How severe is CVE-2026-33954?

CVE-2026-33954 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-2026-33954 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33954?

CVE-2026-33954 affects Linkace. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33954?

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

Does CVE-2026-33954 have an EU (EUVD) identifier?

Yes. CVE-2026-33954 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16870.

When was CVE-2026-33954 published?

CVE-2026-33954 was published on 2026-03-27 and last updated on 2026-06-17.

CVE-2026-33954

CVE-2026-33954 is a medium-severity vulnerability in Linkace 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-285.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16870
Weakness: CWE-285
Affected product: Linkace
Published: 2026-03-27
Last modified: 2026-06-17

Description

LinkAce is a self-hosted archive to collect website links. In versions prior to 2.5.3, a private note attached to a non-private link can be disclosed to a different authenticated user via the web interface. The API appears to correctly enforce note visibility, but the web link detail page renders notes without applying equivalent visibility filtering. As a result, an authenticated user who is allowed to view another user's `internal` or `public` link can read that user's `private` notes attached to the link. Version 2.5.3 patches the issue.

Frequently asked questions

What is CVE-2026-33954?: LinkAce is a self-hosted archive to collect website links. In versions prior to 2.5.3, a private note attached to a non-private link can be disclosed to a different authenticated user via the web interface. The API appears to correctly enforce note visibility, but the web link detail page renders notes without applying equivalent visibility filtering. As a result, an authenticated user who is allowed to view another user's `internal` or `public` link can read that user's `private` notes attached to the link. Version 2.5.3 patches the issue.
How severe is CVE-2026-33954?: CVE-2026-33954 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-2026-33954 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33954?: CVE-2026-33954 affects Linkace. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33954?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-33954 have an EU (EUVD) identifier?: Yes. CVE-2026-33954 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16870.
When was CVE-2026-33954 published?: CVE-2026-33954 was published on 2026-03-27 and last updated on 2026-06-17.

References

https://github.com/Kovah/LinkAce/security/advisories/GHSA-88h3-cq25-vw8q

Affected products (1)

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

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