CVE-2026-27779

highpriority · track · 0EPSS 0.006 · 48 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.58% (48th) EPSS

CVSS 7.5 · high

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-26

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

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondaryexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-284USCWE-284US

affected products (4)

Products and version ranges known to be affected.

Open Source Gitea <1.25.5all versionscert_bundDE
Open Source Gitea< 1.25.5cert_bundDE
Gitea Gitea Open Source Git Server0 → 1.25.5enisa_euvdEU
Go code.gitea.io/gitea< 1.25.5osvUSpkg:golang/code.gitea.io/gitea

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0737Gitea: Mehrere SchwachstellenDeutsch2026-03-16csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Gitea ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Daten zu manipulieren, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand auszulösen oder andere, nicht näher spezifizierte Angriffe durchzuführen.
GHSA-v8f2-2ghq-9whvGitea forwarded-proto validation allows canonical URL spoofing2026-07-03ghsa · osvUS
Gitea versions before 1.25.5 accept malformed or injected forwarded-proto values when detecting public URLs, allowing spoofed canonical URL generation.
GO-2026-6345Gitea forwarded-proto validation allows canonical URL spoofing in code.gitea.io/gitea2026-09-10vendor · osvUS
Gitea forwarded-proto validation allows canonical URL spoofing in code.gitea.io/gitea

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv cert_bund NVD CVE.org MITRE

published 2026-07-03modified 2026-10-25

references (13)

External citations — patches, advisories, analysis.

scry

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