CVE-2026-1811Public exploitNetwork attack vector

Authenticated code execution via unchecked Markdown filename

Published Feb 3, 2026 · Updated Feb 3, 2026

Path traversal in bolo-blog Bolo-Solo 2.6.0 through 2.6.4 allows remote authenticated users to write files via Markdown import filenames. BackupService.importFromMarkdown stores the uploaded file under its supplied filename without validating path components, extensions, or the resolved destination. Low-privileged access to the import endpoint is required; writing a FreeMarker template enables server-side command execution when the template is rendered.

CVSS severity6.3
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in bolo-blog Bolo-Solo 2.6.0 through 2.6.4 allows remote authenticated users to write files via Markdown import filenames. BackupService.importFromMarkdown stores the uploaded file under its supplied filename without validating path components, extensions, or the resolved destination. Low-privileged access to the import endpoint is required; writing a FreeMarker template enables server-side command execution when the template is rendered.

The record

CVE
CVE-2026-1811
Published
Feb 3, 2026
Updated
Feb 3, 2026
Vendor
bolo-blog
Product
Bolo-Solo
Classifications
CWE-22, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 3, 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=2.6.0
  2. Affected versionversion=2.6.1
  3. Affected versionversion=2.6.2
  4. Affected versionversion=2.6.3
  5. Affected versionversion=2.6.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

bolo-blog · Bolo-Soloversion=2.6.0; version=2.6.1; version=2.6.2; version=2.6.3; version=2.6.4

Published CVSS scores

6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

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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