CVE-2026-58314Public exploitNetwork attack vectorHinoki check available

Internal data disclosure via incomplete outbound request filtering

Published Aug 13, 2026 · Updated Aug 13, 2026

Server-side request forgery in Gitea 1.26.4 and earlier allows remote attackers to access internal services via crafted outbound request URLs. The host matcher treats CGNAT and several IPv6 transition ranges as external, while OpenID discovery sends user-controlled URLs through an unfiltered default HTTP client. Logged-in users can retrieve webhook responses from reachable CGNAT services; when OpenID sign-in is enabled, unauthenticated requests provide blind internal GET and timing access.

CVSS severity7.7
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Server-side request forgery in Gitea 1.26.4 and earlier allows remote attackers to access internal services via crafted outbound request URLs. The host matcher treats CGNAT and several IPv6 transition ranges as external, while OpenID discovery sends user-controlled URLs through an unfiltered default HTTP client. Logged-in users can retrieve webhook responses from reachable CGNAT services; when OpenID sign-in is enabled, unauthenticated requests provide blind internal GET and timing access.

The record

CVE
CVE-2026-58314
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
Gitea
Product
Gitea
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.26.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Gitea · Giteaversion=0 <=1.26.4

Published CVSS scores

7.7GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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