CVE-2026-1978Public exploitNetwork attack vector

Unauthenticated credential hash disclosure via exposed data file

Published Feb 6, 2026 · Updated Feb 6, 2026

Forced browsing in kalyan02 NanoCMS 0.1 through 0.4 allows remote attackers to read administrator credentials from pagesdata.txt. NanoCMS stores serialized settings, including the administrator username and password hash, in the web-accessible /data/pagesdata.txt file without access control. No authentication or user interaction is required; disclosure is limited to stored site settings and the reusable administrator password hash.

CVSS severity5.3
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Forced browsing in kalyan02 NanoCMS 0.1 through 0.4 allows remote attackers to read administrator credentials from pagesdata.txt. NanoCMS stores serialized settings, including the administrator username and password hash, in the web-accessible /data/pagesdata.txt file without access control. No authentication or user interaction is required; disclosure is limited to stored site settings and the reusable administrator password hash.

The record

CVE
CVE-2026-1978
Published
Feb 6, 2026
Updated
Feb 6, 2026
Vendor
kalyan02
Product
NanoCMS
Classifications
CWE-425, T1552.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 6, 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=0.1
  2. Affected versionversion=0.2
  3. Affected versionversion=0.3
  4. Affected versionversion=0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

kalyan02 · NanoCMSversion=0.1; version=0.2; version=0.3; version=0.4

Published CVSS scores

5.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.0VulDBAV:N/AC:L/Au:N/C:P/I:N/A:N
5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-425Direct Request ('Forced Browsing')
T1552.001Unsecured Credentials: Credentials In Files

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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