Vulnerability · Published Feb 6, 2026 · Assigned by VulDB

CVE-2026-1978kalyan02 NanoCMS User Information pagesdata.txt direct request

Medium 5.3

In plain English

A medium-severity security flaw in NanoCMS from kalyan02. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.4%top 62.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was detected in kalyan02 NanoCMS up to 0.4. Affected by this issue is some unknown functionality of the file /data/pagesdata.txt of the component User Information Handler. Performing a manipulation results in direct request. It is possible to initiate the attack remotely. The exploit is now public and may be used. You should change the configuration settings.

Affected products (as reported)

Vendor	Product	Versions
kalyan02	NanoCMS	0.10.20.30.4

Weakness: CWE-425 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:W/RC:C

References

VDB-344500 | kalyan02 NanoCMS User Information pagesdata.txt direct request vdb-entry, technical-description
VDB-344500 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #743260 | SourceCodester NanoCMS V0.4 Sensitive document leak third-party-advisory
https://github.com/kalyan02/NanoCMS/blob/master/data/pagesdata.txt exploit
https://github.com/kalyan02/NanoCMS/ product