CVE-2026-48026Public exploitNetwork attack vectorHinoki check available

Stored XSS via unsanitized Markdown rendering

Published Aug 7, 2026 · Updated Aug 7, 2026

Stored XSS in Treeverse lakeFS before 1.81.1 and lakeFS Enterprise before 1.84.0 allows remote authenticated users to execute JavaScript. The Web UI Markdown processor permits raw HTML from repository objects and inserts the rendered result into the DOM without sanitization. Repository write access is required to plant a malicious .md or README.md object, and another authenticated user must open or browse to it.

CVSS severity8.7
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored XSS in Treeverse lakeFS before 1.81.1 and lakeFS Enterprise before 1.84.0 allows remote authenticated users to execute JavaScript. The Web UI Markdown processor permits raw HTML from repository objects and inserts the rendered result into the DOM without sanitization. Repository write access is required to plant a malicious .md or README.md object, and another authenticated user must open or browse to it.

The record

CVE
CVE-2026-48026
Published
Aug 7, 2026
Updated
Aug 7, 2026
Vendor
Treeverse
Product
lakeFS Enterprise
Classifications
T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.84.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Treeverse · lakeFS Enterpriseversion=< 1.84.0
Treeverse · lakeFSversion=< 1.81.1

Published CVSS scores

8.7GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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