How severe is CVE-2026-30953?

CVE-2026-30953 has a CVSS 3.x base score of 7.7, 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 none, and availability none.

Is CVE-2026-30953 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30953?

CVE-2026-30953 affects Linkace. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30953?

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-2026-30953 have an EU (EUVD) identifier?

Yes. CVE-2026-30953 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10874.

When was CVE-2026-30953 published?

CVE-2026-30953 was published on 2026-03-10 and last updated on 2026-06-17.

CVE-2026-30953

CVE-2026-30953 is a high-severity vulnerability in Linkace with a CVSS 3.x base score of 7.7. 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 7.7)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10874
Weakness: CWE-918
Affected product: Linkace
Published: 2026-03-10
Last modified: 2026-06-17

Description

LinkAce is a self-hosted archive to collect website links. When a user creates a link via POST /links, the server fetches HTML metadata from the provided URL (LinkRepository::create() calls HtmlMeta::getFromUrl()). The LinkStoreRequest validation rules do not include NoPrivateIpRule, allowing server-side requests to internal network addresses, Docker service hostnames, and cloud metadata endpoints. The project already has a NoPrivateIpRule class (app/Rules/NoPrivateIpRule.php) but it is only applied in FetchController.php (line 99), not in the primary link creation path.

Frequently asked questions

What is CVE-2026-30953?: LinkAce is a self-hosted archive to collect website links. When a user creates a link via POST /links, the server fetches HTML metadata from the provided URL (LinkRepository::create() calls HtmlMeta::getFromUrl()). The LinkStoreRequest validation rules do not include NoPrivateIpRule, allowing server-side requests to internal network addresses, Docker service hostnames, and cloud metadata endpoints. The project already has a NoPrivateIpRule class (app/Rules/NoPrivateIpRule.php) but it is only applied in FetchController.php (line 99), not in the primary link creation path.
How severe is CVE-2026-30953?: CVE-2026-30953 has a CVSS 3.x base score of 7.7, 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 none, and availability none.
Is CVE-2026-30953 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30953?: CVE-2026-30953 affects Linkace. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30953?: 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-2026-30953 have an EU (EUVD) identifier?: Yes. CVE-2026-30953 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10874.
When was CVE-2026-30953 published?: CVE-2026-30953 was published on 2026-03-10 and last updated on 2026-06-17.

References

https://github.com/Kovah/LinkAce/security/advisories/GHSA-f2mp-q78r-7jx7

Affected products (1)

cpe:2.3:a:linkace:linkace:*:*:*:*:*:*:*:*

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