CVE-2026-82402— Gogs: Open Redirect in /redirect endpoint via backslash bypass in `IsSameSite`
Quick assessment
Affected
gogs gogs
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Gogs is an open source self-hosted Git service. Prior to 0.15.0+dev, an unauthenticated attacker can provide a backslash-containing target to the /redirect endpoint, and similar post-action redirect flows are also affected. internal/urlx/urlx.go IsSameSite val
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I. Basic Information for CVE-2026-82402
Vulnerability Information
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Vulnerability Title
Gogs: Open Redirect in /redirect endpoint via backslash bypass in `IsSameSite`
Source: CVE Program / CVE List V5
Vulnerability Description
Gogs is an open source self-hosted Git service. Prior to 0.15.0+dev, an unauthenticated attacker can provide a backslash-containing target to the /redirect endpoint, and similar post-action redirect flows are also affected. internal/urlx/urlx.go IsSameSite validates a normalized form of the target while cmd/gogs/internal/web/web.go getRedirect and other callers use the original value in the Location response. This backslash normalization mismatch lets browsers interpret the Location value as a scheme-relative external URL, allowing links on a trusted Gogs domain to redirect victims to attacker-controlled content for phishing. This vulnerability is fixed in 0.15.0+dev.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-82402
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Patches & Fixes for CVE-2026-82402 (2)
Other References for CVE-2026-82402 (2)
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gogs/CHANGELOG.md at main · gogs/gogs · GitHub x_refsource_MISC
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V. Comments for CVE-2026-82402
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