Vulnerability in gogs.io/gogs (CVE-2026-52814)
Summary
Vulnerability in gogs.io/gogs (CVE-2026-52814). Risk of unauthorized operations or information disclosure. Exploitable via net.Conn. Mitigation: upgrade to 0.14.3 or later.
Original description
The description as published by the source.
Gogs is an open source self-hosted Git service. Prior to 0.14.3, the Gogs built-in Go SSH server is vulnerable to an unauthenticated, asymmetric Denial of Service (DoS) attack. The application accepts inbound TCP connections and passes them to golang.org/x/crypto/ssh.NewServerConn inside a new goroutine without enforcing any read/write deadlines on the underlying net.Conn. An unauthenticated attacker can open multiple TCP connections to the SSH port and simply withhold the SSH protocol banner. This forces the server to spawn an unbounded number of goroutines that block indefinitely waiting for socket I/O. This leads to complete File Descriptor (FD) exhaustion, preventing legitimate users from accessing the Git SSH service, and ultimately destabilizing the entire Gogs process (e.g., causing internal log rotation failures). This vulnerability is fixed in 0.14.3.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-52814 has been found in gogs.io/gogs.
Attackers can target a specific entry point like net.Conn over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade gogs.io/gogs to 0.14.3 or later.
If unsure, ask your IT team or search "gogs.io/gogs CVE-2026-52814" on the vendor's site.
CVE-2026-52814 (gogs.io/gogs) — CWE-400
Attack surface: net.Conn / listen / NewServerConn / io.ReadFull
Patched: 0.14.3 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-400) exists in gogs.io/gogs. Attackers reach the vulnerable code path via net.Conn.
Check the vendor advisory for the affected versions of gogs.io/gogs. Attack surface: net.Conn / listen / NewServerConn / io.ReadFull.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 0.14.3.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'gogs.io/gogs' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'gogs.io/gogs' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
gogs.io/gogsを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade gogs.io/gogs to 0.14.3ステージング環境で 0.14.3 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- package github.com
- patch github.com
- patch github.com
- web github.com
- web github.com