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NVD Vulnerability Details :
CVE-2026-26247
Received
More InfoOfficial Page
Source-88ee5874-cf24-4952-aea0-31affedb7ff2
View Known Exploited Vulnerability (KEV) details
Published At-03 Jul, 2026 | 21:16
Updated At-03 Jul, 2026 | 21:16

Gitea versions before 1.25.5 do not persist the OAuth2 PKCE S256 challenge method correctly during authorization, allowing token exchange without the expected verifier check.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-284Secondary88ee5874-cf24-4952-aea0-31affedb7ff2
CWE ID: CWE-284
Type: Secondary
Source: 88ee5874-cf24-4952-aea0-31affedb7ff2
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://blog.gitea.com/release-of-1.25.5/88ee5874-cf24-4952-aea0-31affedb7ff2
N/A
https://github.com/go-gitea/gitea/pull/3646288ee5874-cf24-4952-aea0-31affedb7ff2
N/A
https://github.com/go-gitea/gitea/pull/3647788ee5874-cf24-4952-aea0-31affedb7ff2
N/A
https://github.com/go-gitea/gitea/releases/tag/v1.25.588ee5874-cf24-4952-aea0-31affedb7ff2
N/A
Hyperlink: https://blog.gitea.com/release-of-1.25.5/
Source: 88ee5874-cf24-4952-aea0-31affedb7ff2
Resource: N/A
Hyperlink: https://github.com/go-gitea/gitea/pull/36462
Source: 88ee5874-cf24-4952-aea0-31affedb7ff2
Resource: N/A
Hyperlink: https://github.com/go-gitea/gitea/pull/36477
Source: 88ee5874-cf24-4952-aea0-31affedb7ff2
Resource: N/A
Hyperlink: https://github.com/go-gitea/gitea/releases/tag/v1.25.5
Source: 88ee5874-cf24-4952-aea0-31affedb7ff2
Resource: N/A
Change History
0Changes found
Details not found