CVE-2026-33953 json
LinkAce's SSRF protection can be bypassed via internal hostname resolution in LinkAce
published 2026-03-27 7 mo ago modified 2026-10-26 13 d ago also EUVD-2026-16868
- cvss
- 8.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 20%
- public exploits
- 0
- none known
Summary
LinkAce is a self-hosted archive to collect website links. Versions prior to 2.5.3 block direct requests to private IP literals, but still performs server-side requests to internal-only resources when those resources are referenced through an internal hostname. This allows an authenticated user to trigger server-side requests to internal services reachable by the LinkAce server but not directly reachable by an external user. Version 2.5.3 patches the issue.
Patch / fix
- linkace linkace 2.5.3
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/Kovah/LinkAce/security/advisories/GHSA-wp4g-qw9j-wfjg referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N |
Affected products
- Kovah LinkAce
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/Kovah/LinkAce/security/advisories/GHSA-wp4g-qw9j-wfjg
exploit, vendor-advisory
Sources
- CVE List CVE-2026-33953
- NVD CVE-2026-33953
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.