CVE-2026-48026

HIGHPre-NVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 88% 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
8.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.7Exploit: None knownExposed: 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 version 1.81.1 of the open source edition and 1.84.0 of the enterprise edition, lakeFS Web UI renders markdown files from repository objects without sanitizing the resulting HTML. A user with write access to any repository branch can commit a .md object containing arbitrary HTML/JavaScript. Any other user who opens that object, or who navigates to a repository or directory containing a malicious README.md, executes the attacker-supplied script in their own authenticated session. lakeFS fixes the issue in v1.81.1 and lakeFS Enterprise fixes the issue in in v1.84.0. Enterprise customers using older versions can temporarily disable Markdown rendering by adding YAML to their config. No workaround exists for OSS release. Users are advised to upgrade to the latest version for both lakeFS and lakeFS-Enterprise.

CVSS v3
8.7
EG Score
8.7(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity87% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

August 7, 2026

Last Modified

August 12, 2026

Advisory Details (2)

Auto-updated Aug 7, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

lakeFS/webui/src/pages/repositories/repository/fileRenderers/useMarkdownProcessor.tsx at 77539527e987fb05c27e3e74c59c0a46a05c47a0 · treeverse/lakeFS · GitHub

https://github.com/treeverse/lakeFS/blob/77539527e987fb05c27e3e74c59c0a46a05c47a0/webui/src/pages/repositories/repository/fileRenderers/useMarkdownProcessor.tsx
github Patch Available🟡 PoC Available

stored XSS in rendered markdown previews via raw HTML · Advisory · treeverse/lakeFS · GitHub

Affected: v1.81.1.

https://github.com/treeverse/lakeFS/security/advisories/GHSA-c2r5-5j4w-2xff

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 45× 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. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 10:20 UTCEG score recompute
  3. 2026-08-28 21:41 UTCEPSS rescore
  4. 2026-08-27 14:27 UTCEG score recompute
  5. 2026-08-27 14:25 UTCEPSS rescore
  6. 2026-08-27 01:57 UTCEG score recompute
  7. 2026-08-26 14:46 UTCEPSS rescore
  8. 2026-08-26 00:54 UTCEG score recompute
  9. 2026-08-25 13:49 UTCEPSS rescore
  10. 2026-08-24 23:52 UTCEG score recompute
  11. 2026-08-24 11:22 UTCEG score recompute
  12. 2026-08-23 10:23 UTCEG score recompute
  13. 2026-08-23 00:19 UTCEPSS rescore
  14. 2026-08-22 09:14 UTCEG score recompute
  15. 2026-08-21 23:49 UTCEPSS rescore
  16. 2026-08-21 08:15 UTCEG score recompute
  17. 2026-08-20 22:55 UTCEPSS rescore
  18. 2026-08-19 18:46 UTCEG score recompute
  19. 2026-08-19 17:04 UTCEPSS rescore
  20. 2026-08-18 17:25 UTCEG score recompute
  21. 2026-08-18 13:48 UTCEPSS rescore
  22. 2026-08-17 15:48 UTCEG score recompute
  23. 2026-08-17 13:47 UTCEPSS rescore
  24. 2026-08-17 03:19 UTCEG score recompute
  25. 2026-08-16 14:56 UTCEPSS rescore
Show 20 more
  1. 2026-08-16 02:19 UTCEG score recompute
  2. 2026-08-16 02:14 UTCEPSS rescore
  3. 2026-08-15 13:50 UTCEG score recompute
  4. 2026-08-15 01:30 UTCEPSS rescore
  5. 2026-08-14 00:21 UTCEG score recompute
  6. 2026-08-13 22:00 UTCEPSS rescore
  7. 2026-08-12 23:22 UTCEG score recompute
  8. 2026-08-12 22:21 UTCEG score recompute
  9. 2026-08-12 16:00 UTCEG score recompute
  10. 2026-08-12 13:51 UTCEPSS rescore
  11. 2026-08-11 15:01 UTCEG score recompute
  12. 2026-08-11 02:32 UTCEG score recompute
  13. 2026-08-11 00:00 UTCEPSS rescore
  14. 2026-08-10 01:32 UTCEG score recompute
  15. 2026-08-09 13:46 UTCEPSS rescore
  16. 2026-08-09 00:34 UTCEG score recompute
  17. 2026-08-08 16:37 UTCEPSS rescore
  18. 2026-08-07 23:34 UTCEG score recompute
  19. 2026-08-07 22:42 UTCEG score recompute
  20. 2026-08-07 22:42 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-48026?
CVE-2026-48026 is a high vulnerability published on August 7, 2026. lakeFS is an open-source tool that transforms object storage into a Git-like repositories. Prior to version 1.81.1 of the open source edition and 1.84.0 of the enterprise edition, lakeFS Web UI renders markdown files from repository objects without sanitizing the resulting HTML. A user with write…
When was CVE-2026-48026 disclosed?
CVE-2026-48026 was first published in the National Vulnerability Database on August 7, 2026, with the most recent update on August 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48026 actively exploited?
CVE-2026-48026 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 87.8% of all scored CVEs.
What is the CVSS score of CVE-2026-48026?
CVE-2026-48026 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-48026?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48026, 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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