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CVE-2026-96400: With `[migrations] ALLOWED_DOMAINS` set to a matching entry such as `*` or a hostname wildcard, Gitea's migrat

17
Routine
MEDIUM 4.3UPGRADE

CVE-2026-96400 is a medium-severity flaw (CVSS 4.3) affecting gitea. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

With `[migrations] ALLOWED_DOMAINS` set to a matching entry such as `*` or a hostname wildcard, Gitea's migration URL validation could permit reserved and link-local addresses, such as `169.254.169.254`, even when `ALLOW_LOCALNETWORKS = false`. The local-network block list did not cover these ranges, and a hostname matching the allow list was accepted regardless of its resolved address. A user who can start migrations on such an instance could re

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score4.3 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.2% (top 90%)
CISA exploited listNo
WeaknessCWE-918
Published2026-10-06
Last modified2026-10-13
Publisher (CNA): Gitea Limited · Vendor: gitea

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Last updated 2026-10-13 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

gitea gitea UPGRADE
Affected: < 28.0.0
Fixed in: 28.0.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy gitea || rpm -q gitea || gitea --version
2. UPGRADE to 28.0.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade gitea
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade gitea
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-2026-96400?

gitea: upgrade to 28.0.0. Exact commands for each OS are on this page.

Is CVE-2026-96400 being exploited?

CVE-2026-96400 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-2026-96400 affect?

CVE-2026-96400 affects gitea. Severity is medium (CVSS 4.3). With `[migrations] ALLOWED_DOMAINS` set to a matching entry such as `*` or a hostname wildcard, Gitea's migration URL validation could permit reserved and link-local addresses, such as `169.254.169.254`, even when `ALLOW_LOCALNETWORKS = fal

How urgent is CVE-2026-96400?

Priority 17/100. No elevated risk signals yet.

Software pages

Gitea vulnerabilities

Related CVEs

References

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