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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-101027

Gitea migration SSRF through ALLOWED_DOMAINS address check bypassCVE-2026-101027

Answer in brief

CVE-2026-101027 records a Unknown severity vulnerability in Gitea migration SSRF through ALLOWED_DOMAINS address check bypass. The current sources do not mark it as known exploited. The current feed maps Gitea/Gitea (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 6, 2026Updated Oct 6, 2026Source checked Oct 7, 2026First seen by HOL Oct 6, 2026Material review Oct 6, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Gitea/Gitea (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Gitea/Giteageneric>=0 <=1.27.3Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Gitea/Gitea.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Oct 6, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 6, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 6, 2026

Sources and claim methodology

  • Source referenceblog.gitea.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

When `[migrations] ALLOWED_DOMAINS` was configured, a hostname matching the allow list was accepted without checking its resolved address against the local-network restrictions. A user who can start repository migrations and control the DNS of an allowed hostname could make it resolve to loopback or private addresses and bypass `ALLOW_LOCALNETWORKS = false`, reaching internal services from the Gitea server. Instances without `ALLOWED_DOMAINS` configured are not affected by this specific bypass.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Gitea OAuth2 refresh token grant accepts access tokensSame gitea/gitea package
  • Gitea migration memory exhaustion from zero page sizeSame gitea/gitea package
  • Gitea tag delete route deletes releases without release permissionSame gitea/gitea package
  • Gitea issue attachment API allows changing comment attachmentsSame gitea/gitea package
  • Gitea push mirror local path check uses the repository ownerSame gitea/gitea package
  • Gitea push-to-create bypass of FORCE_PRIVATE policySame gitea/gitea package

Record context

Vulnerability class
SSRF
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 7, 2026
References
4 linked sources
Open source record