CVE-2026-27779

Gitea forwarded-proto handling allows public URL spoofing

At a glance

Severity: HIGH 7.5
EPSS: EPSS 0.58 % · percentile 48 (2026-10-28)
State: PUBLISHED
Published: 2026-07-03
Updated: 2026-07-06
Assigner: Gitea
NVD status: Deferred

Description

Gitea versions before 1.25.5 accept malformed or injected forwarded-proto values when detecting public URLs, allowing spoofed canonical URL generation.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CISA-ADP
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Weaknesses (CWE)

CWE-284

Advisories

GHSA-v8f2-2ghq-9whv — Gitea forwarded-proto validation allows canonical URL spoofing
GO-2026-6345 — Gitea forwarded-proto validation allows canonical URL spoofing in code.gitea.io/gitea

European references

ENISA EUVD · EUVD-2026-41637
GCVE · GCVE-0-2026-27779

Affected products

Product	Versions
Gitea · Gitea Open Source Git Server	affected 0 < 1.25.5

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD