CVE-2026-27895Network attack vector

Authenticated arbitrary file upload via multiline regex

Published Mar 17, 2026 · Updated Mar 18, 2026

Incorrect regular expression in LDAP Account Manager before 9.5 allows remote authenticated users to upload arbitrary files via PDF export. The PDF logo validator uses a multiline end anchor that accepts a permitted .png or .jpg suffix before a newline while retaining the full filename for storage. Access requires an LDAP login or the master configuration password; paired with the separate PDF local-file-inclusion flaw, an uploaded PHP file executes as the web server user.

CVSS severity4.3
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect regular expression in LDAP Account Manager before 9.5 allows remote authenticated users to upload arbitrary files via PDF export. The PDF logo validator uses a multiline end anchor that accepts a permitted .png or .jpg suffix before a newline while retaining the full filename for storage. Access requires an LDAP login or the master configuration password; paired with the separate PDF local-file-inclusion flaw, an uploaded PHP file executes as the web server user.

The record

CVE
CVE-2026-27895
Published
Mar 17, 2026
Updated
Mar 18, 2026
Vendor
LDAP Account Manager
Product
LDAP Account Manager
Classifications
CWE-185, T1105
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 18, 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=< 9.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

LDAP Account Manager · LDAP Account Managerversion=< 9.5

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.3GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-185Incorrect Regular Expression
T1105Ingress Tool Transfer

Public exploit references

No public exploit references are available in this record.

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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