CVE-2026-52814

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 58% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 5.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
41.9%
KEV
Not listed

Published

June 23, 2026

Last Modified

June 25, 2026

Advisory Details (4)

Auto-updated Jun 24, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github, github_commit, github_pr.
github Patch Available🟡 PoC Available

Unauthenticated Asymmetric Denial of Service (DoS) via SSH Handshake Stall (File Descriptor Exhaustion) · Advisory · gogs/gogs · GitHub

https://github.com/gogs/gogs/security/advisories/GHSA-xp79-5mx3-jx52
github_release Patch Available

0.14.3

Patch available: gogs/gogs v0.14.3

https://github.com/gogs/gogs/releases/tag/v0.14.3
github_pr

security: time out stalled SSH handshakes after 15s

Fix merged in gogs/gogs PR #8335 on 2026-06-07 — awaiting tagged release

https://github.com/gogs/gogs/pull/8335
github_commit

commit 7da9cda31405 (gogs/gogs)

Fix landed in gogs/gogs commit 7da9cda31405 — awaiting tagged release

https://github.com/gogs/gogs/commit/7da9cda314054501e1a7938a9c4d7896f331b884

Vendor Advisories for CVE-2026-52814(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 15× in last 7d / 30× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 23:55 UTCEG score recompute
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-05 23:44 UTCEG score recompute
  7. 2026-07-05 02:30 UTCEPSS rescore
  8. 2026-07-04 23:35 UTCEG score recompute
  9. 2026-07-04 06:31 UTCEPSS rescore
  10. 2026-07-03 23:26 UTCEG score recompute
  11. 2026-07-02 23:17 UTCEG score recompute
  12. 2026-07-01 23:08 UTCEG score recompute
  13. 2026-07-01 15:07 UTCEPSS rescore
  14. 2026-06-30 23:22 UTCEPSS rescore
  15. 2026-06-30 22:59 UTCEG score recompute
  16. 2026-06-29 22:50 UTCEG score recompute
  17. 2026-06-29 14:06 UTCEPSS rescore
  18. 2026-06-29 14:06 UTCEPSS rescore
  19. 2026-06-28 22:41 UTCEG score recompute
  20. 2026-06-28 14:07 UTCEPSS rescore
  21. 2026-06-28 04:56 UTCEPSS rescore
  22. 2026-06-28 04:56 UTCEPSS rescore
  23. 2026-06-27 22:32 UTCEG score recompute
  24. 2026-06-27 03:08 UTCEPSS rescore
  25. 2026-06-26 22:23 UTCEG score recompute
Show 5 more
  1. 2026-06-25 22:13 UTCEG score recompute
  2. 2026-06-25 13:49 UTCEPSS rescore
  3. 2026-06-24 22:04 UTCEG score recompute▲ 5.50
  4. 2026-06-24 22:03 UTCNVD updateCVSS v3 → 5.5 · CVSS v4 → 5.5
  5. 2026-06-23 17:21 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-52814?
CVE-2026-52814 is a medium vulnerability published on June 23, 2026. 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…
When was CVE-2026-52814 disclosed?
CVE-2026-52814 was first published in the National Vulnerability Database on June 23, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52814 actively exploited?
CVE-2026-52814 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 41.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-52814?
CVE-2026-52814 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-52814?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52814, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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