. CVE-2026-30858 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10181.

When was CVE-2026-30858 published?

CVE-2026-30858 was published on 2026-03-07 and last updated on 2026-06-17.

CVE-2026-30858

CVE-2026-30858 is a medium-severity vulnerability in Tencent Weknora with a CVSS 3.x base score of 6.5. 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: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10181
Weakness: CWE-918
Affected product: Tencent Weknora
Published: 2026-03-07
Last modified: 2026-06-17

Description

WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.3.0, a DNS rebinding vulnerability in the web_fetch tool allows an unauthenticated attacker to bypass URL validation and access internal resources on the server, including private IP addresses (e.g., 127.0.0.1, 192.168.x.x). By crafting a malicious domain that resolves to a public IP during validation and subsequently resolves to a private IP during execution, an attacker can access sensitive local services and potentially exfiltrate data. This issue has been patched in version 0.3.0.

Frequently asked questions

What is CVE-2026-30858?: WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.3.0, a DNS rebinding vulnerability in the web_fetch tool allows an unauthenticated attacker to bypass URL validation and access internal resources on the server, including private IP addresses (e.g., 127.0.0.1, 192.168.x.x). By crafting a malicious domain that resolves to a public IP during validation and subsequently resolves to a private IP during execution, an attacker can access sensitive local services and potentially exfiltrate data. This issue has been patched in version 0.3.0.
How severe is CVE-2026-30858?: CVE-2026-30858 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-30858 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30858?: CVE-2026-30858 affects Tencent Weknora. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30858?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-30858 have an EU (EUVD) identifier?: Yes. CVE-2026-30858 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10181.
When was CVE-2026-30858 published?: CVE-2026-30858 was published on 2026-03-07 and last updated on 2026-06-17.

References

https://github.com/Tencent/WeKnora/security/advisories/GHSA-h6gw-8f77-mmmp

Affected products (1)

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

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