CVE-2026-58423

HIGHPre-NVD 7.77.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 57% 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
Elevated
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.7Exploit: Elevated riskExposed: 0

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

LFS authentication bypass via malformed SSH sub-verb allows unauthorized read access to private repositories

CVSS v3
7.7
EG Score
7.7(medium)
EG Risk
51(Track)
EG Risk 51/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity77% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

July 3, 2026

Last Modified

July 6, 2026

Advisory Details (4)

Auto-updated Jul 3, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_pr, github_release.
github Patch Available🟡 PoC Available

LFS authentication bypass via malformed SSH sub-verb allows unauthorized read access to private repositories · Advisory · go-gitea/gitea · GitHub

https://github.com/go-gitea/gitea/security/advisories/GHSA-7wvc-rvp7-w99x
github_release Patch Available

v1.26.4

Patch available: go-gitea/gitea v1.26.4

https://github.com/go-gitea/gitea/releases/tag/v1.26.4
github_pr

fix(lfs): reject unknown SSH LFS sub-verbs to prevent auth bypass

Fix merged in go-gitea/gitea PR #38008 on 2026-06-06 — awaiting tagged release

https://github.com/go-gitea/gitea/pull/38008
generic

Gitea 1.26.3 and 1.26.4 are released | Gitea Blog

https://blog.gitea.com/release-of-1.26.3-and-1.26.4/

Vendor Advisories for CVE-2026-58423(1)

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

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
code.gitea.io/gitea—1.26.3—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 53× 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.

Showing the most recent 100 of 105 total refreshes for this CVE.

  1. 2026-08-30 11:18 UTCEG score recompute
  2. 2026-08-30 01:22 UTCEPSS rescore
  3. 2026-08-28 21:42 UTCEPSS rescore
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  1. 2026-08-16 02:14 UTCEPSS rescore
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  75. 2026-07-06 02:23 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-58423?
CVE-2026-58423 is a high vulnerability published on July 3, 2026. LFS authentication bypass via malformed SSH sub-verb allows unauthorized read access to private repositories
When was CVE-2026-58423 disclosed?
CVE-2026-58423 was first published in the National Vulnerability Database on July 3, 2026, with the most recent update on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58423 actively exploited?
CVE-2026-58423 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.1% of all scored CVEs.
What is the CVSS score of CVE-2026-58423?
CVE-2026-58423 has a CVSS v3 base score of 7.7 (NVD).
How do I remediate CVE-2026-58423?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58423, 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.

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