CVE-2026-33953: LinkAce is a self-hosted archive to collect website links

Q: How do I fix CVE-2026-33953?

linkace: upgrade to 2.5.3. Exact commands for each OS are on this page.

Q: Is CVE-2026-33953 being exploited?

CVE-2026-33953 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-33953 affect?

CVE-2026-33953 affects linkace. Severity is high (CVSS 8.5). 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

Q: How urgent is CVE-2026-33953?

Priority 40/100. High severity; Public exploit reference

This month

HIGH 8.5UPGRADE

CVE-2026-33953 is a high-severity flaw (CVSS 8.5) affecting linkace. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-918
Published	2026-03-27
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: linkace

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-27 22:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

linkace linkace UPGRADE

Affected: < 2.5.3

Fixed in: 2.5.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy linkace || rpm -q linkace || linkace --version

2. UPGRADE to 2.5.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade linkace

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade linkace

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-33953?

linkace: upgrade to 2.5.3. Exact commands for each OS are on this page.

Is CVE-2026-33953 being exploited?

CVE-2026-33953 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-33953 affect?

CVE-2026-33953 affects linkace. Severity is high (CVSS 8.5). 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

How urgent is CVE-2026-33953?

Priority 40/100. High severity; Public exploit reference

Related CVEs

CVE-2026-33954 MEDIUM 6.5 UPGRADE LinkAce is a self-hosted archive to collect website links
CVE-2026-35516 MEDIUM 5.0 UPGRADE LinkAce is a self-hosted archive to collect website links

References

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