CVE-2026-26187

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 68% 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, nvd
Trending — 3 sources updated this week
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: NoneExposed: 0

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

lakeFS is an open-source tool that transforms object storage into a Git-like repositories. Prior to 1.77.0, the local block adapter (pkg/block/local/adapter.go) allows authenticated users to read and write files outside their designated storage boundaries. The verifyRelPath function used strings.HasPrefix() to verify that requested paths fall within the configured storage directory. This check was insufficient because it validated only the path prefix without requiring a path separator, allowing access to sibling directories with similar names. Also, the adapter verified that resolved paths stayed within the adapter's base path, but did not verify that object identifiers stayed within their designated storage namespace. This allowed attackers to use path traversal sequences in the object identifier to access files in other namespaces. Fixed in version v1.77.0.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
31.5%
KEV
Not listed

Published

February 13, 2026

Last Modified

February 18, 2026

Advisory Details (3)

Auto-updated Jun 10, 2026
Patch available. Sources: github_commit, github_release, github.
github Patch Available

Path traversal vulnerabilities in local block adapter allow cross-namespace and sibling directory access · Advisory · treeverse/lakeFS · GitHub

Affected: version v1.77.0.

https://github.com/treeverse/lakeFS/security/advisories/GHSA-699m-4v95-rmpm
github_release Patch Available

v1.77.0

Patch available: treeverse/lakeFS v1.77.0

https://github.com/treeverse/lakeFS/releases/tag/v1.77.0
github_commit

commit cbc106275357 (treeverse/lakeFS)

Fix landed in treeverse/lakeFS commit cbc106275357 — awaiting tagged release

https://github.com/treeverse/lakeFS/commit/cbc106275357302a834280f133265dc39f1384ce

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/treeverse/lakefs—1.77.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 55× 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. 2026-07-23 14:18 UTCEPSS rescore
  2. 2026-07-23 14:18 UTCEPSS rescore
  3. 2026-07-23 03:07 UTCEG score recompute
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  15. 2026-07-17 14:59 UTCOSV refresh
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  1. 2026-07-12 05:46 UTCEPSS rescore
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  3. 2026-07-09 19:10 UTCEPSS rescore
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  6. 2026-07-07 13:46 UTCEPSS rescore
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  18. 2026-06-29 14:06 UTCEPSS rescore
  19. 2026-06-29 13:02 UTCOSV refresh
  20. 2026-06-28 14:07 UTCEPSS rescore
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  22. 2026-06-28 04:56 UTCEPSS rescore
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  69. 2026-05-31 22:30 UTCEPSS rescore
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  71. 2026-05-29 13:55 UTCEG score recompute
  72. 2026-05-29 13:44 UTCEPSS rescore
  73. 2026-05-29 13:44 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-26187?
CVE-2026-26187 is a high vulnerability published on February 13, 2026. lakeFS is an open-source tool that transforms object storage into a Git-like repositories. Prior to 1.77.0, the local block adapter (pkg/block/local/adapter.go) allows authenticated users to read and write files outside their designated storage boundaries. The verifyRelPath function used…
When was CVE-2026-26187 disclosed?
CVE-2026-26187 was first published in the National Vulnerability Database on February 13, 2026, with the most recent update on February 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-26187 actively exploited?
CVE-2026-26187 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 31.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-26187?
CVE-2026-26187 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-26187?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-26187, 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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